Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
diff --git a/Documentation/ioctl-number.txt b/Documentation/ioctl-number.txt
index 769f925..87f4d05 100644
--- a/Documentation/ioctl-number.txt
+++ b/Documentation/ioctl-number.txt
@@ -130,8 +130,6 @@
<mailto:zapman@interlan.net>
'i' 00-3F linux/i2o.h
'j' 00-3F linux/joystick.h
-'k' all asm-sparc/kbio.h
- asm-sparc64/kbio.h
'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
<http://mikonos.dia.unisa.it/tcfs>
'l' 40-7F linux/udf_fs_i.h in development:
diff --git a/Documentation/sharedsubtree.txt b/Documentation/sharedsubtree.txt
new file mode 100644
index 0000000..2d8f403
--- /dev/null
+++ b/Documentation/sharedsubtree.txt
@@ -0,0 +1,1060 @@
+Shared Subtrees
+---------------
+
+Contents:
+ 1) Overview
+ 2) Features
+ 3) smount command
+ 4) Use-case
+ 5) Detailed semantics
+ 6) Quiz
+ 7) FAQ
+ 8) Implementation
+
+
+1) Overview
+-----------
+
+Consider the following situation:
+
+A process wants to clone its own namespace, but still wants to access the CD
+that got mounted recently. Shared subtree semantics provide the necessary
+mechanism to accomplish the above.
+
+It provides the necessary building blocks for features like per-user-namespace
+and versioned filesystem.
+
+2) Features
+-----------
+
+Shared subtree provides four different flavors of mounts; struct vfsmount to be
+precise
+
+ a. shared mount
+ b. slave mount
+ c. private mount
+ d. unbindable mount
+
+
+2a) A shared mount can be replicated to as many mountpoints and all the
+replicas continue to be exactly same.
+
+ Here is an example:
+
+ Lets say /mnt has a mount that is shared.
+ mount --make-shared /mnt
+
+ note: mount command does not yet support the --make-shared flag.
+ I have included a small C program which does the same by executing
+ 'smount /mnt shared'
+
+ #mount --bind /mnt /tmp
+ The above command replicates the mount at /mnt to the mountpoint /tmp
+ and the contents of both the mounts remain identical.
+
+ #ls /mnt
+ a b c
+
+ #ls /tmp
+ a b c
+
+ Now lets say we mount a device at /tmp/a
+ #mount /dev/sd0 /tmp/a
+
+ #ls /tmp/a
+ t1 t2 t2
+
+ #ls /mnt/a
+ t1 t2 t2
+
+ Note that the mount has propagated to the mount at /mnt as well.
+
+ And the same is true even when /dev/sd0 is mounted on /mnt/a. The
+ contents will be visible under /tmp/a too.
+
+
+2b) A slave mount is like a shared mount except that mount and umount events
+ only propagate towards it.
+
+ All slave mounts have a master mount which is a shared.
+
+ Here is an example:
+
+ Lets say /mnt has a mount which is shared.
+ #mount --make-shared /mnt
+
+ Lets bind mount /mnt to /tmp
+ #mount --bind /mnt /tmp
+
+ the new mount at /tmp becomes a shared mount and it is a replica of
+ the mount at /mnt.
+
+ Now lets make the mount at /tmp; a slave of /mnt
+ #mount --make-slave /tmp
+ [or smount /tmp slave]
+
+ lets mount /dev/sd0 on /mnt/a
+ #mount /dev/sd0 /mnt/a
+
+ #ls /mnt/a
+ t1 t2 t3
+
+ #ls /tmp/a
+ t1 t2 t3
+
+ Note the mount event has propagated to the mount at /tmp
+
+ However lets see what happens if we mount something on the mount at /tmp
+
+ #mount /dev/sd1 /tmp/b
+
+ #ls /tmp/b
+ s1 s2 s3
+
+ #ls /mnt/b
+
+ Note how the mount event has not propagated to the mount at
+ /mnt
+
+
+2c) A private mount does not forward or receive propagation.
+
+ This is the mount we are familiar with. Its the default type.
+
+
+2d) A unbindable mount is a unbindable private mount
+
+ lets say we have a mount at /mnt and we make is unbindable
+
+ #mount --make-unbindable /mnt
+ [ smount /mnt unbindable ]
+
+ Lets try to bind mount this mount somewhere else.
+ # mount --bind /mnt /tmp
+ mount: wrong fs type, bad option, bad superblock on /mnt,
+ or too many mounted file systems
+
+ Binding a unbindable mount is a invalid operation.
+
+
+3) smount command
+
+ Currently the mount command is not aware of shared subtree features.
+ Work is in progress to add the support in mount ( util-linux package ).
+ Till then use the following program.
+
+ ------------------------------------------------------------------------
+ //
+ //this code was developed my Miklos Szeredi <miklos@szeredi.hu>
+ //and modified by Ram Pai <linuxram@us.ibm.com>
+ // sample usage:
+ // smount /tmp shared
+ //
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <unistd.h>
+ #include <sys/mount.h>
+ #include <sys/fsuid.h>
+
+ #ifndef MS_REC
+ #define MS_REC 0x4000 /* 16384: Recursive loopback */
+ #endif
+
+ #ifndef MS_SHARED
+ #define MS_SHARED 1<<20 /* Shared */
+ #endif
+
+ #ifndef MS_PRIVATE
+ #define MS_PRIVATE 1<<18 /* Private */
+ #endif
+
+ #ifndef MS_SLAVE
+ #define MS_SLAVE 1<<19 /* Slave */
+ #endif
+
+ #ifndef MS_UNBINDABLE
+ #define MS_UNBINDABLE 1<<17 /* Unbindable */
+ #endif
+
+ int main(int argc, char *argv[])
+ {
+ int type;
+ if(argc != 3) {
+ fprintf(stderr, "usage: %s dir "
+ "<rshared|rslave|rprivate|runbindable|shared|slave"
+ "|private|unbindable>\n" , argv[0]);
+ return 1;
+ }
+
+ fprintf(stdout, "%s %s %s\n", argv[0], argv[1], argv[2]);
+
+ if (strcmp(argv[2],"rshared")==0)
+ type=(MS_SHARED|MS_REC);
+ else if (strcmp(argv[2],"rslave")==0)
+ type=(MS_SLAVE|MS_REC);
+ else if (strcmp(argv[2],"rprivate")==0)
+ type=(MS_PRIVATE|MS_REC);
+ else if (strcmp(argv[2],"runbindable")==0)
+ type=(MS_UNBINDABLE|MS_REC);
+ else if (strcmp(argv[2],"shared")==0)
+ type=MS_SHARED;
+ else if (strcmp(argv[2],"slave")==0)
+ type=MS_SLAVE;
+ else if (strcmp(argv[2],"private")==0)
+ type=MS_PRIVATE;
+ else if (strcmp(argv[2],"unbindable")==0)
+ type=MS_UNBINDABLE;
+ else {
+ fprintf(stderr, "invalid operation: %s\n", argv[2]);
+ return 1;
+ }
+ setfsuid(getuid());
+
+ if(mount("", argv[1], "dontcare", type, "") == -1) {
+ perror("mount");
+ return 1;
+ }
+ return 0;
+ }
+ -----------------------------------------------------------------------
+
+ Copy the above code snippet into smount.c
+ gcc -o smount smount.c
+
+
+ (i) To mark all the mounts under /mnt as shared execute the following
+ command:
+
+ smount /mnt rshared
+ the corresponding syntax planned for mount command is
+ mount --make-rshared /mnt
+
+ just to mark a mount /mnt as shared, execute the following
+ command:
+ smount /mnt shared
+ the corresponding syntax planned for mount command is
+ mount --make-shared /mnt
+
+ (ii) To mark all the shared mounts under /mnt as slave execute the
+ following
+
+ command:
+ smount /mnt rslave
+ the corresponding syntax planned for mount command is
+ mount --make-rslave /mnt
+
+ just to mark a mount /mnt as slave, execute the following
+ command:
+ smount /mnt slave
+ the corresponding syntax planned for mount command is
+ mount --make-slave /mnt
+
+ (iii) To mark all the mounts under /mnt as private execute the
+ following command:
+
+ smount /mnt rprivate
+ the corresponding syntax planned for mount command is
+ mount --make-rprivate /mnt
+
+ just to mark a mount /mnt as private, execute the following
+ command:
+ smount /mnt private
+ the corresponding syntax planned for mount command is
+ mount --make-private /mnt
+
+ NOTE: by default all the mounts are created as private. But if
+ you want to change some shared/slave/unbindable mount as
+ private at a later point in time, this command can help.
+
+ (iv) To mark all the mounts under /mnt as unbindable execute the
+ following
+
+ command:
+ smount /mnt runbindable
+ the corresponding syntax planned for mount command is
+ mount --make-runbindable /mnt
+
+ just to mark a mount /mnt as unbindable, execute the following
+ command:
+ smount /mnt unbindable
+ the corresponding syntax planned for mount command is
+ mount --make-unbindable /mnt
+
+
+4) Use cases
+------------
+
+ A) A process wants to clone its own namespace, but still wants to
+ access the CD that got mounted recently.
+
+ Solution:
+
+ The system administrator can make the mount at /cdrom shared
+ mount --bind /cdrom /cdrom
+ mount --make-shared /cdrom
+
+ Now any process that clones off a new namespace will have a
+ mount at /cdrom which is a replica of the same mount in the
+ parent namespace.
+
+ So when a CD is inserted and mounted at /cdrom that mount gets
+ propagated to the other mount at /cdrom in all the other clone
+ namespaces.
+
+ B) A process wants its mounts invisible to any other process, but
+ still be able to see the other system mounts.
+
+ Solution:
+
+ To begin with, the administrator can mark the entire mount tree
+ as shareable.
+
+ mount --make-rshared /
+
+ A new process can clone off a new namespace. And mark some part
+ of its namespace as slave
+
+ mount --make-rslave /myprivatetree
+
+ Hence forth any mounts within the /myprivatetree done by the
+ process will not show up in any other namespace. However mounts
+ done in the parent namespace under /myprivatetree still shows
+ up in the process's namespace.
+
+
+ Apart from the above semantics this feature provides the
+ building blocks to solve the following problems:
+
+ C) Per-user namespace
+
+ The above semantics allows a way to share mounts across
+ namespaces. But namespaces are associated with processes. If
+ namespaces are made first class objects with user API to
+ associate/disassociate a namespace with userid, then each user
+ could have his/her own namespace and tailor it to his/her
+ requirements. Offcourse its needs support from PAM.
+
+ D) Versioned files
+
+ If the entire mount tree is visible at multiple locations, then
+ a underlying versioning file system can return different
+ version of the file depending on the path used to access that
+ file.
+
+ An example is:
+
+ mount --make-shared /
+ mount --rbind / /view/v1
+ mount --rbind / /view/v2
+ mount --rbind / /view/v3
+ mount --rbind / /view/v4
+
+ and if /usr has a versioning filesystem mounted, than that
+ mount appears at /view/v1/usr, /view/v2/usr, /view/v3/usr and
+ /view/v4/usr too
+
+ A user can request v3 version of the file /usr/fs/namespace.c
+ by accessing /view/v3/usr/fs/namespace.c . The underlying
+ versioning filesystem can then decipher that v3 version of the
+ filesystem is being requested and return the corresponding
+ inode.
+
+5) Detailed semantics:
+-------------------
+ The section below explains the detailed semantics of
+ bind, rbind, move, mount, umount and clone-namespace operations.
+
+ Note: the word 'vfsmount' and the noun 'mount' have been used
+ to mean the same thing, throughout this document.
+
+5a) Mount states
+
+ A given mount can be in one of the following states
+ 1) shared
+ 2) slave
+ 3) shared and slave
+ 4) private
+ 5) unbindable
+
+ A 'propagation event' is defined as event generated on a vfsmount
+ that leads to mount or unmount actions in other vfsmounts.
+
+ A 'peer group' is defined as a group of vfsmounts that propagate
+ events to each other.
+
+ (1) Shared mounts
+
+ A 'shared mount' is defined as a vfsmount that belongs to a
+ 'peer group'.
+
+ For example:
+ mount --make-shared /mnt
+ mount --bin /mnt /tmp
+
+ The mount at /mnt and that at /tmp are both shared and belong
+ to the same peer group. Anything mounted or unmounted under
+ /mnt or /tmp reflect in all the other mounts of its peer
+ group.
+
+
+ (2) Slave mounts
+
+ A 'slave mount' is defined as a vfsmount that receives
+ propagation events and does not forward propagation events.
+
+ A slave mount as the name implies has a master mount from which
+ mount/unmount events are received. Events do not propagate from
+ the slave mount to the master. Only a shared mount can be made
+ a slave by executing the following command
+
+ mount --make-slave mount
+
+ A shared mount that is made as a slave is no more shared unless
+ modified to become shared.
+
+ (3) Shared and Slave
+
+ A vfsmount can be both shared as well as slave. This state
+ indicates that the mount is a slave of some vfsmount, and
+ has its own peer group too. This vfsmount receives propagation
+ events from its master vfsmount, and also forwards propagation
+ events to its 'peer group' and to its slave vfsmounts.
+
+ Strictly speaking, the vfsmount is shared having its own
+ peer group, and this peer-group is a slave of some other
+ peer group.
+
+ Only a slave vfsmount can be made as 'shared and slave' by
+ either executing the following command
+ mount --make-shared mount
+ or by moving the slave vfsmount under a shared vfsmount.
+
+ (4) Private mount
+
+ A 'private mount' is defined as vfsmount that does not
+ receive or forward any propagation events.
+
+ (5) Unbindable mount
+
+ A 'unbindable mount' is defined as vfsmount that does not
+ receive or forward any propagation events and cannot
+ be bind mounted.
+
+
+ State diagram:
+ The state diagram below explains the state transition of a mount,
+ in response to various commands.
+ ------------------------------------------------------------------------
+ | |make-shared | make-slave | make-private |make-unbindab|
+ --------------|------------|--------------|--------------|-------------|
+ |shared |shared |*slave/private| private | unbindable |
+ | | | | | |
+ |-------------|------------|--------------|--------------|-------------|
+ |slave |shared | **slave | private | unbindable |
+ | |and slave | | | |
+ |-------------|------------|--------------|--------------|-------------|
+ |shared |shared | slave | private | unbindable |
+ |and slave |and slave | | | |
+ |-------------|------------|--------------|--------------|-------------|
+ |private |shared | **private | private | unbindable |
+ |-------------|------------|--------------|--------------|-------------|
+ |unbindable |shared |**unbindable | private | unbindable |
+ ------------------------------------------------------------------------
+
+ * if the shared mount is the only mount in its peer group, making it
+ slave, makes it private automatically. Note that there is no master to
+ which it can be slaved to.
+
+ ** slaving a non-shared mount has no effect on the mount.
+
+ Apart from the commands listed below, the 'move' operation also changes
+ the state of a mount depending on type of the destination mount. Its
+ explained in section 5d.
+
+5b) Bind semantics
+
+ Consider the following command
+
+ mount --bind A/a B/b
+
+ where 'A' is the source mount, 'a' is the dentry in the mount 'A', 'B'
+ is the destination mount and 'b' is the dentry in the destination mount.
+
+ The outcome depends on the type of mount of 'A' and 'B'. The table
+ below contains quick reference.
+ ---------------------------------------------------------------------------
+ | BIND MOUNT OPERATION |
+ |**************************************************************************
+ |source(A)->| shared | private | slave | unbindable |
+ | dest(B) | | | | |
+ | | | | | | |
+ | v | | | | |
+ |**************************************************************************
+ | shared | shared | shared | shared & slave | invalid |
+ | | | | | |
+ |non-shared| shared | private | slave | invalid |
+ ***************************************************************************
+
+ Details:
+
+ 1. 'A' is a shared mount and 'B' is a shared mount. A new mount 'C'
+ which is clone of 'A', is created. Its root dentry is 'a' . 'C' is
+ mounted on mount 'B' at dentry 'b'. Also new mount 'C1', 'C2', 'C3' ...
+ are created and mounted at the dentry 'b' on all mounts where 'B'
+ propagates to. A new propagation tree containing 'C1',..,'Cn' is
+ created. This propagation tree is identical to the propagation tree of
+ 'B'. And finally the peer-group of 'C' is merged with the peer group
+ of 'A'.
+
+ 2. 'A' is a private mount and 'B' is a shared mount. A new mount 'C'
+ which is clone of 'A', is created. Its root dentry is 'a'. 'C' is
+ mounted on mount 'B' at dentry 'b'. Also new mount 'C1', 'C2', 'C3' ...
+ are created and mounted at the dentry 'b' on all mounts where 'B'
+ propagates to. A new propagation tree is set containing all new mounts
+ 'C', 'C1', .., 'Cn' with exactly the same configuration as the
+ propagation tree for 'B'.
+
+ 3. 'A' is a slave mount of mount 'Z' and 'B' is a shared mount. A new
+ mount 'C' which is clone of 'A', is created. Its root dentry is 'a' .
+ 'C' is mounted on mount 'B' at dentry 'b'. Also new mounts 'C1', 'C2',
+ 'C3' ... are created and mounted at the dentry 'b' on all mounts where
+ 'B' propagates to. A new propagation tree containing the new mounts
+ 'C','C1',.. 'Cn' is created. This propagation tree is identical to the
+ propagation tree for 'B'. And finally the mount 'C' and its peer group
+ is made the slave of mount 'Z'. In other words, mount 'C' is in the
+ state 'slave and shared'.
+
+ 4. 'A' is a unbindable mount and 'B' is a shared mount. This is a
+ invalid operation.
+
+ 5. 'A' is a private mount and 'B' is a non-shared(private or slave or
+ unbindable) mount. A new mount 'C' which is clone of 'A', is created.
+ Its root dentry is 'a'. 'C' is mounted on mount 'B' at dentry 'b'.
+
+ 6. 'A' is a shared mount and 'B' is a non-shared mount. A new mount 'C'
+ which is a clone of 'A' is created. Its root dentry is 'a'. 'C' is
+ mounted on mount 'B' at dentry 'b'. 'C' is made a member of the
+ peer-group of 'A'.
+
+ 7. 'A' is a slave mount of mount 'Z' and 'B' is a non-shared mount. A
+ new mount 'C' which is a clone of 'A' is created. Its root dentry is
+ 'a'. 'C' is mounted on mount 'B' at dentry 'b'. Also 'C' is set as a
+ slave mount of 'Z'. In other words 'A' and 'C' are both slave mounts of
+ 'Z'. All mount/unmount events on 'Z' propagates to 'A' and 'C'. But
+ mount/unmount on 'A' do not propagate anywhere else. Similarly
+ mount/unmount on 'C' do not propagate anywhere else.
+
+ 8. 'A' is a unbindable mount and 'B' is a non-shared mount. This is a
+ invalid operation. A unbindable mount cannot be bind mounted.
+
+5c) Rbind semantics
+
+ rbind is same as bind. Bind replicates the specified mount. Rbind
+ replicates all the mounts in the tree belonging to the specified mount.
+ Rbind mount is bind mount applied to all the mounts in the tree.
+
+ If the source tree that is rbind has some unbindable mounts,
+ then the subtree under the unbindable mount is pruned in the new
+ location.
+
+ eg: lets say we have the following mount tree.
+
+ A
+ / \
+ B C
+ / \ / \
+ D E F G
+
+ Lets say all the mount except the mount C in the tree are
+ of a type other than unbindable.
+
+ If this tree is rbound to say Z
+
+ We will have the following tree at the new location.
+
+ Z
+ |
+ A'
+ /
+ B' Note how the tree under C is pruned
+ / \ in the new location.
+ D' E'
+
+
+
+5d) Move semantics
+
+ Consider the following command
+
+ mount --move A B/b
+
+ where 'A' is the source mount, 'B' is the destination mount and 'b' is
+ the dentry in the destination mount.
+
+ The outcome depends on the type of the mount of 'A' and 'B'. The table
+ below is a quick reference.
+ ---------------------------------------------------------------------------
+ | MOVE MOUNT OPERATION |
+ |**************************************************************************
+ | source(A)->| shared | private | slave | unbindable |
+ | dest(B) | | | | |
+ | | | | | | |
+ | v | | | | |
+ |**************************************************************************
+ | shared | shared | shared |shared and slave| invalid |
+ | | | | | |
+ |non-shared| shared | private | slave | unbindable |
+ ***************************************************************************
+ NOTE: moving a mount residing under a shared mount is invalid.
+
+ Details follow:
+
+ 1. 'A' is a shared mount and 'B' is a shared mount. The mount 'A' is
+ mounted on mount 'B' at dentry 'b'. Also new mounts 'A1', 'A2'...'An'
+ are created and mounted at dentry 'b' on all mounts that receive
+ propagation from mount 'B'. A new propagation tree is created in the
+ exact same configuration as that of 'B'. This new propagation tree
+ contains all the new mounts 'A1', 'A2'... 'An'. And this new
+ propagation tree is appended to the already existing propagation tree
+ of 'A'.
+
+ 2. 'A' is a private mount and 'B' is a shared mount. The mount 'A' is
+ mounted on mount 'B' at dentry 'b'. Also new mount 'A1', 'A2'... 'An'
+ are created and mounted at dentry 'b' on all mounts that receive
+ propagation from mount 'B'. The mount 'A' becomes a shared mount and a
+ propagation tree is created which is identical to that of
+ 'B'. This new propagation tree contains all the new mounts 'A1',
+ 'A2'... 'An'.
+
+ 3. 'A' is a slave mount of mount 'Z' and 'B' is a shared mount. The
+ mount 'A' is mounted on mount 'B' at dentry 'b'. Also new mounts 'A1',
+ 'A2'... 'An' are created and mounted at dentry 'b' on all mounts that
+ receive propagation from mount 'B'. A new propagation tree is created
+ in the exact same configuration as that of 'B'. This new propagation
+ tree contains all the new mounts 'A1', 'A2'... 'An'. And this new
+ propagation tree is appended to the already existing propagation tree of
+ 'A'. Mount 'A' continues to be the slave mount of 'Z' but it also
+ becomes 'shared'.
+
+ 4. 'A' is a unbindable mount and 'B' is a shared mount. The operation
+ is invalid. Because mounting anything on the shared mount 'B' can
+ create new mounts that get mounted on the mounts that receive
+ propagation from 'B'. And since the mount 'A' is unbindable, cloning
+ it to mount at other mountpoints is not possible.
+
+ 5. 'A' is a private mount and 'B' is a non-shared(private or slave or
+ unbindable) mount. The mount 'A' is mounted on mount 'B' at dentry 'b'.
+
+ 6. 'A' is a shared mount and 'B' is a non-shared mount. The mount 'A'
+ is mounted on mount 'B' at dentry 'b'. Mount 'A' continues to be a
+ shared mount.
+
+ 7. 'A' is a slave mount of mount 'Z' and 'B' is a non-shared mount.
+ The mount 'A' is mounted on mount 'B' at dentry 'b'. Mount 'A'
+ continues to be a slave mount of mount 'Z'.
+
+ 8. 'A' is a unbindable mount and 'B' is a non-shared mount. The mount
+ 'A' is mounted on mount 'B' at dentry 'b'. Mount 'A' continues to be a
+ unbindable mount.
+
+5e) Mount semantics
+
+ Consider the following command
+
+ mount device B/b
+
+ 'B' is the destination mount and 'b' is the dentry in the destination
+ mount.
+
+ The above operation is the same as bind operation with the exception
+ that the source mount is always a private mount.
+
+
+5f) Unmount semantics
+
+ Consider the following command
+
+ umount A
+
+ where 'A' is a mount mounted on mount 'B' at dentry 'b'.
+
+ If mount 'B' is shared, then all most-recently-mounted mounts at dentry
+ 'b' on mounts that receive propagation from mount 'B' and does not have
+ sub-mounts within them are unmounted.
+
+ Example: Lets say 'B1', 'B2', 'B3' are shared mounts that propagate to
+ each other.
+
+ lets say 'A1', 'A2', 'A3' are first mounted at dentry 'b' on mount
+ 'B1', 'B2' and 'B3' respectively.
+
+ lets say 'C1', 'C2', 'C3' are next mounted at the same dentry 'b' on
+ mount 'B1', 'B2' and 'B3' respectively.
+
+ if 'C1' is unmounted, all the mounts that are most-recently-mounted on
+ 'B1' and on the mounts that 'B1' propagates-to are unmounted.
+
+ 'B1' propagates to 'B2' and 'B3'. And the most recently mounted mount
+ on 'B2' at dentry 'b' is 'C2', and that of mount 'B3' is 'C3'.
+
+ So all 'C1', 'C2' and 'C3' should be unmounted.
+
+ If any of 'C2' or 'C3' has some child mounts, then that mount is not
+ unmounted, but all other mounts are unmounted. However if 'C1' is told
+ to be unmounted and 'C1' has some sub-mounts, the umount operation is
+ failed entirely.
+
+5g) Clone Namespace
+
+ A cloned namespace contains all the mounts as that of the parent
+ namespace.
+
+ Lets say 'A' and 'B' are the corresponding mounts in the parent and the
+ child namespace.
+
+ If 'A' is shared, then 'B' is also shared and 'A' and 'B' propagate to
+ each other.
+
+ If 'A' is a slave mount of 'Z', then 'B' is also the slave mount of
+ 'Z'.
+
+ If 'A' is a private mount, then 'B' is a private mount too.
+
+ If 'A' is unbindable mount, then 'B' is a unbindable mount too.
+
+
+6) Quiz
+
+ A. What is the result of the following command sequence?
+
+ mount --bind /mnt /mnt
+ mount --make-shared /mnt
+ mount --bind /mnt /tmp
+ mount --move /tmp /mnt/1
+
+ what should be the contents of /mnt /mnt/1 /mnt/1/1 should be?
+ Should they all be identical? or should /mnt and /mnt/1 be
+ identical only?
+
+
+ B. What is the result of the following command sequence?
+
+ mount --make-rshared /
+ mkdir -p /v/1
+ mount --rbind / /v/1
+
+ what should be the content of /v/1/v/1 be?
+
+
+ C. What is the result of the following command sequence?
+
+ mount --bind /mnt /mnt
+ mount --make-shared /mnt
+ mkdir -p /mnt/1/2/3 /mnt/1/test
+ mount --bind /mnt/1 /tmp
+ mount --make-slave /mnt
+ mount --make-shared /mnt
+ mount --bind /mnt/1/2 /tmp1
+ mount --make-slave /mnt
+
+ At this point we have the first mount at /tmp and
+ its root dentry is 1. Lets call this mount 'A'
+ And then we have a second mount at /tmp1 with root
+ dentry 2. Lets call this mount 'B'
+ Next we have a third mount at /mnt with root dentry
+ mnt. Lets call this mount 'C'
+
+ 'B' is the slave of 'A' and 'C' is a slave of 'B'
+ A -> B -> C
+
+ at this point if we execute the following command
+
+ mount --bind /bin /tmp/test
+
+ The mount is attempted on 'A'
+
+ will the mount propagate to 'B' and 'C' ?
+
+ what would be the contents of
+ /mnt/1/test be?
+
+7) FAQ
+
+ Q1. Why is bind mount needed? How is it different from symbolic links?
+ symbolic links can get stale if the destination mount gets
+ unmounted or moved. Bind mounts continue to exist even if the
+ other mount is unmounted or moved.
+
+ Q2. Why can't the shared subtree be implemented using exportfs?
+
+ exportfs is a heavyweight way of accomplishing part of what
+ shared subtree can do. I cannot imagine a way to implement the
+ semantics of slave mount using exportfs?
+
+ Q3 Why is unbindable mount needed?
+
+ Lets say we want to replicate the mount tree at multiple
+ locations within the same subtree.
+
+ if one rbind mounts a tree within the same subtree 'n' times
+ the number of mounts created is an exponential function of 'n'.
+ Having unbindable mount can help prune the unneeded bind
+ mounts. Here is a example.
+
+ step 1:
+ lets say the root tree has just two directories with
+ one vfsmount.
+ root
+ / \
+ tmp usr
+
+ And we want to replicate the tree at multiple
+ mountpoints under /root/tmp
+
+ step2:
+ mount --make-shared /root
+
+ mkdir -p /tmp/m1
+
+ mount --rbind /root /tmp/m1
+
+ the new tree now looks like this:
+
+ root
+ / \
+ tmp usr
+ /
+ m1
+ / \
+ tmp usr
+ /
+ m1
+
+ it has two vfsmounts
+
+ step3:
+ mkdir -p /tmp/m2
+ mount --rbind /root /tmp/m2
+
+ the new tree now looks like this:
+
+ root
+ / \
+ tmp usr
+ / \
+ m1 m2
+ / \ / \
+ tmp usr tmp usr
+ / \ /
+ m1 m2 m1
+ / \ / \
+ tmp usr tmp usr
+ / / \
+ m1 m1 m2
+ / \
+ tmp usr
+ / \
+ m1 m2
+
+ it has 6 vfsmounts
+
+ step 4:
+ mkdir -p /tmp/m3
+ mount --rbind /root /tmp/m3
+
+ I wont' draw the tree..but it has 24 vfsmounts
+
+
+ at step i the number of vfsmounts is V[i] = i*V[i-1].
+ This is an exponential function. And this tree has way more
+ mounts than what we really needed in the first place.
+
+ One could use a series of umount at each step to prune
+ out the unneeded mounts. But there is a better solution.
+ Unclonable mounts come in handy here.
+
+ step 1:
+ lets say the root tree has just two directories with
+ one vfsmount.
+ root
+ / \
+ tmp usr
+
+ How do we set up the same tree at multiple locations under
+ /root/tmp
+
+ step2:
+ mount --bind /root/tmp /root/tmp
+
+ mount --make-rshared /root
+ mount --make-unbindable /root/tmp
+
+ mkdir -p /tmp/m1
+
+ mount --rbind /root /tmp/m1
+
+ the new tree now looks like this:
+
+ root
+ / \
+ tmp usr
+ /
+ m1
+ / \
+ tmp usr
+
+ step3:
+ mkdir -p /tmp/m2
+ mount --rbind /root /tmp/m2
+
+ the new tree now looks like this:
+
+ root
+ / \
+ tmp usr
+ / \
+ m1 m2
+ / \ / \
+ tmp usr tmp usr
+
+ step4:
+
+ mkdir -p /tmp/m3
+ mount --rbind /root /tmp/m3
+
+ the new tree now looks like this:
+
+ root
+ / \
+ tmp usr
+ / \ \
+ m1 m2 m3
+ / \ / \ / \
+ tmp usr tmp usr tmp usr
+
+8) Implementation
+
+8A) Datastructure
+
+ 4 new fields are introduced to struct vfsmount
+ ->mnt_share
+ ->mnt_slave_list
+ ->mnt_slave
+ ->mnt_master
+
+ ->mnt_share links togather all the mount to/from which this vfsmount
+ send/receives propagation events.
+
+ ->mnt_slave_list links all the mounts to which this vfsmount propagates
+ to.
+
+ ->mnt_slave links togather all the slaves that its master vfsmount
+ propagates to.
+
+ ->mnt_master points to the master vfsmount from which this vfsmount
+ receives propagation.
+
+ ->mnt_flags takes two more flags to indicate the propagation status of
+ the vfsmount. MNT_SHARE indicates that the vfsmount is a shared
+ vfsmount. MNT_UNCLONABLE indicates that the vfsmount cannot be
+ replicated.
+
+ All the shared vfsmounts in a peer group form a cyclic list through
+ ->mnt_share.
+
+ All vfsmounts with the same ->mnt_master form on a cyclic list anchored
+ in ->mnt_master->mnt_slave_list and going through ->mnt_slave.
+
+ ->mnt_master can point to arbitrary (and possibly different) members
+ of master peer group. To find all immediate slaves of a peer group
+ you need to go through _all_ ->mnt_slave_list of its members.
+ Conceptually it's just a single set - distribution among the
+ individual lists does not affect propagation or the way propagation
+ tree is modified by operations.
+
+ A example propagation tree looks as shown in the figure below.
+ [ NOTE: Though it looks like a forest, if we consider all the shared
+ mounts as a conceptual entity called 'pnode', it becomes a tree]
+
+
+ A <--> B <--> C <---> D
+ /|\ /| |\
+ / F G J K H I
+ /
+ E<-->K
+ /|\
+ M L N
+
+ In the above figure A,B,C and D all are shared and propagate to each
+ other. 'A' has got 3 slave mounts 'E' 'F' and 'G' 'C' has got 2 slave
+ mounts 'J' and 'K' and 'D' has got two slave mounts 'H' and 'I'.
+ 'E' is also shared with 'K' and they propagate to each other. And
+ 'K' has 3 slaves 'M', 'L' and 'N'
+
+ A's ->mnt_share links with the ->mnt_share of 'B' 'C' and 'D'
+
+ A's ->mnt_slave_list links with ->mnt_slave of 'E', 'K', 'F' and 'G'
+
+ E's ->mnt_share links with ->mnt_share of K
+ 'E', 'K', 'F', 'G' have their ->mnt_master point to struct
+ vfsmount of 'A'
+ 'M', 'L', 'N' have their ->mnt_master point to struct vfsmount of 'K'
+ K's ->mnt_slave_list links with ->mnt_slave of 'M', 'L' and 'N'
+
+ C's ->mnt_slave_list links with ->mnt_slave of 'J' and 'K'
+ J and K's ->mnt_master points to struct vfsmount of C
+ and finally D's ->mnt_slave_list links with ->mnt_slave of 'H' and 'I'
+ 'H' and 'I' have their ->mnt_master pointing to struct vfsmount of 'D'.
+
+
+ NOTE: The propagation tree is orthogonal to the mount tree.
+
+
+8B Algorithm:
+
+ The crux of the implementation resides in rbind/move operation.
+
+ The overall algorithm breaks the operation into 3 phases: (look at
+ attach_recursive_mnt() and propagate_mnt())
+
+ 1. prepare phase.
+ 2. commit phases.
+ 3. abort phases.
+
+ Prepare phase:
+
+ for each mount in the source tree:
+ a) Create the necessary number of mount trees to
+ be attached to each of the mounts that receive
+ propagation from the destination mount.
+ b) Do not attach any of the trees to its destination.
+ However note down its ->mnt_parent and ->mnt_mountpoint
+ c) Link all the new mounts to form a propagation tree that
+ is identical to the propagation tree of the destination
+ mount.
+
+ If this phase is successful, there should be 'n' new
+ propagation trees; where 'n' is the number of mounts in the
+ source tree. Go to the commit phase
+
+ Also there should be 'm' new mount trees, where 'm' is
+ the number of mounts to which the destination mount
+ propagates to.
+
+ if any memory allocations fail, go to the abort phase.
+
+ Commit phase
+ attach each of the mount trees to their corresponding
+ destination mounts.
+
+ Abort phase
+ delete all the newly created trees.
+
+ NOTE: all the propagation related functionality resides in the file
+ pnode.c
+
+
+------------------------------------------------------------------------
+
+version 0.1 (created the initial document, Ram Pai linuxram@us.ibm.com)
+version 0.2 (Incorporated comments from Al Viro)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 296bc03..91d5ef3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -324,7 +324,7 @@
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
- depends on EXPERIMENTAL && BROKEN #&& n
+ depends on EXPERIMENTAL && REALVIEW_MPCORE
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
@@ -585,7 +585,7 @@
config FPE_NWFPE_XP
bool "Support extended precision"
- depends on FPE_NWFPE && !CPU_BIG_ENDIAN
+ depends on FPE_NWFPE
help
Say Y to include 80-bit support in the kernel floating-point
emulator. Otherwise, only 32 and 64-bit support is compiled in.
diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c
index df14096..6851aba 100644
--- a/arch/arm/mach-ixp2000/core.c
+++ b/arch/arm/mach-ixp2000/core.c
@@ -84,63 +84,54 @@
.virtual = IXP2000_CAP_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_CAP_PHYS_BASE),
.length = IXP2000_CAP_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_INTCTL_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE),
.length = IXP2000_INTCTL_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CREG_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE),
.length = IXP2000_PCI_CREG_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CSR_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE),
.length = IXP2000_PCI_CSR_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_MSF_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_MSF_PHYS_BASE),
.length = IXP2000_MSF_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_IO_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE),
.length = IXP2000_PCI_IO_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CFG0_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE),
.length = IXP2000_PCI_CFG0_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CFG1_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE),
.length = IXP2000_PCI_CFG1_SIZE,
- .type = MT_DEVICE
+ .type = MT_IXP2000_DEVICE,
}
};
void __init ixp2000_map_io(void)
{
- extern unsigned int processor_id;
-
/*
- * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE for
- * tweaking the PMDs so XCB=101. On IXP2800s we use the normal
- * PMD flags.
+ * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that
+ * XCB=101 (to avoid triggering erratum #66), and given that
+ * this mode speeds up I/O accesses and we have write buffer
+ * flushes in the right places anyway, it doesn't hurt to use
+ * XCB=101 for all IXP2000s.
*/
- if ((processor_id & 0xfffffff0) == 0x69054190) {
- int i;
-
- printk(KERN_INFO "Enabling IXP2400 erratum #66 workaround\n");
-
- for(i=0;i<ARRAY_SIZE(ixp2000_io_desc);i++)
- ixp2000_io_desc[i].type = MT_IXP2000_DEVICE;
- }
-
iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
/* Set slowport to 8-bit mode. */
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index 4b63dc9..1299768 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -8,4 +8,13 @@
help
Include support for the ARM(R) RealView Emulation Baseboard platform.
+config REALVIEW_MPCORE
+ bool "Support MPcore tile"
+ depends on MACH_REALVIEW_EB
+ help
+ Enable support for the MPCore tile on the Realview platform.
+ Since there are device address and interrupt differences, a
+ kernel built with this option enabled is not compatible with
+ other tiles.
+
endmenu
diff --git a/arch/arm/mach-realview/Makefile b/arch/arm/mach-realview/Makefile
index 8d37ea1..011a85c 100644
--- a/arch/arm/mach-realview/Makefile
+++ b/arch/arm/mach-realview/Makefile
@@ -4,3 +4,4 @@
obj-y := core.o clock.o
obj-$(CONFIG_MACH_REALVIEW_EB) += realview_eb.o
+obj-$(CONFIG_SMP) += platsmp.o headsmp.o
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 575599d..d83e8ba 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -23,6 +23,7 @@
#define __ASM_ARCH_REALVIEW_H
#include <asm/hardware/amba.h>
+#include <asm/leds.h>
#include <asm/io.h>
#define __io_address(n) __io(IO_ADDRESS(n))
diff --git a/arch/arm/mach-realview/headsmp.S b/arch/arm/mach-realview/headsmp.S
new file mode 100644
index 0000000..4075473
--- /dev/null
+++ b/arch/arm/mach-realview/headsmp.S
@@ -0,0 +1,39 @@
+/*
+ * linux/arch/arm/mach-realview/headsmp.S
+ *
+ * Copyright (c) 2003 ARM Limited
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+ __INIT
+
+/*
+ * Realview specific entry point for secondary CPUs. This provides
+ * a "holding pen" into which all secondary cores are held until we're
+ * ready for them to initialise.
+ */
+ENTRY(realview_secondary_startup)
+ mrc p15, 0, r0, c0, c0, 5
+ and r0, r0, #15
+ adr r4, 1f
+ ldmia r4, {r5, r6}
+ sub r4, r4, r5
+ add r6, r6, r4
+pen: ldr r7, [r6]
+ cmp r7, r0
+ bne pen
+
+ /*
+ * we've been released from the holding pen: secondary_stack
+ * should now contain the SVC stack for this core
+ */
+ b secondary_startup
+
+1: .long .
+ .long pen_release
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
new file mode 100644
index 0000000..9844644
--- /dev/null
+++ b/arch/arm/mach-realview/platsmp.c
@@ -0,0 +1,195 @@
+/*
+ * linux/arch/arm/mach-realview/platsmp.c
+ *
+ * Copyright (C) 2002 ARM Ltd.
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/smp.h>
+
+#include <asm/cacheflush.h>
+#include <asm/hardware/arm_scu.h>
+#include <asm/hardware.h>
+
+#include "core.h"
+
+extern void realview_secondary_startup(void);
+
+/*
+ * control for which core is the next to come out of the secondary
+ * boot "holding pen"
+ */
+volatile int __cpuinitdata pen_release = -1;
+
+static unsigned int __init get_core_count(void)
+{
+ unsigned int ncores;
+
+ ncores = __raw_readl(IO_ADDRESS(REALVIEW_MPCORE_SCU_BASE) + SCU_CONFIG);
+
+ return (ncores & 0x03) + 1;
+}
+
+static DEFINE_SPINLOCK(boot_lock);
+
+void __cpuinit platform_secondary_init(unsigned int cpu)
+{
+ /*
+ * the primary core may have used a "cross call" soft interrupt
+ * to get this processor out of WFI in the BootMonitor - make
+ * sure that we are no longer being sent this soft interrupt
+ */
+ smp_cross_call_done(cpumask_of_cpu(cpu));
+
+ /*
+ * if any interrupts are already enabled for the primary
+ * core (e.g. timer irq), then they will not have been enabled
+ * for us: do so
+ */
+ gic_cpu_init(__io_address(REALVIEW_GIC_CPU_BASE));
+
+ /*
+ * let the primary processor know we're out of the
+ * pen, then head off into the C entry point
+ */
+ pen_release = -1;
+
+ /*
+ * Synchronise with the boot thread.
+ */
+ spin_lock(&boot_lock);
+ spin_unlock(&boot_lock);
+}
+
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ unsigned long timeout;
+
+ /*
+ * set synchronisation state between this boot processor
+ * and the secondary one
+ */
+ spin_lock(&boot_lock);
+
+ /*
+ * The secondary processor is waiting to be released from
+ * the holding pen - release it, then wait for it to flag
+ * that it has been released by resetting pen_release.
+ *
+ * Note that "pen_release" is the hardware CPU ID, whereas
+ * "cpu" is Linux's internal ID.
+ */
+ pen_release = cpu;
+ flush_cache_all();
+
+ /*
+ * XXX
+ *
+ * This is a later addition to the booting protocol: the
+ * bootMonitor now puts secondary cores into WFI, so
+ * poke_milo() no longer gets the cores moving; we need
+ * to send a soft interrupt to wake the secondary core.
+ * Use smp_cross_call() for this, since there's little
+ * point duplicating the code here
+ */
+ smp_cross_call(cpumask_of_cpu(cpu));
+
+ timeout = jiffies + (1 * HZ);
+ while (time_before(jiffies, timeout)) {
+ if (pen_release == -1)
+ break;
+
+ udelay(10);
+ }
+
+ /*
+ * now the secondary core is starting up let it run its
+ * calibrations, then wait for it to finish
+ */
+ spin_unlock(&boot_lock);
+
+ return pen_release != -1 ? -ENOSYS : 0;
+}
+
+static void __init poke_milo(void)
+{
+ extern void secondary_startup(void);
+
+ /* nobody is to be released from the pen yet */
+ pen_release = -1;
+
+ /*
+ * write the address of secondary startup into the system-wide
+ * flags register, then clear the bottom two bits, which is what
+ * BootMonitor is waiting for
+ */
+#if 1
+#define REALVIEW_SYS_FLAGSS_OFFSET 0x30
+ __raw_writel(virt_to_phys(realview_secondary_startup),
+ (IO_ADDRESS(REALVIEW_SYS_BASE) +
+ REALVIEW_SYS_FLAGSS_OFFSET));
+#define REALVIEW_SYS_FLAGSC_OFFSET 0x34
+ __raw_writel(3,
+ (IO_ADDRESS(REALVIEW_SYS_BASE) +
+ REALVIEW_SYS_FLAGSC_OFFSET));
+#endif
+
+ mb();
+}
+
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+ unsigned int ncores = get_core_count();
+ unsigned int cpu = smp_processor_id();
+ int i;
+
+ /* sanity check */
+ if (ncores == 0) {
+ printk(KERN_ERR
+ "Realview: strange CM count of 0? Default to 1\n");
+
+ ncores = 1;
+ }
+
+ if (ncores > NR_CPUS) {
+ printk(KERN_WARNING
+ "Realview: no. of cores (%d) greater than configured "
+ "maximum of %d - clipping\n",
+ ncores, NR_CPUS);
+ ncores = NR_CPUS;
+ }
+
+ smp_store_cpu_info(cpu);
+
+ /*
+ * are we trying to boot more cores than exist?
+ */
+ if (max_cpus > ncores)
+ max_cpus = ncores;
+
+ /*
+ * Initialise the possible/present maps.
+ * cpu_possible_map describes the set of CPUs which may be present
+ * cpu_present_map describes the set of CPUs populated
+ */
+ for (i = 0; i < max_cpus; i++) {
+ cpu_set(i, cpu_possible_map);
+ cpu_set(i, cpu_present_map);
+ }
+
+ /*
+ * Do we need any more CPUs? If so, then let them know where
+ * to start. Note that, on modern versions of MILO, the "poke"
+ * doesn't actually do anything until each individual core is
+ * sent a soft interrupt to get it out of WFI
+ */
+ if (max_cpus > 1)
+ poke_milo();
+}
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 267bb07..7dc3250 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -136,6 +136,11 @@
static void __init gic_init_irq(void)
{
+#ifdef CONFIG_REALVIEW_MPCORE
+ writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
+ writel(0x008003c0, __io_address(REALVIEW_SYS_BASE) + 0xd8);
+ writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
+#endif
gic_dist_init(__io_address(REALVIEW_GIC_DIST_BASE));
gic_cpu_init(__io_address(REALVIEW_GIC_CPU_BASE));
}
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index fb5b402..9e50127 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -354,7 +354,7 @@
{
struct cachepolicy *cp;
unsigned int cr = get_cr();
- unsigned int user_pgprot;
+ unsigned int user_pgprot, kern_pgprot;
int cpu_arch = cpu_architecture();
int i;
@@ -381,7 +381,7 @@
}
cp = &cache_policies[cachepolicy];
- user_pgprot = cp->pte;
+ kern_pgprot = user_pgprot = cp->pte;
/*
* ARMv6 and above have extended page tables.
@@ -393,6 +393,7 @@
*/
mem_types[MT_MEMORY].prot_sect &= ~PMD_BIT4;
mem_types[MT_ROM].prot_sect &= ~PMD_BIT4;
+
/*
* Mark cache clean areas and XIP ROM read only
* from SVC mode and no access from userspace.
@@ -412,32 +413,47 @@
* (iow, non-global)
*/
user_pgprot |= L_PTE_ASID;
+
+#ifdef CONFIG_SMP
+ /*
+ * Mark memory with the "shared" attribute for SMP systems
+ */
+ user_pgprot |= L_PTE_SHARED;
+ kern_pgprot |= L_PTE_SHARED;
+ mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
+#endif
}
+ for (i = 0; i < 16; i++) {
+ unsigned long v = pgprot_val(protection_map[i]);
+ v = (v & ~(L_PTE_BUFFERABLE|L_PTE_CACHEABLE)) | user_pgprot;
+ protection_map[i] = __pgprot(v);
+ }
+
+ mem_types[MT_LOW_VECTORS].prot_pte |= kern_pgprot;
+ mem_types[MT_HIGH_VECTORS].prot_pte |= kern_pgprot;
+
if (cpu_arch >= CPU_ARCH_ARMv5) {
- mem_types[MT_LOW_VECTORS].prot_pte |= cp->pte & PTE_CACHEABLE;
- mem_types[MT_HIGH_VECTORS].prot_pte |= cp->pte & PTE_CACHEABLE;
+#ifndef CONFIG_SMP
+ /*
+ * Only use write-through for non-SMP systems
+ */
+ mem_types[MT_LOW_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE;
+ mem_types[MT_HIGH_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE;
+#endif
} else {
- mem_types[MT_LOW_VECTORS].prot_pte |= cp->pte;
- mem_types[MT_HIGH_VECTORS].prot_pte |= cp->pte;
mem_types[MT_MINICLEAN].prot_sect &= ~PMD_SECT_TEX(1);
}
+ pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
+ L_PTE_DIRTY | L_PTE_WRITE |
+ L_PTE_EXEC | kern_pgprot);
+
mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_MEMORY].prot_sect |= ecc_mask | cp->pmd;
mem_types[MT_ROM].prot_sect |= cp->pmd;
- for (i = 0; i < 16; i++) {
- unsigned long v = pgprot_val(protection_map[i]);
- v = (v & ~(PTE_BUFFERABLE|PTE_CACHEABLE)) | user_pgprot;
- protection_map[i] = __pgprot(v);
- }
-
- pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
- L_PTE_DIRTY | L_PTE_WRITE |
- L_PTE_EXEC | cp->pte);
-
switch (cp->pmd) {
case PMD_SECT_WT:
mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WT;
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 9bb5fff..92f3ca3 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/asm-offsets.h>
+#include <asm/hardware/arm_scu.h>
#include <asm/procinfo.h>
#include <asm/pgtable.h>
@@ -112,6 +113,9 @@
ENTRY(cpu_v6_switch_mm)
mov r2, #0
ldr r1, [r1, #MM_CONTEXT_ID] @ get mm->context.id
+#ifdef CONFIG_SMP
+ orr r0, r0, #2 @ set shared pgtable
+#endif
mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB
mcr p15, 0, r2, c7, c10, 4 @ drain write buffer
mcr p15, 0, r0, c2, c0, 0 @ set TTB 0
@@ -140,7 +144,7 @@
ENTRY(cpu_v6_set_pte)
str r1, [r0], #-2048 @ linux version
- bic r2, r1, #0x000007f0
+ bic r2, r1, #0x000003f0
bic r2, r2, #0x00000003
orr r2, r2, #PTE_EXT_AP0 | 2
@@ -191,6 +195,23 @@
* - cache type register is implemented
*/
__v6_setup:
+#ifdef CONFIG_SMP
+ /* Set up the SCU on core 0 only */
+ mrc p15, 0, r0, c0, c0, 5 @ CPU core number
+ ands r0, r0, #15
+ moveq r0, #0x10000000 @ SCU_BASE
+ orreq r0, r0, #0x00100000
+ ldreq r5, [r0, #SCU_CTRL]
+ orreq r5, r5, #1
+ streq r5, [r0, #SCU_CTRL]
+
+#ifndef CONFIG_CPU_DCACHE_DISABLE
+ mrc p15, 0, r0, c1, c0, 1 @ Enable SMP/nAMP mode
+ orr r0, r0, #0x20
+ mcr p15, 0, r0, c1, c0, 1
+#endif
+#endif
+
mov r0, #0
mcr p15, 0, r0, c7, c14, 0 @ clean+invalidate D cache
mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
@@ -198,6 +219,9 @@
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
mcr p15, 0, r0, c8, c7, 0 @ invalidate I + D TLBs
mcr p15, 0, r0, c2, c0, 2 @ TTB control register
+#ifdef CONFIG_SMP
+ orr r4, r4, #2 @ set shared pgtable
+#endif
mcr p15, 0, r4, c2, c0, 1 @ load TTB1
#ifdef CONFIG_VFP
mrc p15, 0, r0, c1, c0, 2
diff --git a/arch/arm/nwfpe/fpa11.h b/arch/arm/nwfpe/fpa11.h
index 9677ae8..da4c616 100644
--- a/arch/arm/nwfpe/fpa11.h
+++ b/arch/arm/nwfpe/fpa11.h
@@ -60,7 +60,7 @@
#ifdef CONFIG_FPE_NWFPE_XP
floatx80 fExtended;
#else
- int padding[3];
+ u32 padding[3];
#endif
} FPREG;
diff --git a/arch/arm/nwfpe/fpa11_cpdt.c b/arch/arm/nwfpe/fpa11_cpdt.c
index b0db5cb..32859fa 100644
--- a/arch/arm/nwfpe/fpa11_cpdt.c
+++ b/arch/arm/nwfpe/fpa11_cpdt.c
@@ -59,8 +59,13 @@
p = (unsigned int *) &fpa11->fpreg[Fn].fExtended;
fpa11->fType[Fn] = typeExtended;
get_user(p[0], &pMem[0]); /* sign & exponent */
+#ifdef __ARMEB__
+ get_user(p[1], &pMem[1]); /* ms bits */
+ get_user(p[2], &pMem[2]); /* ls bits */
+#else
get_user(p[1], &pMem[2]); /* ls bits */
get_user(p[2], &pMem[1]); /* ms bits */
+#endif
}
#endif
@@ -177,8 +182,13 @@
}
put_user(val.i[0], &pMem[0]); /* sign & exp */
+#ifdef __ARMEB__
+ put_user(val.i[1], &pMem[1]); /* msw */
+ put_user(val.i[2], &pMem[2]);
+#else
put_user(val.i[1], &pMem[2]);
put_user(val.i[2], &pMem[1]); /* msw */
+#endif
}
#endif
diff --git a/arch/arm/nwfpe/fpopcode.c b/arch/arm/nwfpe/fpopcode.c
index 4c9f570..67ff2ab 100644
--- a/arch/arm/nwfpe/fpopcode.c
+++ b/arch/arm/nwfpe/fpopcode.c
@@ -29,14 +29,14 @@
#ifdef CONFIG_FPE_NWFPE_XP
const floatx80 floatx80Constant[] = {
- {0x0000, 0x0000000000000000ULL}, /* extended 0.0 */
- {0x3fff, 0x8000000000000000ULL}, /* extended 1.0 */
- {0x4000, 0x8000000000000000ULL}, /* extended 2.0 */
- {0x4000, 0xc000000000000000ULL}, /* extended 3.0 */
- {0x4001, 0x8000000000000000ULL}, /* extended 4.0 */
- {0x4001, 0xa000000000000000ULL}, /* extended 5.0 */
- {0x3ffe, 0x8000000000000000ULL}, /* extended 0.5 */
- {0x4002, 0xa000000000000000ULL} /* extended 10.0 */
+ { .high = 0x0000, .low = 0x0000000000000000ULL},/* extended 0.0 */
+ { .high = 0x3fff, .low = 0x8000000000000000ULL},/* extended 1.0 */
+ { .high = 0x4000, .low = 0x8000000000000000ULL},/* extended 2.0 */
+ { .high = 0x4000, .low = 0xc000000000000000ULL},/* extended 3.0 */
+ { .high = 0x4001, .low = 0x8000000000000000ULL},/* extended 4.0 */
+ { .high = 0x4001, .low = 0xa000000000000000ULL},/* extended 5.0 */
+ { .high = 0x3ffe, .low = 0x8000000000000000ULL},/* extended 0.5 */
+ { .high = 0x4002, .low = 0xa000000000000000ULL},/* extended 10.0 */
};
#endif
diff --git a/arch/arm/nwfpe/softfloat-specialize b/arch/arm/nwfpe/softfloat-specialize
index acf4091..d4a4c8e 100644
--- a/arch/arm/nwfpe/softfloat-specialize
+++ b/arch/arm/nwfpe/softfloat-specialize
@@ -332,6 +332,7 @@
z.low = LIT64( 0xC000000000000000 ) | ( a.high>>1 );
z.high = ( ( (bits16) a.sign )<<15 ) | 0x7FFF;
+ z.__padding = 0;
return z;
}
diff --git a/arch/arm/nwfpe/softfloat.c b/arch/arm/nwfpe/softfloat.c
index f9f0491..0f9656e 100644
--- a/arch/arm/nwfpe/softfloat.c
+++ b/arch/arm/nwfpe/softfloat.c
@@ -531,6 +531,7 @@
z.low = zSig;
z.high = ( ( (bits16) zSign )<<15 ) + zExp;
+ z.__padding = 0;
return z;
}
@@ -2831,6 +2832,7 @@
roundData->exception |= float_flag_invalid;
z.low = floatx80_default_nan_low;
z.high = floatx80_default_nan_high;
+ z.__padding = 0;
return z;
}
if ( aExp == 0 ) {
@@ -2950,6 +2952,7 @@
roundData->exception |= float_flag_invalid;
z.low = floatx80_default_nan_low;
z.high = floatx80_default_nan_high;
+ z.__padding = 0;
return z;
}
return packFloatx80( zSign, 0x7FFF, LIT64( 0x8000000000000000 ) );
@@ -3015,6 +3018,7 @@
roundData->exception |= float_flag_invalid;
z.low = floatx80_default_nan_low;
z.high = floatx80_default_nan_high;
+ z.__padding = 0;
return z;
}
roundData->exception |= float_flag_divbyzero;
@@ -3093,6 +3097,7 @@
roundData->exception |= float_flag_invalid;
z.low = floatx80_default_nan_low;
z.high = floatx80_default_nan_high;
+ z.__padding = 0;
return z;
}
normalizeFloatx80Subnormal( bSig, &bExp, &bSig );
@@ -3184,6 +3189,7 @@
roundData->exception |= float_flag_invalid;
z.low = floatx80_default_nan_low;
z.high = floatx80_default_nan_high;
+ z.__padding = 0;
return z;
}
if ( aExp == 0 ) {
diff --git a/arch/arm/nwfpe/softfloat.h b/arch/arm/nwfpe/softfloat.h
index 1415170..978c699 100644
--- a/arch/arm/nwfpe/softfloat.h
+++ b/arch/arm/nwfpe/softfloat.h
@@ -51,11 +51,17 @@
Software IEC/IEEE floating-point types.
-------------------------------------------------------------------------------
*/
-typedef unsigned long int float32;
-typedef unsigned long long float64;
+typedef u32 float32;
+typedef u64 float64;
typedef struct {
- unsigned short high;
- unsigned long long low;
+#ifdef __ARMEB__
+ u16 __padding;
+ u16 high;
+#else
+ u16 high;
+ u16 __padding;
+#endif
+ u64 low;
} floatx80;
/*
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index caa9f77..871366b 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -377,10 +377,9 @@
arg0.buffer.length = 12;
arg0.buffer.pointer = (u8 *) arg0_buf;
- data = kmalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
+ data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
if (!data)
return (-ENOMEM);
- memset(data, 0, sizeof(struct cpufreq_acpi_io));
acpi_io_data[cpu] = data;
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c
index 73a5dc5..edcd626 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c
@@ -171,10 +171,9 @@
unsigned int speed;
u8 fid, vid;
- powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL);
+ powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL);
if (!powernow_table)
return -ENOMEM;
- memset(powernow_table, 0, (sizeof(struct cpufreq_frequency_table) * (number_scales + 1)));
for (j=0 ; j < number_scales; j++) {
fid = *pst++;
@@ -305,16 +304,13 @@
goto err0;
}
- acpi_processor_perf = kmalloc(sizeof(struct acpi_processor_performance),
+ acpi_processor_perf = kzalloc(sizeof(struct acpi_processor_performance),
GFP_KERNEL);
-
if (!acpi_processor_perf) {
retval = -ENOMEM;
goto err0;
}
- memset(acpi_processor_perf, 0, sizeof(struct acpi_processor_performance));
-
if (acpi_processor_register_performance(acpi_processor_perf, 0)) {
retval = -EIO;
goto err1;
@@ -337,14 +333,12 @@
goto err2;
}
- powernow_table = kmalloc((number_scales + 1) * (sizeof(struct cpufreq_frequency_table)), GFP_KERNEL);
+ powernow_table = kzalloc((number_scales + 1) * (sizeof(struct cpufreq_frequency_table)), GFP_KERNEL);
if (!powernow_table) {
retval = -ENOMEM;
goto err2;
}
- memset(powernow_table, 0, ((number_scales + 1) * sizeof(struct cpufreq_frequency_table)));
-
pc.val = (unsigned long) acpi_processor_perf->states[0].control;
for (i = 0; i < number_scales; i++) {
u8 fid, vid;
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
index 2d5c9ad..68a1fc8 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -462,7 +462,6 @@
oldmask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(cpu));
- schedule();
if (smp_processor_id() != cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", cpu);
@@ -497,9 +496,7 @@
out:
set_cpus_allowed(current, oldmask);
- schedule();
return rc;
-
}
static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst, u8 maxvid)
@@ -913,7 +910,6 @@
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(pol->cpu));
- schedule();
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu);
@@ -968,8 +964,6 @@
err_out:
set_cpus_allowed(current, oldmask);
- schedule();
-
return ret;
}
@@ -991,12 +985,11 @@
if (!check_supported_cpu(pol->cpu))
return -ENODEV;
- data = kmalloc(sizeof(struct powernow_k8_data), GFP_KERNEL);
+ data = kzalloc(sizeof(struct powernow_k8_data), GFP_KERNEL);
if (!data) {
printk(KERN_ERR PFX "unable to alloc powernow_k8_data");
return -ENOMEM;
}
- memset(data,0,sizeof(struct powernow_k8_data));
data->cpu = pol->cpu;
@@ -1026,7 +1019,6 @@
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(pol->cpu));
- schedule();
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu);
@@ -1045,7 +1037,6 @@
/* run on any CPU again */
set_cpus_allowed(current, oldmask);
- schedule();
pol->governor = CPUFREQ_DEFAULT_GOVERNOR;
pol->cpus = cpu_core_map[pol->cpu];
@@ -1080,7 +1071,6 @@
err_out:
set_cpus_allowed(current, oldmask);
- schedule();
powernow_k8_cpu_exit_acpi(data);
kfree(data);
@@ -1116,17 +1106,14 @@
set_cpus_allowed(current, oldmask);
return 0;
}
- preempt_disable();
-
+
if (query_current_values_with_pending_wait(data))
goto out;
khz = find_khz_freq_from_fid(data->currfid);
- out:
- preempt_enable_no_resched();
+out:
set_cpus_allowed(current, oldmask);
-
return khz;
}
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index 0ea010a..edb9873 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -423,12 +423,11 @@
}
}
- centrino_model[cpu] = kmalloc(sizeof(struct cpu_model), GFP_KERNEL);
+ centrino_model[cpu] = kzalloc(sizeof(struct cpu_model), GFP_KERNEL);
if (!centrino_model[cpu]) {
result = -ENOMEM;
goto err_unreg;
}
- memset(centrino_model[cpu], 0, sizeof(struct cpu_model));
centrino_model[cpu]->model_name=NULL;
centrino_model[cpu]->max_freq = p.states[0].core_frequency * 1000;
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 9f2093c..d4de8a4 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -191,6 +191,7 @@
config IA64_SGI_SN_XP
tristate "Support communication between SGI SSIs"
+ depends on IA64_GENERIC || IA64_SGI_SN2
select IA64_UNCACHED_ALLOCATOR
help
An SGI machine can be divided into multiple Single System
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 6537445..3cfb8be 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -201,6 +201,14 @@
Only choose N if you know in advance that you will not need to modify
OpenPROM settings on the running system.
+config SPARC_LED
+ tristate "Sun4m LED driver"
+ help
+ This driver toggles the front-panel LED on sun4m systems
+ in a user-specifyable manner. It's state can be probed
+ by reading /proc/led and it's blinking mode can be changed
+ via writes to /proc/led
+
source "fs/Kconfig.binfmt"
config SUNOS_EMUL
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 3d22ba2..1b83e21 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -21,6 +21,7 @@
obj-$(CONFIG_PCI) += ebus.o
obj-$(CONFIG_SUN_PM) += apc.o pmc.o
obj-$(CONFIG_MODULES) += module.o sparc_ksyms.o
+obj-$(CONFIG_SPARC_LED) += led.o
ifdef CONFIG_SUNOS_EMUL
obj-y += sys_sunos.o sunos_ioctl.o
diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c
new file mode 100644
index 0000000..2a3afca
--- /dev/null
+++ b/arch/sparc/kernel/led.c
@@ -0,0 +1,139 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/string.h>
+
+#include <asm/auxio.h>
+
+#define LED_MAX_LENGTH 8 /* maximum chars written to proc file */
+
+static inline void led_toggle(void)
+{
+ unsigned char val = get_auxio();
+ unsigned char on, off;
+
+ if (val & AUXIO_LED) {
+ on = 0;
+ off = AUXIO_LED;
+ } else {
+ on = AUXIO_LED;
+ off = 0;
+ }
+
+ set_auxio(on, off);
+}
+
+static struct timer_list led_blink_timer;
+
+static void led_blink(unsigned long timeout)
+{
+ led_toggle();
+
+ /* reschedule */
+ if (!timeout) { /* blink according to load */
+ led_blink_timer.expires = jiffies +
+ ((1 + (avenrun[0] >> FSHIFT)) * HZ);
+ led_blink_timer.data = 0;
+ } else { /* blink at user specified interval */
+ led_blink_timer.expires = jiffies + (timeout * HZ);
+ led_blink_timer.data = timeout;
+ }
+ add_timer(&led_blink_timer);
+}
+
+static int led_read_proc(char *buf, char **start, off_t offset, int count,
+ int *eof, void *data)
+{
+ int len = 0;
+
+ if (get_auxio() & AUXIO_LED)
+ len = sprintf(buf, "on\n");
+ else
+ len = sprintf(buf, "off\n");
+
+ return len;
+}
+
+static int led_write_proc(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ char *buf = NULL;
+
+ if (count > LED_MAX_LENGTH)
+ count = LED_MAX_LENGTH;
+
+ buf = kmalloc(sizeof(char) * (count + 1), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (copy_from_user(buf, buffer, count)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+
+ buf[count] = '\0';
+
+ /* work around \n when echo'ing into proc */
+ if (buf[count - 1] == '\n')
+ buf[count - 1] = '\0';
+
+ /* before we change anything we want to stop any running timers,
+ * otherwise calls such as on will have no persistent effect
+ */
+ del_timer_sync(&led_blink_timer);
+
+ if (!strcmp(buf, "on")) {
+ auxio_set_led(AUXIO_LED_ON);
+ } else if (!strcmp(buf, "toggle")) {
+ led_toggle();
+ } else if ((*buf > '0') && (*buf <= '9')) {
+ led_blink(simple_strtoul(buf, NULL, 10));
+ } else if (!strcmp(buf, "load")) {
+ led_blink(0);
+ } else {
+ auxio_set_led(AUXIO_LED_OFF);
+ }
+
+ kfree(buf);
+
+ return count;
+}
+
+static struct proc_dir_entry *led;
+
+#define LED_VERSION "0.1"
+
+static int __init led_init(void)
+{
+ init_timer(&led_blink_timer);
+ led_blink_timer.function = led_blink;
+
+ led = create_proc_entry("led", 0, NULL);
+ if (!led)
+ return -ENOMEM;
+
+ led->read_proc = led_read_proc; /* reader function */
+ led->write_proc = led_write_proc; /* writer function */
+ led->owner = THIS_MODULE;
+
+ printk(KERN_INFO
+ "led: version %s, Lars Kotthoff <metalhead@metalhead.ws>\n",
+ LED_VERSION);
+
+ return 0;
+}
+
+static void __exit led_exit(void)
+{
+ remove_proc_entry("led", NULL);
+ del_timer_sync(&led_blink_timer);
+}
+
+module_init(led_init);
+module_exit(led_exit);
+
+MODULE_AUTHOR("Lars Kotthoff <metalhead@metalhead.ws>");
+MODULE_DESCRIPTION("Provides control of the front LED on SPARC systems.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(LED_VERSION);
diff --git a/arch/sparc/kernel/sunos_ioctl.c b/arch/sparc/kernel/sunos_ioctl.c
index df1c0b3..a6ba3d2 100644
--- a/arch/sparc/kernel/sunos_ioctl.c
+++ b/arch/sparc/kernel/sunos_ioctl.c
@@ -23,7 +23,6 @@
#include <linux/smp_lock.h>
#include <linux/syscalls.h>
#include <linux/file.h>
-#include <asm/kbio.h>
#if 0
extern char sunkbd_type;
diff --git a/arch/sparc64/kernel/ioctl32.c b/arch/sparc64/kernel/ioctl32.c
index e6a0032..92e2630 100644
--- a/arch/sparc64/kernel/ioctl32.c
+++ b/arch/sparc64/kernel/ioctl32.c
@@ -11,33 +11,14 @@
#define INCLUDES
#include "compat_ioctl.c"
-#include <linux/ncp_fs.h>
#include <linux/syscalls.h>
#include <asm/fbio.h>
-#include <asm/kbio.h>
-#include <asm/vuid_event.h>
-#include <asm/envctrl.h>
-#include <asm/display7seg.h>
-#include <asm/openpromio.h>
-#include <asm/audioio.h>
-#include <asm/watchdog.h>
/* Use this to get at 32-bit user passed pointers.
* See sys_sparc32.c for description about it.
*/
#define A(__x) compat_ptr(__x)
-static __inline__ void *alloc_user_space(long len)
-{
- struct pt_regs *regs = current_thread_info()->kregs;
- unsigned long usp = regs->u_regs[UREG_I6];
-
- if (!(test_thread_flag(TIF_32BIT)))
- usp += STACK_BIAS;
-
- return (void *) (usp - len);
-}
-
#define CODE
#include "compat_ioctl.c"
@@ -111,357 +92,6 @@
return sys_ioctl (fd, FBIOSCURSOR, (unsigned long)p);
}
-#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
-/* This really belongs in include/linux/drm.h -DaveM */
-#include "../../../drivers/char/drm/drm.h"
-
-typedef struct drm32_version {
- int version_major; /* Major version */
- int version_minor; /* Minor version */
- int version_patchlevel;/* Patch level */
- int name_len; /* Length of name buffer */
- u32 name; /* Name of driver */
- int date_len; /* Length of date buffer */
- u32 date; /* User-space buffer to hold date */
- int desc_len; /* Length of desc buffer */
- u32 desc; /* User-space buffer to hold desc */
-} drm32_version_t;
-#define DRM32_IOCTL_VERSION DRM_IOWR(0x00, drm32_version_t)
-
-static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_version_t __user *uversion = (drm32_version_t __user *)arg;
- drm_version_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
- int ret;
-
- if (clear_user(p, 3 * sizeof(int)) ||
- get_user(n, &uversion->name_len) ||
- put_user(n, &p->name_len) ||
- get_user(addr, &uversion->name) ||
- put_user(compat_ptr(addr), &p->name) ||
- get_user(n, &uversion->date_len) ||
- put_user(n, &p->date_len) ||
- get_user(addr, &uversion->date) ||
- put_user(compat_ptr(addr), &p->date) ||
- get_user(n, &uversion->desc_len) ||
- put_user(n, &p->desc_len) ||
- get_user(addr, &uversion->desc) ||
- put_user(compat_ptr(addr), &p->desc))
- return -EFAULT;
-
- ret = sys_ioctl(fd, DRM_IOCTL_VERSION, (unsigned long)p);
- if (ret)
- return ret;
-
- if (copy_in_user(uversion, p, 3 * sizeof(int)) ||
- get_user(n, &p->name_len) ||
- put_user(n, &uversion->name_len) ||
- get_user(n, &p->date_len) ||
- put_user(n, &uversion->date_len) ||
- get_user(n, &p->desc_len) ||
- put_user(n, &uversion->desc_len))
- return -EFAULT;
-
- return 0;
-}
-
-typedef struct drm32_unique {
- int unique_len; /* Length of unique */
- u32 unique; /* Unique name for driver instantiation */
-} drm32_unique_t;
-#define DRM32_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm32_unique_t)
-#define DRM32_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm32_unique_t)
-
-static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_unique_t __user *uarg = (drm32_unique_t __user *)arg;
- drm_unique_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
- int ret;
-
- if (get_user(n, &uarg->unique_len) ||
- put_user(n, &p->unique_len) ||
- get_user(addr, &uarg->unique) ||
- put_user(compat_ptr(addr), &p->unique))
- return -EFAULT;
-
- if (cmd == DRM32_IOCTL_GET_UNIQUE)
- ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)p);
- else
- ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)p);
-
- if (ret)
- return ret;
-
- if (get_user(n, &p->unique_len) || put_user(n, &uarg->unique_len))
- return -EFAULT;
-
- return 0;
-}
-
-typedef struct drm32_map {
- u32 offset; /* Requested physical address (0 for SAREA)*/
- u32 size; /* Requested physical size (bytes) */
- drm_map_type_t type; /* Type of memory to map */
- drm_map_flags_t flags; /* Flags */
- u32 handle; /* User-space: "Handle" to pass to mmap */
- /* Kernel-space: kernel-virtual address */
- int mtrr; /* MTRR slot used */
- /* Private data */
-} drm32_map_t;
-#define DRM32_IOCTL_ADD_MAP DRM_IOWR(0x15, drm32_map_t)
-
-static int drm32_addmap(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_map_t __user *uarg = (drm32_map_t __user *) arg;
- drm_map_t karg;
- mm_segment_t old_fs;
- u32 tmp;
- int ret;
-
- ret = get_user(karg.offset, &uarg->offset);
- ret |= get_user(karg.size, &uarg->size);
- ret |= get_user(karg.type, &uarg->type);
- ret |= get_user(karg.flags, &uarg->flags);
- ret |= get_user(tmp, &uarg->handle);
- ret |= get_user(karg.mtrr, &uarg->mtrr);
- if (ret)
- return -EFAULT;
-
- karg.handle = (void *) (unsigned long) tmp;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_ioctl(fd, DRM_IOCTL_ADD_MAP, (unsigned long) &karg);
- set_fs(old_fs);
-
- if (!ret) {
- ret = put_user(karg.offset, &uarg->offset);
- ret |= put_user(karg.size, &uarg->size);
- ret |= put_user(karg.type, &uarg->type);
- ret |= put_user(karg.flags, &uarg->flags);
- tmp = (u32) (long)karg.handle;
- ret |= put_user(tmp, &uarg->handle);
- ret |= put_user(karg.mtrr, &uarg->mtrr);
- if (ret)
- ret = -EFAULT;
- }
-
- return ret;
-}
-
-typedef struct drm32_buf_info {
- int count; /* Entries in list */
- u32 list; /* (drm_buf_desc_t *) */
-} drm32_buf_info_t;
-#define DRM32_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm32_buf_info_t)
-
-static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_buf_info_t __user *uarg = (drm32_buf_info_t __user *)arg;
- drm_buf_info_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
- int ret;
-
- if (get_user(n, &uarg->count) || put_user(n, &p->count) ||
- get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list))
- return -EFAULT;
-
- ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long)p);
- if (ret)
- return ret;
-
- if (get_user(n, &p->count) || put_user(n, &uarg->count))
- return -EFAULT;
-
- return 0;
-}
-
-typedef struct drm32_buf_free {
- int count;
- u32 list; /* (int *) */
-} drm32_buf_free_t;
-#define DRM32_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm32_buf_free_t)
-
-static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_buf_free_t __user *uarg = (drm32_buf_free_t __user *)arg;
- drm_buf_free_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int n;
-
- if (get_user(n, &uarg->count) || put_user(n, &p->count) ||
- get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list))
- return -EFAULT;
-
- return sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long)p);
-}
-
-typedef struct drm32_buf_pub {
- int idx; /* Index into master buflist */
- int total; /* Buffer size */
- int used; /* Amount of buffer in use (for DMA) */
- u32 address; /* Address of buffer (void *) */
-} drm32_buf_pub_t;
-
-typedef struct drm32_buf_map {
- int count; /* Length of buflist */
- u32 virtual; /* Mmaped area in user-virtual (void *) */
- u32 list; /* Buffer information (drm_buf_pub_t *) */
-} drm32_buf_map_t;
-#define DRM32_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm32_buf_map_t)
-
-static int drm32_map_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_buf_map_t __user *uarg = (drm32_buf_map_t __user *)arg;
- drm32_buf_pub_t __user *ulist;
- drm_buf_map_t __user *arg64;
- drm_buf_pub_t __user *list;
- int orig_count, ret, i;
- int n;
- compat_uptr_t addr;
-
- if (get_user(orig_count, &uarg->count))
- return -EFAULT;
-
- arg64 = compat_alloc_user_space(sizeof(drm_buf_map_t) +
- (size_t)orig_count * sizeof(drm_buf_pub_t));
- list = (void __user *)(arg64 + 1);
-
- if (put_user(orig_count, &arg64->count) ||
- put_user(list, &arg64->list) ||
- get_user(addr, &uarg->virtual) ||
- put_user(compat_ptr(addr), &arg64->virtual) ||
- get_user(addr, &uarg->list))
- return -EFAULT;
-
- ulist = compat_ptr(addr);
-
- for (i = 0; i < orig_count; i++) {
- if (get_user(n, &ulist[i].idx) ||
- put_user(n, &list[i].idx) ||
- get_user(n, &ulist[i].total) ||
- put_user(n, &list[i].total) ||
- get_user(n, &ulist[i].used) ||
- put_user(n, &list[i].used) ||
- get_user(addr, &ulist[i].address) ||
- put_user(compat_ptr(addr), &list[i].address))
- return -EFAULT;
- }
-
- ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) arg64);
- if (ret)
- return ret;
-
- for (i = 0; i < orig_count; i++) {
- void __user *p;
- if (get_user(n, &list[i].idx) ||
- put_user(n, &ulist[i].idx) ||
- get_user(n, &list[i].total) ||
- put_user(n, &ulist[i].total) ||
- get_user(n, &list[i].used) ||
- put_user(n, &ulist[i].used) ||
- get_user(p, &list[i].address) ||
- put_user((unsigned long)p, &ulist[i].address))
- return -EFAULT;
- }
-
- if (get_user(n, &arg64->count) || put_user(n, &uarg->count))
- return -EFAULT;
-
- return 0;
-}
-
-typedef struct drm32_dma {
- /* Indices here refer to the offset into
- buflist in drm_buf_get_t. */
- int context; /* Context handle */
- int send_count; /* Number of buffers to send */
- u32 send_indices; /* List of handles to buffers (int *) */
- u32 send_sizes; /* Lengths of data to send (int *) */
- drm_dma_flags_t flags; /* Flags */
- int request_count; /* Number of buffers requested */
- int request_size; /* Desired size for buffers */
- u32 request_indices; /* Buffer information (int *) */
- u32 request_sizes; /* (int *) */
- int granted_count; /* Number of buffers granted */
-} drm32_dma_t;
-#define DRM32_IOCTL_DMA DRM_IOWR(0x29, drm32_dma_t)
-
-/* RED PEN The DRM layer blindly dereferences the send/request
- * index/size arrays even though they are userland
- * pointers. -DaveM
- */
-static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_dma_t __user *uarg = (drm32_dma_t __user *) arg;
- drm_dma_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int ret;
-
- if (copy_in_user(p, uarg, 2 * sizeof(int)) ||
- get_user(addr, &uarg->send_indices) ||
- put_user(compat_ptr(addr), &p->send_indices) ||
- get_user(addr, &uarg->send_sizes) ||
- put_user(compat_ptr(addr), &p->send_sizes) ||
- copy_in_user(&p->flags, &uarg->flags, sizeof(drm_dma_flags_t)) ||
- copy_in_user(&p->request_count, &uarg->request_count, sizeof(int))||
- copy_in_user(&p->request_size, &uarg->request_size, sizeof(int)) ||
- get_user(addr, &uarg->request_indices) ||
- put_user(compat_ptr(addr), &p->request_indices) ||
- get_user(addr, &uarg->request_sizes) ||
- put_user(compat_ptr(addr), &p->request_sizes) ||
- copy_in_user(&p->granted_count, &uarg->granted_count, sizeof(int)))
- return -EFAULT;
-
- ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long)p);
- if (ret)
- return ret;
-
- if (copy_in_user(uarg, p, 2 * sizeof(int)) ||
- copy_in_user(&uarg->flags, &p->flags, sizeof(drm_dma_flags_t)) ||
- copy_in_user(&uarg->request_count, &p->request_count, sizeof(int))||
- copy_in_user(&uarg->request_size, &p->request_size, sizeof(int)) ||
- copy_in_user(&uarg->granted_count, &p->granted_count, sizeof(int)))
- return -EFAULT;
-
- return 0;
-}
-
-typedef struct drm32_ctx_res {
- int count;
- u32 contexts; /* (drm_ctx_t *) */
-} drm32_ctx_res_t;
-#define DRM32_IOCTL_RES_CTX DRM_IOWR(0x26, drm32_ctx_res_t)
-
-static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- drm32_ctx_res_t __user *uarg = (drm32_ctx_res_t __user *) arg;
- drm_ctx_res_t __user *p = compat_alloc_user_space(sizeof(*p));
- compat_uptr_t addr;
- int ret;
-
- if (copy_in_user(p, uarg, sizeof(int)) ||
- get_user(addr, &uarg->contexts) ||
- put_user(compat_ptr(addr), &p->contexts))
- return -EFAULT;
-
- ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long)p);
- if (ret)
- return ret;
-
- if (copy_in_user(uarg, p, sizeof(int)))
- return -EFAULT;
-
- return 0;
-}
-
-#endif
-
typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *);
#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl)
@@ -485,103 +115,14 @@
COMPATIBLE_IOCTL(FBIOGCURPOS)
COMPATIBLE_IOCTL(FBIOGCURMAX)
/* Little k */
-COMPATIBLE_IOCTL(KIOCTYPE)
-COMPATIBLE_IOCTL(KIOCLAYOUT)
-COMPATIBLE_IOCTL(KIOCGTRANS)
-COMPATIBLE_IOCTL(KIOCTRANS)
-COMPATIBLE_IOCTL(KIOCCMD)
-COMPATIBLE_IOCTL(KIOCSDIRECT)
-COMPATIBLE_IOCTL(KIOCSLED)
-COMPATIBLE_IOCTL(KIOCGLED)
-COMPATIBLE_IOCTL(KIOCSRATE)
-COMPATIBLE_IOCTL(KIOCGRATE)
-COMPATIBLE_IOCTL(VUIDSFORMAT)
-COMPATIBLE_IOCTL(VUIDGFORMAT)
/* Little v, the video4linux ioctls */
COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */
-COMPATIBLE_IOCTL(ENVCTRL_RD_WARNING_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_SHUTDOWN_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_CPU_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_FAN_STATUS)
-COMPATIBLE_IOCTL(ENVCTRL_RD_VOLTAGE_STATUS)
-COMPATIBLE_IOCTL(ENVCTRL_RD_SCSI_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_ETHERNET_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_MTHRBD_TEMPERATURE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_CPU_VOLTAGE)
-COMPATIBLE_IOCTL(ENVCTRL_RD_GLOBALADDRESS)
-/* COMPATIBLE_IOCTL(D7SIOCRD) same value as ENVCTRL_RD_VOLTAGE_STATUS */
-COMPATIBLE_IOCTL(D7SIOCWR)
-COMPATIBLE_IOCTL(D7SIOCTM)
-/* OPENPROMIO, SunOS/Solaris only, the NetBSD one's have
- * embedded pointers in the arg which we'd need to clean up...
- */
-COMPATIBLE_IOCTL(OPROMGETOPT)
-COMPATIBLE_IOCTL(OPROMSETOPT)
-COMPATIBLE_IOCTL(OPROMNXTOPT)
-COMPATIBLE_IOCTL(OPROMSETOPT2)
-COMPATIBLE_IOCTL(OPROMNEXT)
-COMPATIBLE_IOCTL(OPROMCHILD)
-COMPATIBLE_IOCTL(OPROMGETPROP)
-COMPATIBLE_IOCTL(OPROMNXTPROP)
-COMPATIBLE_IOCTL(OPROMU2P)
-COMPATIBLE_IOCTL(OPROMGETCONS)
-COMPATIBLE_IOCTL(OPROMGETFBNAME)
-COMPATIBLE_IOCTL(OPROMGETBOOTARGS)
-COMPATIBLE_IOCTL(OPROMSETCUR)
-COMPATIBLE_IOCTL(OPROMPCI2NODE)
-COMPATIBLE_IOCTL(OPROMPATH2NODE)
-/* Big L */
-COMPATIBLE_IOCTL(LOOP_SET_STATUS64)
-COMPATIBLE_IOCTL(LOOP_GET_STATUS64)
-/* Big A */
-COMPATIBLE_IOCTL(AUDIO_GETINFO)
-COMPATIBLE_IOCTL(AUDIO_SETINFO)
-COMPATIBLE_IOCTL(AUDIO_DRAIN)
-COMPATIBLE_IOCTL(AUDIO_GETDEV)
-COMPATIBLE_IOCTL(AUDIO_GETDEV_SUNOS)
-COMPATIBLE_IOCTL(AUDIO_FLUSH)
-COMPATIBLE_IOCTL(AUTOFS_IOC_EXPIRE_MULTI)
-#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
-COMPATIBLE_IOCTL(DRM_IOCTL_GET_MAGIC)
-COMPATIBLE_IOCTL(DRM_IOCTL_IRQ_BUSID)
-COMPATIBLE_IOCTL(DRM_IOCTL_AUTH_MAGIC)
-COMPATIBLE_IOCTL(DRM_IOCTL_BLOCK)
-COMPATIBLE_IOCTL(DRM_IOCTL_UNBLOCK)
-COMPATIBLE_IOCTL(DRM_IOCTL_CONTROL)
-COMPATIBLE_IOCTL(DRM_IOCTL_ADD_BUFS)
-COMPATIBLE_IOCTL(DRM_IOCTL_MARK_BUFS)
-COMPATIBLE_IOCTL(DRM_IOCTL_ADD_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_RM_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_MOD_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_GET_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_SWITCH_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_NEW_CTX)
-COMPATIBLE_IOCTL(DRM_IOCTL_ADD_DRAW)
-COMPATIBLE_IOCTL(DRM_IOCTL_RM_DRAW)
-COMPATIBLE_IOCTL(DRM_IOCTL_LOCK)
-COMPATIBLE_IOCTL(DRM_IOCTL_UNLOCK)
-COMPATIBLE_IOCTL(DRM_IOCTL_FINISH)
-#endif /* DRM */
-COMPATIBLE_IOCTL(WIOCSTART)
-COMPATIBLE_IOCTL(WIOCSTOP)
-COMPATIBLE_IOCTL(WIOCGSTAT)
/* And these ioctls need translation */
/* Note SIOCRTMSG is no longer, so this is safe and * the user would have seen just an -EINVAL anyways. */
HANDLE_IOCTL(FBIOPUTCMAP32, fbiogetputcmap)
HANDLE_IOCTL(FBIOGETCMAP32, fbiogetputcmap)
HANDLE_IOCTL(FBIOSCURSOR32, fbiogscursor)
-#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
-HANDLE_IOCTL(DRM32_IOCTL_VERSION, drm32_version)
-HANDLE_IOCTL(DRM32_IOCTL_GET_UNIQUE, drm32_getsetunique)
-HANDLE_IOCTL(DRM32_IOCTL_SET_UNIQUE, drm32_getsetunique)
-HANDLE_IOCTL(DRM32_IOCTL_ADD_MAP, drm32_addmap)
-HANDLE_IOCTL(DRM32_IOCTL_INFO_BUFS, drm32_info_bufs)
-HANDLE_IOCTL(DRM32_IOCTL_FREE_BUFS, drm32_free_bufs)
-HANDLE_IOCTL(DRM32_IOCTL_MAP_BUFS, drm32_map_bufs)
-HANDLE_IOCTL(DRM32_IOCTL_DMA, drm32_dma)
-HANDLE_IOCTL(DRM32_IOCTL_RES_CTX, drm32_res_ctx)
-#endif /* DRM */
#if 0
HANDLE_IOCTL(RTC32_IRQP_READ, do_rtc_ioctl)
HANDLE_IOCTL(RTC32_IRQP_SET, do_rtc_ioctl)
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index c1f3423..bf1849d 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -154,6 +154,7 @@
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
+ pte_t pte;
for_each_process(p) {
mm = p->mm;
@@ -178,8 +179,9 @@
* being called from inside OBP.
*/
ptep = pte_offset_map(pmdp, va);
- if (pte_present(*ptep)) {
- tte = pte_val(*ptep);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ tte = pte_val(pte);
res = PROM_TRUE;
}
pte_unmap(ptep);
@@ -218,6 +220,7 @@
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
+ pte_t pte;
int error;
if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) {
@@ -240,8 +243,9 @@
* being called from inside OBP.
*/
ptep = pte_offset_kernel(pmdp, va);
- if (pte_present(*ptep)) {
- tte = pte_val(*ptep);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ tte = pte_val(pte);
res = PROM_TRUE;
}
goto done;
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index aecccd0..009a86e 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -863,6 +863,7 @@
pud_t *pudp = pud_offset(pgdp, address);
pmd_t *pmdp = pmd_offset(pudp, address);
pte_t *ptep;
+ pte_t pte;
regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
@@ -873,9 +874,10 @@
preempt_disable();
ptep = pte_offset_map(pmdp, address);
- if (pte_present(*ptep)) {
+ pte = *ptep;
+ if (pte_present(pte)) {
unsigned long page = (unsigned long)
- page_address(pte_page(*ptep));
+ page_address(pte_page(pte));
wmb();
__asm__ __volatile__("flush %0 + %1"
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index b137fd6..5d90ee9 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -839,43 +839,29 @@
* questionable (in theory the big win for threads is the massive sharing of
* address space state across processors).
*/
+
+/* This currently is only used by the hugetlb arch pre-fault
+ * hook on UltraSPARC-III+ and later when changing the pagesize
+ * bits of the context register for an address space.
+ */
void smp_flush_tlb_mm(struct mm_struct *mm)
{
- /*
- * This code is called from two places, dup_mmap and exit_mmap. In the
- * former case, we really need a flush. In the later case, the callers
- * are single threaded exec_mmap (really need a flush), multithreaded
- * exec_mmap case (do not need to flush, since the caller gets a new
- * context via activate_mm), and all other callers of mmput() whence
- * the flush can be optimized since the associated threads are dead and
- * the mm is being torn down (__exit_mm and other mmput callers) or the
- * owning thread is dissociating itself from the mm. The
- * (atomic_read(&mm->mm_users) == 0) check ensures real work is done
- * for single thread exec and dup_mmap cases. An alternate check might
- * have been (current->mm != mm).
- * Kanoj Sarcar
- */
- if (atomic_read(&mm->mm_users) == 0)
- return;
+ u32 ctx = CTX_HWBITS(mm->context);
+ int cpu = get_cpu();
- {
- u32 ctx = CTX_HWBITS(mm->context);
- int cpu = get_cpu();
-
- if (atomic_read(&mm->mm_users) == 1) {
- mm->cpu_vm_mask = cpumask_of_cpu(cpu);
- goto local_flush_and_out;
- }
-
- smp_cross_call_masked(&xcall_flush_tlb_mm,
- ctx, 0, 0,
- mm->cpu_vm_mask);
-
- local_flush_and_out:
- __flush_tlb_mm(ctx, SECONDARY_CONTEXT);
-
- put_cpu();
+ if (atomic_read(&mm->mm_users) == 1) {
+ mm->cpu_vm_mask = cpumask_of_cpu(cpu);
+ goto local_flush_and_out;
}
+
+ smp_cross_call_masked(&xcall_flush_tlb_mm,
+ ctx, 0, 0,
+ mm->cpu_vm_mask);
+
+local_flush_and_out:
+ __flush_tlb_mm(ctx, SECONDARY_CONTEXT);
+
+ put_cpu();
}
void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long *vaddrs)
@@ -883,34 +869,13 @@
u32 ctx = CTX_HWBITS(mm->context);
int cpu = get_cpu();
- if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1) {
+ if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1)
mm->cpu_vm_mask = cpumask_of_cpu(cpu);
- goto local_flush_and_out;
- } else {
- /* This optimization is not valid. Normally
- * we will be holding the page_table_lock, but
- * there is an exception which is copy_page_range()
- * when forking. The lock is held during the individual
- * page table updates in the parent, but not at the
- * top level, which is where we are invoked.
- */
- if (0) {
- cpumask_t this_cpu_mask = cpumask_of_cpu(cpu);
+ else
+ smp_cross_call_masked(&xcall_flush_tlb_pending,
+ ctx, nr, (unsigned long) vaddrs,
+ mm->cpu_vm_mask);
- /* By virtue of running under the mm->page_table_lock,
- * and mmu_context.h:switch_mm doing the same, the
- * following operation is safe.
- */
- if (cpus_equal(mm->cpu_vm_mask, this_cpu_mask))
- goto local_flush_and_out;
- }
- }
-
- smp_cross_call_masked(&xcall_flush_tlb_pending,
- ctx, nr, (unsigned long) vaddrs,
- mm->cpu_vm_mask);
-
-local_flush_and_out:
__flush_tlb_pending(ctx, nr, vaddrs);
put_cpu();
diff --git a/arch/sparc64/kernel/sunos_ioctl32.c b/arch/sparc64/kernel/sunos_ioctl32.c
index 7654b8a..3f619ea 100644
--- a/arch/sparc64/kernel/sunos_ioctl32.c
+++ b/arch/sparc64/kernel/sunos_ioctl32.c
@@ -24,7 +24,6 @@
#include <linux/smp_lock.h>
#include <linux/syscalls.h>
#include <linux/compat.h>
-#include <asm/kbio.h>
#define SUNOS_NR_OPEN 256
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 38c5525..459c8fb 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -60,17 +60,6 @@
static int set_rtc_mmss(unsigned long);
-static __init unsigned long dummy_get_tick(void)
-{
- return 0;
-}
-
-static __initdata struct sparc64_tick_ops dummy_tick_ops = {
- .get_tick = dummy_get_tick,
-};
-
-struct sparc64_tick_ops *tick_ops __read_mostly = &dummy_tick_ops;
-
#define TICK_PRIV_BIT (1UL << 63)
#ifdef CONFIG_SMP
@@ -200,6 +189,8 @@
.softint_mask = 1UL << 0,
};
+struct sparc64_tick_ops *tick_ops __read_mostly = &tick_operations;
+
static void stick_init_tick(unsigned long offset)
{
tick_disable_protection();
diff --git a/drivers/char/agp/ali-agp.c b/drivers/char/agp/ali-agp.c
index b02fc22..ba54b58 100644
--- a/drivers/char/agp/ali-agp.c
+++ b/drivers/char/agp/ali-agp.c
@@ -389,6 +389,7 @@
MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);
static struct pci_driver agp_ali_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-ali",
.id_table = agp_ali_pci_table,
.probe = agp_ali_probe,
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index 3a41672..40fcd88b2 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -94,19 +94,16 @@
int retval = 0;
int i;
- tables = kmalloc((nr_tables + 1) * sizeof(struct amd_page_map *),
- GFP_KERNEL);
+ tables = kzalloc((nr_tables + 1) * sizeof(struct amd_page_map *),GFP_KERNEL);
if (tables == NULL)
return -ENOMEM;
- memset (tables, 0, sizeof(struct amd_page_map *) * (nr_tables + 1));
for (i = 0; i < nr_tables; i++) {
- entry = kmalloc(sizeof(struct amd_page_map), GFP_KERNEL);
+ entry = kzalloc(sizeof(struct amd_page_map), GFP_KERNEL);
if (entry == NULL) {
retval = -ENOMEM;
break;
}
- memset (entry, 0, sizeof(struct amd_page_map));
tables[i] = entry;
retval = amd_create_page_map(entry);
if (retval != 0)
@@ -518,6 +515,7 @@
MODULE_DEVICE_TABLE(pci, agp_amdk7_pci_table);
static struct pci_driver agp_amdk7_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-amdk7",
.id_table = agp_amdk7_pci_table,
.probe = agp_amdk7_probe,
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 78ce98a..8f748fd 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -703,6 +703,7 @@
MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table);
static struct pci_driver agp_amd64_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-amd64",
.id_table = agp_amd64_pci_table,
.probe = agp_amd64_probe,
diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c
index 0b6e726..fbd4155 100644
--- a/drivers/char/agp/ati-agp.c
+++ b/drivers/char/agp/ati-agp.c
@@ -118,14 +118,12 @@
int retval = 0;
int i;
- tables = kmalloc((nr_tables + 1) * sizeof(ati_page_map *),
- GFP_KERNEL);
+ tables = kzalloc((nr_tables + 1) * sizeof(ati_page_map *),GFP_KERNEL);
if (tables == NULL)
return -ENOMEM;
- memset(tables, 0, sizeof(ati_page_map *) * (nr_tables + 1));
for (i = 0; i < nr_tables; i++) {
- entry = kmalloc(sizeof(ati_page_map), GFP_KERNEL);
+ entry = kzalloc(sizeof(ati_page_map), GFP_KERNEL);
if (entry == NULL) {
while (i>0) {
kfree (tables[i-1]);
@@ -136,7 +134,6 @@
retval = -ENOMEM;
break;
}
- memset(entry, 0, sizeof(ati_page_map));
tables[i] = entry;
retval = ati_create_page_map(entry);
if (retval != 0) break;
@@ -524,6 +521,7 @@
MODULE_DEVICE_TABLE(pci, agp_ati_pci_table);
static struct pci_driver agp_ati_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-ati",
.id_table = agp_ati_pci_table,
.probe = agp_ati_probe,
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index 82b43c5..73f333f 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -222,12 +222,12 @@
struct agp_bridge_data *agp_alloc_bridge(void)
{
- struct agp_bridge_data *bridge = kmalloc(sizeof(*bridge), GFP_KERNEL);
-
+ struct agp_bridge_data *bridge;
+
+ bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
if (!bridge)
return NULL;
- memset(bridge, 0, sizeof(*bridge));
atomic_set(&bridge->agp_in_use, 0);
atomic_set(&bridge->current_memory_agp, 0);
diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index ac19fdc..d41e0a6 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -219,7 +219,7 @@
efficeon_private.l1_table[index] = page;
- value = virt_to_gart(page) | pati | present | index;
+ value = virt_to_gart((unsigned long *)page) | pati | present | index;
pci_write_config_dword(agp_bridge->dev,
EFFICEON_ATTPAGE, value);
@@ -429,6 +429,7 @@
MODULE_DEVICE_TABLE(pci, agp_efficeon_pci_table);
static struct pci_driver agp_efficeon_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-efficeon",
.id_table = agp_efficeon_pci_table,
.probe = agp_efficeon_probe,
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 3dfb664..17f520c 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -189,13 +189,12 @@
struct agp_segment *user_seg;
size_t i;
- seg = kmalloc((sizeof(struct agp_segment_priv) * region->seg_count), GFP_KERNEL);
+ seg = kzalloc((sizeof(struct agp_segment_priv) * region->seg_count), GFP_KERNEL);
if (seg == NULL) {
kfree(region->seg_list);
region->seg_list = NULL;
return -ENOMEM;
}
- memset(seg, 0, (sizeof(struct agp_segment_priv) * region->seg_count));
user_seg = region->seg_list;
for (i = 0; i < region->seg_count; i++) {
@@ -332,14 +331,11 @@
{
struct agp_controller *controller;
- controller = kmalloc(sizeof(struct agp_controller), GFP_KERNEL);
-
+ controller = kzalloc(sizeof(struct agp_controller), GFP_KERNEL);
if (controller == NULL)
return NULL;
- memset(controller, 0, sizeof(struct agp_controller));
controller->pid = id;
-
return controller;
}
@@ -540,12 +536,10 @@
{
struct agp_client *new_client;
- new_client = kmalloc(sizeof(struct agp_client), GFP_KERNEL);
-
+ new_client = kzalloc(sizeof(struct agp_client), GFP_KERNEL);
if (new_client == NULL)
return NULL;
- memset(new_client, 0, sizeof(struct agp_client));
new_client->pid = id;
agp_insert_client(new_client);
return new_client;
@@ -709,11 +703,10 @@
if (minor != AGPGART_MINOR)
goto err_out;
- priv = kmalloc(sizeof(struct agp_file_private), GFP_KERNEL);
+ priv = kzalloc(sizeof(struct agp_file_private), GFP_KERNEL);
if (priv == NULL)
goto err_out_nomem;
- memset(priv, 0, sizeof(struct agp_file_private));
set_bit(AGP_FF_ALLOW_CLIENT, &priv->access_flags);
priv->my_pid = current->pid;
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index ac9da0c..c4a3871 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -105,12 +105,10 @@
{
struct agp_memory *new;
- new = kmalloc(sizeof(struct agp_memory), GFP_KERNEL);
-
+ new = kzalloc(sizeof(struct agp_memory), GFP_KERNEL);
if (new == NULL)
return NULL;
- memset(new, 0, sizeof(struct agp_memory));
new->key = agp_get_key();
if (new->key < 0) {
@@ -414,7 +412,8 @@
u32 tmp;
if (*requested_mode & AGP2_RESERVED_MASK) {
- printk(KERN_INFO PFX "reserved bits set in mode 0x%x. Fixed.\n", *requested_mode);
+ printk(KERN_INFO PFX "reserved bits set (%x) in mode 0x%x. Fixed.\n",
+ *requested_mode & AGP2_RESERVED_MASK, *requested_mode);
*requested_mode &= ~AGP2_RESERVED_MASK;
}
@@ -492,7 +491,8 @@
u32 tmp;
if (*requested_mode & AGP3_RESERVED_MASK) {
- printk(KERN_INFO PFX "reserved bits set in mode 0x%x. Fixed.\n", *requested_mode);
+ printk(KERN_INFO PFX "reserved bits set (%x) in mode 0x%x. Fixed.\n",
+ *requested_mode & AGP3_RESERVED_MASK, *requested_mode);
*requested_mode &= ~AGP3_RESERVED_MASK;
}
diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c
index a2d9e5e..58944cd 100644
--- a/drivers/char/agp/i460-agp.c
+++ b/drivers/char/agp/i460-agp.c
@@ -227,10 +227,9 @@
*/
if (I460_IO_PAGE_SHIFT > PAGE_SHIFT) {
size = current_size->num_entries * sizeof(i460.lp_desc[0]);
- i460.lp_desc = kmalloc(size, GFP_KERNEL);
+ i460.lp_desc = kzalloc(size, GFP_KERNEL);
if (!i460.lp_desc)
return -ENOMEM;
- memset(i460.lp_desc, 0, size);
}
return 0;
}
@@ -366,13 +365,12 @@
}
map_size = ((I460_KPAGES_PER_IOPAGE + BITS_PER_LONG - 1) & -BITS_PER_LONG)/8;
- lp->alloced_map = kmalloc(map_size, GFP_KERNEL);
+ lp->alloced_map = kzalloc(map_size, GFP_KERNEL);
if (!lp->alloced_map) {
free_pages((unsigned long) lpage, order);
printk(KERN_ERR PFX "Out of memory, we're in trouble...\n");
return -ENOMEM;
}
- memset(lp->alloced_map, 0, map_size);
lp->paddr = virt_to_gart(lpage);
lp->refcount = 0;
@@ -619,6 +617,7 @@
MODULE_DEVICE_TABLE(pci, agp_intel_i460_pci_table);
static struct pci_driver agp_intel_i460_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-intel-i460",
.id_table = agp_intel_i460_pci_table,
.probe = agp_intel_i460_probe,
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 1f7d415..bf4cc9f 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -1824,6 +1824,7 @@
MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
static struct pci_driver agp_intel_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-intel",
.id_table = agp_intel_pci_table,
.probe = agp_intel_probe,
diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c
index 80dafa3..3aed0c5 100644
--- a/drivers/char/agp/nvidia-agp.c
+++ b/drivers/char/agp/nvidia-agp.c
@@ -398,6 +398,7 @@
MODULE_DEVICE_TABLE(pci, agp_nvidia_pci_table);
static struct pci_driver agp_nvidia_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-nvidia",
.id_table = agp_nvidia_pci_table,
.probe = agp_nvidia_probe,
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
index 7957fc9..4df7734 100644
--- a/drivers/char/agp/sgi-agp.c
+++ b/drivers/char/agp/sgi-agp.c
@@ -289,6 +289,8 @@
j = 0;
list_for_each_entry(info, &tioca_list, ca_list) {
struct list_head *tmp;
+ if (list_empty(info->ca_devices))
+ continue;
list_for_each(tmp, info->ca_devices) {
u8 cap_ptr;
pdev = pci_dev_b(tmp);
diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c
index ebc0555..a701361 100644
--- a/drivers/char/agp/sis-agp.c
+++ b/drivers/char/agp/sis-agp.c
@@ -332,6 +332,7 @@
MODULE_DEVICE_TABLE(pci, agp_sis_pci_table);
static struct pci_driver agp_sis_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-sis",
.id_table = agp_sis_pci_table,
.probe = agp_sis_probe,
diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c
index 71ea59a..5a5392d 100644
--- a/drivers/char/agp/sworks-agp.c
+++ b/drivers/char/agp/sworks-agp.c
@@ -102,19 +102,17 @@
int retval = 0;
int i;
- tables = kmalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *),
+ tables = kzalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *),
GFP_KERNEL);
- if (tables == NULL) {
+ if (tables == NULL)
return -ENOMEM;
- }
- memset(tables, 0, sizeof(struct serverworks_page_map *) * (nr_tables + 1));
+
for (i = 0; i < nr_tables; i++) {
- entry = kmalloc(sizeof(struct serverworks_page_map), GFP_KERNEL);
+ entry = kzalloc(sizeof(struct serverworks_page_map), GFP_KERNEL);
if (entry == NULL) {
retval = -ENOMEM;
break;
}
- memset(entry, 0, sizeof(struct serverworks_page_map));
tables[i] = entry;
retval = serverworks_create_page_map(entry);
if (retval != 0) break;
@@ -244,13 +242,27 @@
*/
static void serverworks_tlbflush(struct agp_memory *temp)
{
+ unsigned long timeout;
+
writeb(1, serverworks_private.registers+SVWRKS_POSTFLUSH);
- while (readb(serverworks_private.registers+SVWRKS_POSTFLUSH) == 1)
+ timeout = jiffies + 3*HZ;
+ while (readb(serverworks_private.registers+SVWRKS_POSTFLUSH) == 1) {
cpu_relax();
+ if (time_after(jiffies, timeout)) {
+ printk(KERN_ERR PFX "TLB post flush took more than 3 seconds\n");
+ break;
+ }
+ }
writel(1, serverworks_private.registers+SVWRKS_DIRFLUSH);
- while(readl(serverworks_private.registers+SVWRKS_DIRFLUSH) == 1)
+ timeout = jiffies + 3*HZ;
+ while (readl(serverworks_private.registers+SVWRKS_DIRFLUSH) == 1) {
cpu_relax();
+ if (time_after(jiffies, timeout)) {
+ printk(KERN_ERR PFX "TLB Dir flush took more than 3 seconds\n");
+ break;
+ }
+ }
}
static int serverworks_configure(void)
@@ -533,6 +545,7 @@
MODULE_DEVICE_TABLE(pci, agp_serverworks_pci_table);
static struct pci_driver agp_serverworks_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-serverworks",
.id_table = agp_serverworks_pci_table,
.probe = agp_serverworks_probe,
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index c825531..183c50a 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -658,6 +658,7 @@
MODULE_DEVICE_TABLE(pci, agp_uninorth_pci_table);
static struct pci_driver agp_uninorth_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-uninorth",
.id_table = agp_uninorth_pci_table,
.probe = agp_uninorth_probe,
diff --git a/drivers/char/agp/via-agp.c b/drivers/char/agp/via-agp.c
index c847df5..5d9a137 100644
--- a/drivers/char/agp/via-agp.c
+++ b/drivers/char/agp/via-agp.c
@@ -518,6 +518,7 @@
static struct pci_driver agp_via_pci_driver = {
+ .owner = THIS_MODULE,
.name = "agpgart-via",
.id_table = agp_via_pci_table,
.probe = agp_via_probe,
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6c6121b..25acf47 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -593,12 +593,11 @@
goto module_out;
}
- policy = kmalloc(sizeof(struct cpufreq_policy), GFP_KERNEL);
+ policy = kzalloc(sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!policy) {
ret = -ENOMEM;
goto nomem_out;
}
- memset(policy, 0, sizeof(struct cpufreq_policy));
policy->cpu = cpu;
policy->cpus = cpumask_of_cpu(cpu);
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index c1fc9c6..1774111 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -48,7 +48,10 @@
* All times here are in uS.
*/
static unsigned int def_sampling_rate;
-#define MIN_SAMPLING_RATE (def_sampling_rate / 2)
+#define MIN_SAMPLING_RATE_RATIO (2)
+/* for correct statistics, we need at least 10 ticks between each measure */
+#define MIN_STAT_SAMPLING_RATE (MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
+#define MIN_SAMPLING_RATE (def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000)
#define DEF_SAMPLING_DOWN_FACTOR (1)
@@ -416,13 +419,16 @@
if (dbs_enable == 1) {
unsigned int latency;
/* policy latency is in nS. Convert it to uS first */
+ latency = policy->cpuinfo.transition_latency / 1000;
+ if (latency == 0)
+ latency = 1;
- latency = policy->cpuinfo.transition_latency;
- if (latency < 1000)
- latency = 1000;
-
- def_sampling_rate = (latency / 1000) *
+ def_sampling_rate = latency *
DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
+
+ if (def_sampling_rate < MIN_STAT_SAMPLING_RATE)
+ def_sampling_rate = MIN_STAT_SAMPLING_RATE;
+
dbs_tuners_ins.sampling_rate = def_sampling_rate;
dbs_tuners_ins.ignore_nice = 0;
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 3597f25..0bddb8e 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -193,11 +193,15 @@
unsigned int cpu = policy->cpu;
if (cpufreq_stats_table[cpu])
return -EBUSY;
- if ((stat = kmalloc(sizeof(struct cpufreq_stats), GFP_KERNEL)) == NULL)
+ if ((stat = kzalloc(sizeof(struct cpufreq_stats), GFP_KERNEL)) == NULL)
return -ENOMEM;
- memset(stat, 0, sizeof (struct cpufreq_stats));
data = cpufreq_cpu_get(cpu);
+ if (data == NULL) {
+ ret = -EINVAL;
+ goto error_get_fail;
+ }
+
if ((ret = sysfs_create_group(&data->kobj, &stats_attr_group)))
goto error_out;
@@ -217,12 +221,11 @@
alloc_size += count * count * sizeof(int);
#endif
stat->max_state = count;
- stat->time_in_state = kmalloc(alloc_size, GFP_KERNEL);
+ stat->time_in_state = kzalloc(alloc_size, GFP_KERNEL);
if (!stat->time_in_state) {
ret = -ENOMEM;
goto error_out;
}
- memset(stat->time_in_state, 0, alloc_size);
stat->freq_table = (unsigned int *)(stat->time_in_state + count);
#ifdef CONFIG_CPU_FREQ_STAT_DETAILS
@@ -245,6 +248,7 @@
return 0;
error_out:
cpufreq_cpu_put(data);
+error_get_fail:
kfree(stat);
cpufreq_stats_table[cpu] = NULL;
return ret;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index ceae379..da52839 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1263,7 +1263,7 @@
*/
int mmc_resume_host(struct mmc_host *host)
{
- mmc_detect_change(host, 0);
+ mmc_rescan(host);
return 0;
}
diff --git a/drivers/sbus/char/cpwatchdog.c b/drivers/sbus/char/cpwatchdog.c
index c82abeb..071ae24 100644
--- a/drivers/sbus/char/cpwatchdog.c
+++ b/drivers/sbus/char/cpwatchdog.c
@@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/timer.h>
+#include <linux/smp_lock.h>
#include <asm/irq.h>
#include <asm/ebus.h>
#include <asm/oplib.h>
@@ -394,6 +395,28 @@
return(0);
}
+static long wd_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ int rval = -ENOIOCTLCMD;
+
+ switch (cmd) {
+ /* solaris ioctls are specific to this driver */
+ case WIOCSTART:
+ case WIOCSTOP:
+ case WIOCGSTAT:
+ lock_kernel();
+ rval = wd_ioctl(file->f_dentry->d_inode, file, cmd, arg);
+ lock_kernel();
+ break;
+ /* everything else is handled by the generic compat layer */
+ default:
+ break;
+ }
+
+ return rval;
+}
+
static ssize_t wd_write(struct file *file,
const char __user *buf,
size_t count,
@@ -441,6 +464,7 @@
static struct file_operations wd_fops = {
.owner = THIS_MODULE,
.ioctl = wd_ioctl,
+ .compat_ioctl = wd_compat_ioctl,
.open = wd_open,
.write = wd_write,
.read = wd_read,
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 24ed589..39f5421 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/ioport.h> /* request_region */
+#include <linux/smp_lock.h>
#include <asm/atomic.h>
#include <asm/ebus.h> /* EBus device */
#include <asm/oplib.h> /* OpenProm Library */
@@ -114,22 +115,25 @@
return 0;
}
-static int d7s_ioctl(struct inode *inode, struct file *f,
- unsigned int cmd, unsigned long arg)
+static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
__u8 regs = readb(d7s_regs);
__u8 ireg = 0;
+ int error = 0
- if (D7S_MINOR != iminor(inode))
+ if (D7S_MINOR != iminor(file->f_dentry->d_inode))
return -ENODEV;
+ lock_kernel();
switch (cmd) {
case D7SIOCWR:
/* assign device register values
* we mask-out D7S_FLIP if in sol_compat mode
*/
- if (get_user(ireg, (int __user *) arg))
- return -EFAULT;
+ if (get_user(ireg, (int __user *) arg)) {
+ error = -EFAULT;
+ break;
+ }
if (0 != sol_compat) {
(regs & D7S_FLIP) ?
(ireg |= D7S_FLIP) : (ireg &= ~D7S_FLIP);
@@ -144,8 +148,10 @@
* This driver will not misinform you about the state
* of your hardware while in sol_compat mode
*/
- if (put_user(regs, (int __user *) arg))
- return -EFAULT;
+ if (put_user(regs, (int __user *) arg)) {
+ error = -EFAULT;
+ break;
+ }
break;
case D7SIOCTM:
@@ -155,15 +161,17 @@
writeb(regs, d7s_regs);
break;
};
+ lock_kernel();
- return 0;
+ return error;
}
static struct file_operations d7s_fops = {
- .owner = THIS_MODULE,
- .ioctl = d7s_ioctl,
- .open = d7s_open,
- .release = d7s_release,
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = d7s_ioctl,
+ .compat_ioctl = d7s_ioctl,
+ .open = d7s_open,
+ .release = d7s_release,
};
static struct miscdevice d7s_miscdev = { D7S_MINOR, D7S_DEVNAME, &d7s_fops };
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index ba56762..19e8edd 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -654,9 +654,8 @@
/* Function Description: Command what to read. Mapped to user ioctl().
* Return: Gives 0 for implemented commands, -EINVAL otherwise.
*/
-static int
-envctrl_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long
+envctrl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
char __user *infobuf;
@@ -715,11 +714,14 @@
}
static struct file_operations envctrl_fops = {
- .owner = THIS_MODULE,
- .read = envctrl_read,
- .ioctl = envctrl_ioctl,
- .open = envctrl_open,
- .release = envctrl_release,
+ .owner = THIS_MODULE,
+ .read = envctrl_read,
+ .unlocked_ioctl = envctrl_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = envctrl_ioctl,
+#endif
+ .open = envctrl_open,
+ .release = envctrl_release,
};
static struct miscdevice envctrl_dev = {
diff --git a/drivers/sbus/char/openprom.c b/drivers/sbus/char/openprom.c
index 58ed337..5028ac2 100644
--- a/drivers/sbus/char/openprom.c
+++ b/drivers/sbus/char/openprom.c
@@ -39,6 +39,7 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/miscdevice.h>
+#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <asm/oplib.h>
@@ -565,6 +566,38 @@
}
}
+static long openprom_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ long rval = -ENOTTY;
+
+ /*
+ * SunOS/Solaris only, the NetBSD one's have embedded pointers in
+ * the arg which we'd need to clean up...
+ */
+ switch (cmd) {
+ case OPROMGETOPT:
+ case OPROMSETOPT:
+ case OPROMNXTOPT:
+ case OPROMSETOPT2:
+ case OPROMNEXT:
+ case OPROMCHILD:
+ case OPROMGETPROP:
+ case OPROMNXTPROP:
+ case OPROMU2P:
+ case OPROMGETCONS:
+ case OPROMGETFBNAME:
+ case OPROMGETBOOTARGS:
+ case OPROMSETCUR:
+ case OPROMPCI2NODE:
+ case OPROMPATH2NODE:
+ lock_kernel();
+ rval = openprom_ioctl(file->f_dentry->d_inode, file, cmd, arg);
+ lock_kernel();
+ break;
+ }
+}
+
static int openprom_open(struct inode * inode, struct file * file)
{
DATA *data;
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index 656c0e8..f073853 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -1441,7 +1441,7 @@
* - initialize the serial port
* Return non-zero if we didn't find a serial port.
*/
-static int __init sunsu_console_setup(struct console *co, char *options)
+static int sunsu_console_setup(struct console *co, char *options)
{
struct uart_port *port;
int baud = 9600;
diff --git a/drivers/video/cg6.c b/drivers/video/cg6.c
index 3280bb9..414c440 100644
--- a/drivers/video/cg6.c
+++ b/drivers/video/cg6.c
@@ -653,12 +653,6 @@
sbus_writel(0, &fbc->clipminy);
sbus_writel(info->var.xres - 1, &fbc->clipmaxx);
sbus_writel(info->var.yres - 1, &fbc->clipmaxy);
-
- /* Disable cursor in Brooktree DAC. */
- sbus_writel(0x06 << 24, &par->bt->addr);
- tmp = sbus_readl(&par->bt->control);
- tmp &= ~(0x03 << 24);
- sbus_writel(tmp, &par->bt->control);
}
struct all_info {
diff --git a/fs/Makefile b/fs/Makefile
index 1972da1..4c26557 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -10,7 +10,7 @@
ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
seq_file.o xattr.o libfs.o fs-writeback.o mpage.o direct-io.o \
- ioprio.o
+ ioprio.o pnode.o
obj-$(CONFIG_INOTIFY) += inotify.o
obj-$(CONFIG_EPOLL) += eventpoll.o
diff --git a/fs/dquot.c b/fs/dquot.c
index afa06a8..05b6028 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -1321,13 +1321,11 @@
int cnt;
struct quota_info *dqopt = sb_dqopt(sb);
struct inode *toputinode[MAXQUOTAS];
- struct vfsmount *toputmnt[MAXQUOTAS];
/* We need to serialize quota_off() for device */
down(&dqopt->dqonoff_sem);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
toputinode[cnt] = NULL;
- toputmnt[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
if (!sb_has_quota_enabled(sb, cnt))
@@ -1348,9 +1346,7 @@
put_quota_format(dqopt->info[cnt].dqi_format);
toputinode[cnt] = dqopt->files[cnt];
- toputmnt[cnt] = dqopt->mnt[cnt];
dqopt->files[cnt] = NULL;
- dqopt->mnt[cnt] = NULL;
dqopt->info[cnt].dqi_flags = 0;
dqopt->info[cnt].dqi_igrace = 0;
dqopt->info[cnt].dqi_bgrace = 0;
@@ -1358,10 +1354,7 @@
}
up(&dqopt->dqonoff_sem);
/* Sync the superblock so that buffers with quota data are written to
- * disk (and so userspace sees correct data afterwards).
- * The reference to vfsmnt we are still holding protects us from
- * umount (we don't have it only when quotas are turned on/off for
- * journal replay but in that case we are guarded by the fs anyway). */
+ * disk (and so userspace sees correct data afterwards). */
if (sb->s_op->sync_fs)
sb->s_op->sync_fs(sb, 1);
sync_blockdev(sb->s_bdev);
@@ -1385,10 +1378,6 @@
iput(toputinode[cnt]);
}
up(&dqopt->dqonoff_sem);
- /* We don't hold the reference when we turned on quotas
- * just for the journal replay... */
- if (toputmnt[cnt])
- mntput(toputmnt[cnt]);
}
if (sb->s_bdev)
invalidate_bdev(sb->s_bdev, 0);
@@ -1503,11 +1492,8 @@
/* Quota file not on the same filesystem? */
if (nd.mnt->mnt_sb != sb)
error = -EXDEV;
- else {
+ else
error = vfs_quota_on_inode(nd.dentry->d_inode, type, format_id);
- if (!error)
- sb_dqopt(sb)->mnt[type] = mntget(nd.mnt);
- }
out_path:
path_release(&nd);
return error;
diff --git a/fs/namespace.c b/fs/namespace.c
index 2fa9fdf..caa9187 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -24,6 +24,7 @@
#include <linux/mount.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
+#include "pnode.h"
extern int __init init_rootfs(void);
@@ -37,33 +38,39 @@
#endif
/* spinlock for vfsmount related operations, inplace of dcache_lock */
- __cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock);
+__cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock);
+
+static int event;
static struct list_head *mount_hashtable;
static int hash_mask __read_mostly, hash_bits __read_mostly;
-static kmem_cache_t *mnt_cache;
+static kmem_cache_t *mnt_cache;
+static struct rw_semaphore namespace_sem;
static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry)
{
- unsigned long tmp = ((unsigned long) mnt / L1_CACHE_BYTES);
- tmp += ((unsigned long) dentry / L1_CACHE_BYTES);
+ unsigned long tmp = ((unsigned long)mnt / L1_CACHE_BYTES);
+ tmp += ((unsigned long)dentry / L1_CACHE_BYTES);
tmp = tmp + (tmp >> hash_bits);
return tmp & hash_mask;
}
struct vfsmount *alloc_vfsmnt(const char *name)
{
- struct vfsmount *mnt = kmem_cache_alloc(mnt_cache, GFP_KERNEL);
+ struct vfsmount *mnt = kmem_cache_alloc(mnt_cache, GFP_KERNEL);
if (mnt) {
memset(mnt, 0, sizeof(struct vfsmount));
- atomic_set(&mnt->mnt_count,1);
+ atomic_set(&mnt->mnt_count, 1);
INIT_LIST_HEAD(&mnt->mnt_hash);
INIT_LIST_HEAD(&mnt->mnt_child);
INIT_LIST_HEAD(&mnt->mnt_mounts);
INIT_LIST_HEAD(&mnt->mnt_list);
INIT_LIST_HEAD(&mnt->mnt_expire);
+ INIT_LIST_HEAD(&mnt->mnt_share);
+ INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ INIT_LIST_HEAD(&mnt->mnt_slave);
if (name) {
- int size = strlen(name)+1;
+ int size = strlen(name) + 1;
char *newname = kmalloc(size, GFP_KERNEL);
if (newname) {
memcpy(newname, name, size);
@@ -81,36 +88,65 @@
}
/*
- * Now, lookup_mnt increments the ref count before returning
- * the vfsmount struct.
+ * find the first or last mount at @dentry on vfsmount @mnt depending on
+ * @dir. If @dir is set return the first mount else return the last mount.
*/
-struct vfsmount *lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)
+struct vfsmount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry,
+ int dir)
{
- struct list_head * head = mount_hashtable + hash(mnt, dentry);
- struct list_head * tmp = head;
+ struct list_head *head = mount_hashtable + hash(mnt, dentry);
+ struct list_head *tmp = head;
struct vfsmount *p, *found = NULL;
- spin_lock(&vfsmount_lock);
for (;;) {
- tmp = tmp->next;
+ tmp = dir ? tmp->next : tmp->prev;
p = NULL;
if (tmp == head)
break;
p = list_entry(tmp, struct vfsmount, mnt_hash);
if (p->mnt_parent == mnt && p->mnt_mountpoint == dentry) {
- found = mntget(p);
+ found = p;
break;
}
}
- spin_unlock(&vfsmount_lock);
return found;
}
+/*
+ * lookup_mnt increments the ref count before returning
+ * the vfsmount struct.
+ */
+struct vfsmount *lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)
+{
+ struct vfsmount *child_mnt;
+ spin_lock(&vfsmount_lock);
+ if ((child_mnt = __lookup_mnt(mnt, dentry, 1)))
+ mntget(child_mnt);
+ spin_unlock(&vfsmount_lock);
+ return child_mnt;
+}
+
static inline int check_mnt(struct vfsmount *mnt)
{
return mnt->mnt_namespace == current->namespace;
}
+static void touch_namespace(struct namespace *ns)
+{
+ if (ns) {
+ ns->event = ++event;
+ wake_up_interruptible(&ns->poll);
+ }
+}
+
+static void __touch_namespace(struct namespace *ns)
+{
+ if (ns && ns->event != event) {
+ ns->event = event;
+ wake_up_interruptible(&ns->poll);
+ }
+}
+
static void detach_mnt(struct vfsmount *mnt, struct nameidata *old_nd)
{
old_nd->dentry = mnt->mnt_mountpoint;
@@ -122,13 +158,43 @@
old_nd->dentry->d_mounted--;
}
+void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
+ struct vfsmount *child_mnt)
+{
+ child_mnt->mnt_parent = mntget(mnt);
+ child_mnt->mnt_mountpoint = dget(dentry);
+ dentry->d_mounted++;
+}
+
static void attach_mnt(struct vfsmount *mnt, struct nameidata *nd)
{
- mnt->mnt_parent = mntget(nd->mnt);
- mnt->mnt_mountpoint = dget(nd->dentry);
- list_add(&mnt->mnt_hash, mount_hashtable+hash(nd->mnt, nd->dentry));
+ mnt_set_mountpoint(nd->mnt, nd->dentry, mnt);
+ list_add_tail(&mnt->mnt_hash, mount_hashtable +
+ hash(nd->mnt, nd->dentry));
list_add_tail(&mnt->mnt_child, &nd->mnt->mnt_mounts);
- nd->dentry->d_mounted++;
+}
+
+/*
+ * the caller must hold vfsmount_lock
+ */
+static void commit_tree(struct vfsmount *mnt)
+{
+ struct vfsmount *parent = mnt->mnt_parent;
+ struct vfsmount *m;
+ LIST_HEAD(head);
+ struct namespace *n = parent->mnt_namespace;
+
+ BUG_ON(parent == mnt);
+
+ list_add_tail(&head, &mnt->mnt_list);
+ list_for_each_entry(m, &head, mnt_list)
+ m->mnt_namespace = n;
+ list_splice(&head, n->list.prev);
+
+ list_add_tail(&mnt->mnt_hash, mount_hashtable +
+ hash(parent, mnt->mnt_mountpoint));
+ list_add_tail(&mnt->mnt_child, &parent->mnt_mounts);
+ touch_namespace(n);
}
static struct vfsmount *next_mnt(struct vfsmount *p, struct vfsmount *root)
@@ -147,8 +213,18 @@
return list_entry(next, struct vfsmount, mnt_child);
}
-static struct vfsmount *
-clone_mnt(struct vfsmount *old, struct dentry *root)
+static struct vfsmount *skip_mnt_tree(struct vfsmount *p)
+{
+ struct list_head *prev = p->mnt_mounts.prev;
+ while (prev != &p->mnt_mounts) {
+ p = list_entry(prev, struct vfsmount, mnt_child);
+ prev = p->mnt_mounts.prev;
+ }
+ return p;
+}
+
+static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,
+ int flag)
{
struct super_block *sb = old->mnt_sb;
struct vfsmount *mnt = alloc_vfsmnt(old->mnt_devname);
@@ -160,19 +236,34 @@
mnt->mnt_root = dget(root);
mnt->mnt_mountpoint = mnt->mnt_root;
mnt->mnt_parent = mnt;
- mnt->mnt_namespace = current->namespace;
+
+ if (flag & CL_SLAVE) {
+ list_add(&mnt->mnt_slave, &old->mnt_slave_list);
+ mnt->mnt_master = old;
+ CLEAR_MNT_SHARED(mnt);
+ } else {
+ if ((flag & CL_PROPAGATION) || IS_MNT_SHARED(old))
+ list_add(&mnt->mnt_share, &old->mnt_share);
+ if (IS_MNT_SLAVE(old))
+ list_add(&mnt->mnt_slave, &old->mnt_slave);
+ mnt->mnt_master = old->mnt_master;
+ }
+ if (flag & CL_MAKE_SHARED)
+ set_mnt_shared(mnt);
/* stick the duplicate mount on the same expiry list
* as the original if that was on one */
- spin_lock(&vfsmount_lock);
- if (!list_empty(&old->mnt_expire))
- list_add(&mnt->mnt_expire, &old->mnt_expire);
- spin_unlock(&vfsmount_lock);
+ if (flag & CL_EXPIRE) {
+ spin_lock(&vfsmount_lock);
+ if (!list_empty(&old->mnt_expire))
+ list_add(&mnt->mnt_expire, &old->mnt_expire);
+ spin_unlock(&vfsmount_lock);
+ }
}
return mnt;
}
-void __mntput(struct vfsmount *mnt)
+static inline void __mntput(struct vfsmount *mnt)
{
struct super_block *sb = mnt->mnt_sb;
dput(mnt->mnt_root);
@@ -180,7 +271,46 @@
deactivate_super(sb);
}
-EXPORT_SYMBOL(__mntput);
+void mntput_no_expire(struct vfsmount *mnt)
+{
+repeat:
+ if (atomic_dec_and_lock(&mnt->mnt_count, &vfsmount_lock)) {
+ if (likely(!mnt->mnt_pinned)) {
+ spin_unlock(&vfsmount_lock);
+ __mntput(mnt);
+ return;
+ }
+ atomic_add(mnt->mnt_pinned + 1, &mnt->mnt_count);
+ mnt->mnt_pinned = 0;
+ spin_unlock(&vfsmount_lock);
+ acct_auto_close_mnt(mnt);
+ security_sb_umount_close(mnt);
+ goto repeat;
+ }
+}
+
+EXPORT_SYMBOL(mntput_no_expire);
+
+void mnt_pin(struct vfsmount *mnt)
+{
+ spin_lock(&vfsmount_lock);
+ mnt->mnt_pinned++;
+ spin_unlock(&vfsmount_lock);
+}
+
+EXPORT_SYMBOL(mnt_pin);
+
+void mnt_unpin(struct vfsmount *mnt)
+{
+ spin_lock(&vfsmount_lock);
+ if (mnt->mnt_pinned) {
+ atomic_inc(&mnt->mnt_count);
+ mnt->mnt_pinned--;
+ }
+ spin_unlock(&vfsmount_lock);
+}
+
+EXPORT_SYMBOL(mnt_unpin);
/* iterator */
static void *m_start(struct seq_file *m, loff_t *pos)
@@ -189,7 +319,7 @@
struct list_head *p;
loff_t l = *pos;
- down_read(&n->sem);
+ down_read(&namespace_sem);
list_for_each(p, &n->list)
if (!l--)
return list_entry(p, struct vfsmount, mnt_list);
@@ -201,13 +331,12 @@
struct namespace *n = m->private;
struct list_head *p = ((struct vfsmount *)v)->mnt_list.next;
(*pos)++;
- return p==&n->list ? NULL : list_entry(p, struct vfsmount, mnt_list);
+ return p == &n->list ? NULL : list_entry(p, struct vfsmount, mnt_list);
}
static void m_stop(struct seq_file *m, void *v)
{
- struct namespace *n = m->private;
- up_read(&n->sem);
+ up_read(&namespace_sem);
}
static inline void mangle(struct seq_file *m, const char *s)
@@ -275,35 +404,14 @@
*/
int may_umount_tree(struct vfsmount *mnt)
{
- struct list_head *next;
- struct vfsmount *this_parent = mnt;
- int actual_refs;
- int minimum_refs;
+ int actual_refs = 0;
+ int minimum_refs = 0;
+ struct vfsmount *p;
spin_lock(&vfsmount_lock);
- actual_refs = atomic_read(&mnt->mnt_count);
- minimum_refs = 2;
-repeat:
- next = this_parent->mnt_mounts.next;
-resume:
- while (next != &this_parent->mnt_mounts) {
- struct vfsmount *p = list_entry(next, struct vfsmount, mnt_child);
-
- next = next->next;
-
+ for (p = mnt; p; p = next_mnt(p, mnt)) {
actual_refs += atomic_read(&p->mnt_count);
minimum_refs += 2;
-
- if (!list_empty(&p->mnt_mounts)) {
- this_parent = p;
- goto repeat;
- }
- }
-
- if (this_parent != mnt) {
- next = this_parent->mnt_child.next;
- this_parent = this_parent->mnt_parent;
- goto resume;
}
spin_unlock(&vfsmount_lock);
@@ -330,45 +438,67 @@
*/
int may_umount(struct vfsmount *mnt)
{
- if (atomic_read(&mnt->mnt_count) > 2)
- return -EBUSY;
- return 0;
+ int ret = 0;
+ spin_lock(&vfsmount_lock);
+ if (propagate_mount_busy(mnt, 2))
+ ret = -EBUSY;
+ spin_unlock(&vfsmount_lock);
+ return ret;
}
EXPORT_SYMBOL(may_umount);
-static void umount_tree(struct vfsmount *mnt)
+void release_mounts(struct list_head *head)
{
- struct vfsmount *p;
- LIST_HEAD(kill);
-
- for (p = mnt; p; p = next_mnt(p, mnt)) {
- list_del(&p->mnt_list);
- list_add(&p->mnt_list, &kill);
- p->mnt_namespace = NULL;
- }
-
- while (!list_empty(&kill)) {
- mnt = list_entry(kill.next, struct vfsmount, mnt_list);
- list_del_init(&mnt->mnt_list);
- list_del_init(&mnt->mnt_expire);
- if (mnt->mnt_parent == mnt) {
+ struct vfsmount *mnt;
+ while(!list_empty(head)) {
+ mnt = list_entry(head->next, struct vfsmount, mnt_hash);
+ list_del_init(&mnt->mnt_hash);
+ if (mnt->mnt_parent != mnt) {
+ struct dentry *dentry;
+ struct vfsmount *m;
+ spin_lock(&vfsmount_lock);
+ dentry = mnt->mnt_mountpoint;
+ m = mnt->mnt_parent;
+ mnt->mnt_mountpoint = mnt->mnt_root;
+ mnt->mnt_parent = mnt;
spin_unlock(&vfsmount_lock);
- } else {
- struct nameidata old_nd;
- detach_mnt(mnt, &old_nd);
- spin_unlock(&vfsmount_lock);
- path_release(&old_nd);
+ dput(dentry);
+ mntput(m);
}
mntput(mnt);
- spin_lock(&vfsmount_lock);
+ }
+}
+
+void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
+{
+ struct vfsmount *p;
+
+ for (p = mnt; p; p = next_mnt(p, mnt)) {
+ list_del(&p->mnt_hash);
+ list_add(&p->mnt_hash, kill);
+ }
+
+ if (propagate)
+ propagate_umount(kill);
+
+ list_for_each_entry(p, kill, mnt_hash) {
+ list_del_init(&p->mnt_expire);
+ list_del_init(&p->mnt_list);
+ __touch_namespace(p->mnt_namespace);
+ p->mnt_namespace = NULL;
+ list_del_init(&p->mnt_child);
+ if (p->mnt_parent != p)
+ mnt->mnt_mountpoint->d_mounted--;
+ change_mnt_propagation(p, MS_PRIVATE);
}
}
static int do_umount(struct vfsmount *mnt, int flags)
{
- struct super_block * sb = mnt->mnt_sb;
+ struct super_block *sb = mnt->mnt_sb;
int retval;
+ LIST_HEAD(umount_list);
retval = security_sb_umount(mnt, flags);
if (retval)
@@ -403,7 +533,7 @@
*/
lock_kernel();
- if( (flags&MNT_FORCE) && sb->s_op->umount_begin)
+ if ((flags & MNT_FORCE) && sb->s_op->umount_begin)
sb->s_op->umount_begin(sb);
unlock_kernel();
@@ -432,29 +562,21 @@
return retval;
}
- down_write(¤t->namespace->sem);
+ down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
+ event++;
- if (atomic_read(&sb->s_active) == 1) {
- /* last instance - try to be smart */
- spin_unlock(&vfsmount_lock);
- lock_kernel();
- DQUOT_OFF(sb);
- acct_auto_close(sb);
- unlock_kernel();
- security_sb_umount_close(mnt);
- spin_lock(&vfsmount_lock);
- }
retval = -EBUSY;
- if (atomic_read(&mnt->mnt_count) == 2 || flags & MNT_DETACH) {
+ if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) {
if (!list_empty(&mnt->mnt_list))
- umount_tree(mnt);
+ umount_tree(mnt, 1, &umount_list);
retval = 0;
}
spin_unlock(&vfsmount_lock);
if (retval)
security_sb_umount_busy(mnt);
- up_write(¤t->namespace->sem);
+ up_write(&namespace_sem);
+ release_mounts(&umount_list);
return retval;
}
@@ -494,12 +616,11 @@
#ifdef __ARCH_WANT_SYS_OLDUMOUNT
/*
- * The 2.0 compatible umount. No flags.
+ * The 2.0 compatible umount. No flags.
*/
-
asmlinkage long sys_oldumount(char __user * name)
{
- return sys_umount(name,0);
+ return sys_umount(name, 0);
}
#endif
@@ -522,8 +643,7 @@
#endif
}
-static int
-lives_below_in_same_fs(struct dentry *d, struct dentry *dentry)
+static int lives_below_in_same_fs(struct dentry *d, struct dentry *dentry)
{
while (1) {
if (d == dentry)
@@ -534,12 +654,16 @@
}
}
-static struct vfsmount *copy_tree(struct vfsmount *mnt, struct dentry *dentry)
+struct vfsmount *copy_tree(struct vfsmount *mnt, struct dentry *dentry,
+ int flag)
{
struct vfsmount *res, *p, *q, *r, *s;
struct nameidata nd;
- res = q = clone_mnt(mnt, dentry);
+ if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(mnt))
+ return NULL;
+
+ res = q = clone_mnt(mnt, dentry, flag);
if (!q)
goto Enomem;
q->mnt_mountpoint = mnt->mnt_mountpoint;
@@ -550,6 +674,10 @@
continue;
for (s = r; s; s = next_mnt(s, r)) {
+ if (!(flag & CL_COPY_ALL) && IS_MNT_UNBINDABLE(s)) {
+ s = skip_mnt_tree(s);
+ continue;
+ }
while (p != s->mnt_parent) {
p = p->mnt_parent;
q = q->mnt_parent;
@@ -557,7 +685,7 @@
p = s;
nd.mnt = q;
nd.dentry = p->mnt_mountpoint;
- q = clone_mnt(p, p->mnt_root);
+ q = clone_mnt(p, p->mnt_root, flag);
if (!q)
goto Enomem;
spin_lock(&vfsmount_lock);
@@ -567,15 +695,114 @@
}
}
return res;
- Enomem:
+Enomem:
if (res) {
+ LIST_HEAD(umount_list);
spin_lock(&vfsmount_lock);
- umount_tree(res);
+ umount_tree(res, 0, &umount_list);
spin_unlock(&vfsmount_lock);
+ release_mounts(&umount_list);
}
return NULL;
}
+/*
+ * @source_mnt : mount tree to be attached
+ * @nd : place the mount tree @source_mnt is attached
+ * @parent_nd : if non-null, detach the source_mnt from its parent and
+ * store the parent mount and mountpoint dentry.
+ * (done when source_mnt is moved)
+ *
+ * NOTE: in the table below explains the semantics when a source mount
+ * of a given type is attached to a destination mount of a given type.
+ * ---------------------------------------------------------------------------
+ * | BIND MOUNT OPERATION |
+ * |**************************************************************************
+ * | source-->| shared | private | slave | unbindable |
+ * | dest | | | | |
+ * | | | | | | |
+ * | v | | | | |
+ * |**************************************************************************
+ * | shared | shared (++) | shared (+) | shared(+++)| invalid |
+ * | | | | | |
+ * |non-shared| shared (+) | private | slave (*) | invalid |
+ * ***************************************************************************
+ * A bind operation clones the source mount and mounts the clone on the
+ * destination mount.
+ *
+ * (++) the cloned mount is propagated to all the mounts in the propagation
+ * tree of the destination mount and the cloned mount is added to
+ * the peer group of the source mount.
+ * (+) the cloned mount is created under the destination mount and is marked
+ * as shared. The cloned mount is added to the peer group of the source
+ * mount.
+ * (+++) the mount is propagated to all the mounts in the propagation tree
+ * of the destination mount and the cloned mount is made slave
+ * of the same master as that of the source mount. The cloned mount
+ * is marked as 'shared and slave'.
+ * (*) the cloned mount is made a slave of the same master as that of the
+ * source mount.
+ *
+ * ---------------------------------------------------------------------------
+ * | MOVE MOUNT OPERATION |
+ * |**************************************************************************
+ * | source-->| shared | private | slave | unbindable |
+ * | dest | | | | |
+ * | | | | | | |
+ * | v | | | | |
+ * |**************************************************************************
+ * | shared | shared (+) | shared (+) | shared(+++) | invalid |
+ * | | | | | |
+ * |non-shared| shared (+*) | private | slave (*) | unbindable |
+ * ***************************************************************************
+ *
+ * (+) the mount is moved to the destination. And is then propagated to
+ * all the mounts in the propagation tree of the destination mount.
+ * (+*) the mount is moved to the destination.
+ * (+++) the mount is moved to the destination and is then propagated to
+ * all the mounts belonging to the destination mount's propagation tree.
+ * the mount is marked as 'shared and slave'.
+ * (*) the mount continues to be a slave at the new location.
+ *
+ * if the source mount is a tree, the operations explained above is
+ * applied to each mount in the tree.
+ * Must be called without spinlocks held, since this function can sleep
+ * in allocations.
+ */
+static int attach_recursive_mnt(struct vfsmount *source_mnt,
+ struct nameidata *nd, struct nameidata *parent_nd)
+{
+ LIST_HEAD(tree_list);
+ struct vfsmount *dest_mnt = nd->mnt;
+ struct dentry *dest_dentry = nd->dentry;
+ struct vfsmount *child, *p;
+
+ if (propagate_mnt(dest_mnt, dest_dentry, source_mnt, &tree_list))
+ return -EINVAL;
+
+ if (IS_MNT_SHARED(dest_mnt)) {
+ for (p = source_mnt; p; p = next_mnt(p, source_mnt))
+ set_mnt_shared(p);
+ }
+
+ spin_lock(&vfsmount_lock);
+ if (parent_nd) {
+ detach_mnt(source_mnt, parent_nd);
+ attach_mnt(source_mnt, nd);
+ touch_namespace(current->namespace);
+ } else {
+ mnt_set_mountpoint(dest_mnt, dest_dentry, source_mnt);
+ commit_tree(source_mnt);
+ }
+
+ list_for_each_entry_safe(child, p, &tree_list, mnt_hash) {
+ list_del_init(&child->mnt_hash);
+ commit_tree(child);
+ }
+ spin_unlock(&vfsmount_lock);
+ return 0;
+}
+
static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
{
int err;
@@ -596,17 +823,8 @@
goto out_unlock;
err = -ENOENT;
- spin_lock(&vfsmount_lock);
- if (IS_ROOT(nd->dentry) || !d_unhashed(nd->dentry)) {
- struct list_head head;
-
- attach_mnt(mnt, nd);
- list_add_tail(&head, &mnt->mnt_list);
- list_splice(&head, current->namespace->list.prev);
- mntget(mnt);
- err = 0;
- }
- spin_unlock(&vfsmount_lock);
+ if (IS_ROOT(nd->dentry) || !d_unhashed(nd->dentry))
+ err = attach_recursive_mnt(mnt, nd, NULL);
out_unlock:
up(&nd->dentry->d_inode->i_sem);
if (!err)
@@ -615,6 +833,27 @@
}
/*
+ * recursively change the type of the mountpoint.
+ */
+static int do_change_type(struct nameidata *nd, int flag)
+{
+ struct vfsmount *m, *mnt = nd->mnt;
+ int recurse = flag & MS_REC;
+ int type = flag & ~MS_REC;
+
+ if (nd->dentry != nd->mnt->mnt_root)
+ return -EINVAL;
+
+ down_write(&namespace_sem);
+ spin_lock(&vfsmount_lock);
+ for (m = mnt; m; m = (recurse ? next_mnt(m, mnt) : NULL))
+ change_mnt_propagation(m, type);
+ spin_unlock(&vfsmount_lock);
+ up_write(&namespace_sem);
+ return 0;
+}
+
+/*
* do loopback mount.
*/
static int do_loopback(struct nameidata *nd, char *old_name, int recurse)
@@ -630,32 +869,34 @@
if (err)
return err;
- down_write(¤t->namespace->sem);
+ down_write(&namespace_sem);
err = -EINVAL;
- if (check_mnt(nd->mnt) && (!recurse || check_mnt(old_nd.mnt))) {
- err = -ENOMEM;
- if (recurse)
- mnt = copy_tree(old_nd.mnt, old_nd.dentry);
- else
- mnt = clone_mnt(old_nd.mnt, old_nd.dentry);
- }
+ if (IS_MNT_UNBINDABLE(old_nd.mnt))
+ goto out;
- if (mnt) {
- /* stop bind mounts from expiring */
+ if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt))
+ goto out;
+
+ err = -ENOMEM;
+ if (recurse)
+ mnt = copy_tree(old_nd.mnt, old_nd.dentry, 0);
+ else
+ mnt = clone_mnt(old_nd.mnt, old_nd.dentry, 0);
+
+ if (!mnt)
+ goto out;
+
+ err = graft_tree(mnt, nd);
+ if (err) {
+ LIST_HEAD(umount_list);
spin_lock(&vfsmount_lock);
- list_del_init(&mnt->mnt_expire);
+ umount_tree(mnt, 0, &umount_list);
spin_unlock(&vfsmount_lock);
-
- err = graft_tree(mnt, nd);
- if (err) {
- spin_lock(&vfsmount_lock);
- umount_tree(mnt);
- spin_unlock(&vfsmount_lock);
- } else
- mntput(mnt);
+ release_mounts(&umount_list);
}
- up_write(¤t->namespace->sem);
+out:
+ up_write(&namespace_sem);
path_release(&old_nd);
return err;
}
@@ -665,12 +906,11 @@
* If you've mounted a non-root directory somewhere and want to do remount
* on it - tough luck.
*/
-
static int do_remount(struct nameidata *nd, int flags, int mnt_flags,
void *data)
{
int err;
- struct super_block * sb = nd->mnt->mnt_sb;
+ struct super_block *sb = nd->mnt->mnt_sb;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -684,13 +924,23 @@
down_write(&sb->s_umount);
err = do_remount_sb(sb, flags, data, 0);
if (!err)
- nd->mnt->mnt_flags=mnt_flags;
+ nd->mnt->mnt_flags = mnt_flags;
up_write(&sb->s_umount);
if (!err)
security_sb_post_remount(nd->mnt, flags, data);
return err;
}
+static inline int tree_contains_unbindable(struct vfsmount *mnt)
+{
+ struct vfsmount *p;
+ for (p = mnt; p; p = next_mnt(p, mnt)) {
+ if (IS_MNT_UNBINDABLE(p))
+ return 1;
+ }
+ return 0;
+}
+
static int do_move_mount(struct nameidata *nd, char *old_name)
{
struct nameidata old_nd, parent_nd;
@@ -704,8 +954,8 @@
if (err)
return err;
- down_write(¤t->namespace->sem);
- while(d_mountpoint(nd->dentry) && follow_down(&nd->mnt, &nd->dentry))
+ down_write(&namespace_sem);
+ while (d_mountpoint(nd->dentry) && follow_down(&nd->mnt, &nd->dentry))
;
err = -EINVAL;
if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt))
@@ -716,39 +966,47 @@
if (IS_DEADDIR(nd->dentry->d_inode))
goto out1;
- spin_lock(&vfsmount_lock);
if (!IS_ROOT(nd->dentry) && d_unhashed(nd->dentry))
- goto out2;
+ goto out1;
err = -EINVAL;
if (old_nd.dentry != old_nd.mnt->mnt_root)
- goto out2;
+ goto out1;
if (old_nd.mnt == old_nd.mnt->mnt_parent)
- goto out2;
+ goto out1;
if (S_ISDIR(nd->dentry->d_inode->i_mode) !=
S_ISDIR(old_nd.dentry->d_inode->i_mode))
- goto out2;
-
+ goto out1;
+ /*
+ * Don't move a mount residing in a shared parent.
+ */
+ if (old_nd.mnt->mnt_parent && IS_MNT_SHARED(old_nd.mnt->mnt_parent))
+ goto out1;
+ /*
+ * Don't move a mount tree containing unbindable mounts to a destination
+ * mount which is shared.
+ */
+ if (IS_MNT_SHARED(nd->mnt) && tree_contains_unbindable(old_nd.mnt))
+ goto out1;
err = -ELOOP;
- for (p = nd->mnt; p->mnt_parent!=p; p = p->mnt_parent)
+ for (p = nd->mnt; p->mnt_parent != p; p = p->mnt_parent)
if (p == old_nd.mnt)
- goto out2;
- err = 0;
+ goto out1;
- detach_mnt(old_nd.mnt, &parent_nd);
- attach_mnt(old_nd.mnt, nd);
+ if ((err = attach_recursive_mnt(old_nd.mnt, nd, &parent_nd)))
+ goto out1;
+ spin_lock(&vfsmount_lock);
/* if the mount is moved, it should no longer be expire
* automatically */
list_del_init(&old_nd.mnt->mnt_expire);
-out2:
spin_unlock(&vfsmount_lock);
out1:
up(&nd->dentry->d_inode->i_sem);
out:
- up_write(¤t->namespace->sem);
+ up_write(&namespace_sem);
if (!err)
path_release(&parent_nd);
path_release(&old_nd);
@@ -787,9 +1045,9 @@
{
int err;
- down_write(¤t->namespace->sem);
+ down_write(&namespace_sem);
/* Something was mounted here while we slept */
- while(d_mountpoint(nd->dentry) && follow_down(&nd->mnt, &nd->dentry))
+ while (d_mountpoint(nd->dentry) && follow_down(&nd->mnt, &nd->dentry))
;
err = -EINVAL;
if (!check_mnt(nd->mnt))
@@ -806,25 +1064,28 @@
goto unlock;
newmnt->mnt_flags = mnt_flags;
- newmnt->mnt_namespace = current->namespace;
- err = graft_tree(newmnt, nd);
+ if ((err = graft_tree(newmnt, nd)))
+ goto unlock;
- if (err == 0 && fslist) {
+ if (fslist) {
/* add to the specified expiration list */
spin_lock(&vfsmount_lock);
list_add_tail(&newmnt->mnt_expire, fslist);
spin_unlock(&vfsmount_lock);
}
+ up_write(&namespace_sem);
+ return 0;
unlock:
- up_write(¤t->namespace->sem);
+ up_write(&namespace_sem);
mntput(newmnt);
return err;
}
EXPORT_SYMBOL_GPL(do_add_mount);
-static void expire_mount(struct vfsmount *mnt, struct list_head *mounts)
+static void expire_mount(struct vfsmount *mnt, struct list_head *mounts,
+ struct list_head *umounts)
{
spin_lock(&vfsmount_lock);
@@ -841,27 +1102,13 @@
* Check that it is still dead: the count should now be 2 - as
* contributed by the vfsmount parent and the mntget above
*/
- if (atomic_read(&mnt->mnt_count) == 2) {
- struct nameidata old_nd;
-
+ if (!propagate_mount_busy(mnt, 2)) {
/* delete from the namespace */
+ touch_namespace(mnt->mnt_namespace);
list_del_init(&mnt->mnt_list);
mnt->mnt_namespace = NULL;
- detach_mnt(mnt, &old_nd);
+ umount_tree(mnt, 1, umounts);
spin_unlock(&vfsmount_lock);
- path_release(&old_nd);
-
- /*
- * Now lay it to rest if this was the last ref on the superblock
- */
- if (atomic_read(&mnt->mnt_sb->s_active) == 1) {
- /* last instance - try to be smart */
- lock_kernel();
- DQUOT_OFF(mnt->mnt_sb);
- acct_auto_close(mnt->mnt_sb);
- unlock_kernel();
- }
- mntput(mnt);
} else {
/*
* Someone brought it back to life whilst we didn't have any
@@ -910,6 +1157,7 @@
* - dispose of the corpse
*/
while (!list_empty(&graveyard)) {
+ LIST_HEAD(umounts);
mnt = list_entry(graveyard.next, struct vfsmount, mnt_expire);
list_del_init(&mnt->mnt_expire);
@@ -921,13 +1169,12 @@
get_namespace(namespace);
spin_unlock(&vfsmount_lock);
- down_write(&namespace->sem);
- expire_mount(mnt, mounts);
- up_write(&namespace->sem);
-
+ down_write(&namespace_sem);
+ expire_mount(mnt, mounts, &umounts);
+ up_write(&namespace_sem);
+ release_mounts(&umounts);
mntput(mnt);
put_namespace(namespace);
-
spin_lock(&vfsmount_lock);
}
@@ -942,8 +1189,8 @@
* Note that this function differs from copy_from_user() in that it will oops
* on bad values of `to', rather than returning a short copy.
*/
-static long
-exact_copy_from_user(void *to, const void __user *from, unsigned long n)
+static long exact_copy_from_user(void *to, const void __user * from,
+ unsigned long n)
{
char *t = to;
const char __user *f = from;
@@ -964,12 +1211,12 @@
return n;
}
-int copy_mount_options(const void __user *data, unsigned long *where)
+int copy_mount_options(const void __user * data, unsigned long *where)
{
int i;
unsigned long page;
unsigned long size;
-
+
*where = 0;
if (!data)
return 0;
@@ -988,7 +1235,7 @@
i = size - exact_copy_from_user((void *)page, data, size);
if (!i) {
- free_page(page);
+ free_page(page);
return -EFAULT;
}
if (i != PAGE_SIZE)
@@ -1011,7 +1258,7 @@
* Therefore, if this magic number is present, it carries no information
* and must be discarded.
*/
-long do_mount(char * dev_name, char * dir_name, char *type_page,
+long do_mount(char *dev_name, char *dir_name, char *type_page,
unsigned long flags, void *data_page)
{
struct nameidata nd;
@@ -1039,7 +1286,7 @@
mnt_flags |= MNT_NODEV;
if (flags & MS_NOEXEC)
mnt_flags |= MNT_NOEXEC;
- flags &= ~(MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_ACTIVE);
+ flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE);
/* ... and get the mountpoint */
retval = path_lookup(dir_name, LOOKUP_FOLLOW, &nd);
@@ -1055,6 +1302,8 @@
data_page);
else if (flags & MS_BIND)
retval = do_loopback(&nd, dev_name, flags & MS_REC);
+ else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
+ retval = do_change_type(&nd, flags);
else if (flags & MS_MOVE)
retval = do_move_mount(&nd, dev_name);
else
@@ -1091,14 +1340,16 @@
goto out;
atomic_set(&new_ns->count, 1);
- init_rwsem(&new_ns->sem);
INIT_LIST_HEAD(&new_ns->list);
+ init_waitqueue_head(&new_ns->poll);
+ new_ns->event = 0;
- down_write(&tsk->namespace->sem);
+ down_write(&namespace_sem);
/* First pass: copy the tree topology */
- new_ns->root = copy_tree(namespace->root, namespace->root->mnt_root);
+ new_ns->root = copy_tree(namespace->root, namespace->root->mnt_root,
+ CL_COPY_ALL | CL_EXPIRE);
if (!new_ns->root) {
- up_write(&tsk->namespace->sem);
+ up_write(&namespace_sem);
kfree(new_ns);
goto out;
}
@@ -1132,7 +1383,7 @@
p = next_mnt(p, namespace->root);
q = next_mnt(q, new_ns->root);
}
- up_write(&tsk->namespace->sem);
+ up_write(&namespace_sem);
tsk->namespace = new_ns;
@@ -1161,7 +1412,7 @@
unsigned long dev_page;
char *dir_page;
- retval = copy_mount_options (type, &type_page);
+ retval = copy_mount_options(type, &type_page);
if (retval < 0)
return retval;
@@ -1170,17 +1421,17 @@
if (IS_ERR(dir_page))
goto out1;
- retval = copy_mount_options (dev_name, &dev_page);
+ retval = copy_mount_options(dev_name, &dev_page);
if (retval < 0)
goto out2;
- retval = copy_mount_options (data, &data_page);
+ retval = copy_mount_options(data, &data_page);
if (retval < 0)
goto out3;
lock_kernel();
- retval = do_mount((char*)dev_page, dir_page, (char*)type_page,
- flags, (void*)data_page);
+ retval = do_mount((char *)dev_page, dir_page, (char *)type_page,
+ flags, (void *)data_page);
unlock_kernel();
free_page(data_page);
@@ -1249,9 +1500,11 @@
if (fs) {
atomic_inc(&fs->count);
task_unlock(p);
- if (fs->root==old_nd->dentry&&fs->rootmnt==old_nd->mnt)
+ if (fs->root == old_nd->dentry
+ && fs->rootmnt == old_nd->mnt)
set_fs_root(fs, new_nd->mnt, new_nd->dentry);
- if (fs->pwd==old_nd->dentry&&fs->pwdmnt==old_nd->mnt)
+ if (fs->pwd == old_nd->dentry
+ && fs->pwdmnt == old_nd->mnt)
set_fs_pwd(fs, new_nd->mnt, new_nd->dentry);
put_fs_struct(fs);
} else
@@ -1281,8 +1534,8 @@
* though, so you may need to say mount --bind /nfs/my_root /nfs/my_root
* first.
*/
-
-asmlinkage long sys_pivot_root(const char __user *new_root, const char __user *put_old)
+asmlinkage long sys_pivot_root(const char __user * new_root,
+ const char __user * put_old)
{
struct vfsmount *tmp;
struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
@@ -1293,14 +1546,15 @@
lock_kernel();
- error = __user_walk(new_root, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd);
+ error = __user_walk(new_root, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
+ &new_nd);
if (error)
goto out0;
error = -EINVAL;
if (!check_mnt(new_nd.mnt))
goto out1;
- error = __user_walk(put_old, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd);
+ error = __user_walk(put_old, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &old_nd);
if (error)
goto out1;
@@ -1314,9 +1568,13 @@
user_nd.mnt = mntget(current->fs->rootmnt);
user_nd.dentry = dget(current->fs->root);
read_unlock(¤t->fs->lock);
- down_write(¤t->namespace->sem);
+ down_write(&namespace_sem);
down(&old_nd.dentry->d_inode->i_sem);
error = -EINVAL;
+ if (IS_MNT_SHARED(old_nd.mnt) ||
+ IS_MNT_SHARED(new_nd.mnt->mnt_parent) ||
+ IS_MNT_SHARED(user_nd.mnt->mnt_parent))
+ goto out2;
if (!check_mnt(user_nd.mnt))
goto out2;
error = -ENOENT;
@@ -1356,6 +1614,7 @@
detach_mnt(user_nd.mnt, &root_parent);
attach_mnt(user_nd.mnt, &old_nd); /* mount old root on put_old */
attach_mnt(new_nd.mnt, &root_parent); /* mount new_root on / */
+ touch_namespace(current->namespace);
spin_unlock(&vfsmount_lock);
chroot_fs_refs(&user_nd, &new_nd);
security_sb_post_pivotroot(&user_nd, &new_nd);
@@ -1364,7 +1623,7 @@
path_release(&parent_nd);
out2:
up(&old_nd.dentry->d_inode->i_sem);
- up_write(¤t->namespace->sem);
+ up_write(&namespace_sem);
path_release(&user_nd);
path_release(&old_nd);
out1:
@@ -1391,7 +1650,8 @@
panic("Can't allocate initial namespace");
atomic_set(&namespace->count, 1);
INIT_LIST_HEAD(&namespace->list);
- init_rwsem(&namespace->sem);
+ init_waitqueue_head(&namespace->poll);
+ namespace->event = 0;
list_add(&mnt->mnt_list, &namespace->list);
namespace->root = mnt;
mnt->mnt_namespace = namespace;
@@ -1414,11 +1674,12 @@
unsigned int nr_hash;
int i;
- mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct vfsmount),
- 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
+ init_rwsem(&namespace_sem);
- mount_hashtable = (struct list_head *)
- __get_free_page(GFP_ATOMIC);
+ mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct vfsmount),
+ 0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL, NULL);
+
+ mount_hashtable = (struct list_head *)__get_free_page(GFP_ATOMIC);
if (!mount_hashtable)
panic("Failed to allocate mount hash table\n");
@@ -1440,7 +1701,7 @@
* from the number of bits we can fit.
*/
nr_hash = 1UL << hash_bits;
- hash_mask = nr_hash-1;
+ hash_mask = nr_hash - 1;
printk("Mount-cache hash table entries: %d\n", nr_hash);
@@ -1460,12 +1721,14 @@
void __put_namespace(struct namespace *namespace)
{
struct vfsmount *root = namespace->root;
+ LIST_HEAD(umount_list);
namespace->root = NULL;
spin_unlock(&vfsmount_lock);
- down_write(&namespace->sem);
+ down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
- umount_tree(root);
+ umount_tree(root, 0, &umount_list);
spin_unlock(&vfsmount_lock);
- up_write(&namespace->sem);
+ up_write(&namespace_sem);
+ release_mounts(&umount_list);
kfree(namespace);
}
diff --git a/fs/pnode.c b/fs/pnode.c
new file mode 100644
index 0000000..aeeec8b
--- /dev/null
+++ b/fs/pnode.c
@@ -0,0 +1,305 @@
+/*
+ * linux/fs/pnode.c
+ *
+ * (C) Copyright IBM Corporation 2005.
+ * Released under GPL v2.
+ * Author : Ram Pai (linuxram@us.ibm.com)
+ *
+ */
+#include <linux/namespace.h>
+#include <linux/mount.h>
+#include <linux/fs.h>
+#include "pnode.h"
+
+/* return the next shared peer mount of @p */
+static inline struct vfsmount *next_peer(struct vfsmount *p)
+{
+ return list_entry(p->mnt_share.next, struct vfsmount, mnt_share);
+}
+
+static inline struct vfsmount *first_slave(struct vfsmount *p)
+{
+ return list_entry(p->mnt_slave_list.next, struct vfsmount, mnt_slave);
+}
+
+static inline struct vfsmount *next_slave(struct vfsmount *p)
+{
+ return list_entry(p->mnt_slave.next, struct vfsmount, mnt_slave);
+}
+
+static int do_make_slave(struct vfsmount *mnt)
+{
+ struct vfsmount *peer_mnt = mnt, *master = mnt->mnt_master;
+ struct vfsmount *slave_mnt;
+
+ /*
+ * slave 'mnt' to a peer mount that has the
+ * same root dentry. If none is available than
+ * slave it to anything that is available.
+ */
+ while ((peer_mnt = next_peer(peer_mnt)) != mnt &&
+ peer_mnt->mnt_root != mnt->mnt_root) ;
+
+ if (peer_mnt == mnt) {
+ peer_mnt = next_peer(mnt);
+ if (peer_mnt == mnt)
+ peer_mnt = NULL;
+ }
+ list_del_init(&mnt->mnt_share);
+
+ if (peer_mnt)
+ master = peer_mnt;
+
+ if (master) {
+ list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave)
+ slave_mnt->mnt_master = master;
+ list_del(&mnt->mnt_slave);
+ list_add(&mnt->mnt_slave, &master->mnt_slave_list);
+ list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev);
+ INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ } else {
+ struct list_head *p = &mnt->mnt_slave_list;
+ while (!list_empty(p)) {
+ slave_mnt = list_entry(p->next,
+ struct vfsmount, mnt_slave);
+ list_del_init(&slave_mnt->mnt_slave);
+ slave_mnt->mnt_master = NULL;
+ }
+ }
+ mnt->mnt_master = master;
+ CLEAR_MNT_SHARED(mnt);
+ INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ return 0;
+}
+
+void change_mnt_propagation(struct vfsmount *mnt, int type)
+{
+ if (type == MS_SHARED) {
+ set_mnt_shared(mnt);
+ return;
+ }
+ do_make_slave(mnt);
+ if (type != MS_SLAVE) {
+ list_del_init(&mnt->mnt_slave);
+ mnt->mnt_master = NULL;
+ if (type == MS_UNBINDABLE)
+ mnt->mnt_flags |= MNT_UNBINDABLE;
+ }
+}
+
+/*
+ * get the next mount in the propagation tree.
+ * @m: the mount seen last
+ * @origin: the original mount from where the tree walk initiated
+ */
+static struct vfsmount *propagation_next(struct vfsmount *m,
+ struct vfsmount *origin)
+{
+ /* are there any slaves of this mount? */
+ if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list))
+ return first_slave(m);
+
+ while (1) {
+ struct vfsmount *next;
+ struct vfsmount *master = m->mnt_master;
+
+ if ( master == origin->mnt_master ) {
+ next = next_peer(m);
+ return ((next == origin) ? NULL : next);
+ } else if (m->mnt_slave.next != &master->mnt_slave_list)
+ return next_slave(m);
+
+ /* back at master */
+ m = master;
+ }
+}
+
+/*
+ * return the source mount to be used for cloning
+ *
+ * @dest the current destination mount
+ * @last_dest the last seen destination mount
+ * @last_src the last seen source mount
+ * @type return CL_SLAVE if the new mount has to be
+ * cloned as a slave.
+ */
+static struct vfsmount *get_source(struct vfsmount *dest,
+ struct vfsmount *last_dest,
+ struct vfsmount *last_src,
+ int *type)
+{
+ struct vfsmount *p_last_src = NULL;
+ struct vfsmount *p_last_dest = NULL;
+ *type = CL_PROPAGATION;;
+
+ if (IS_MNT_SHARED(dest))
+ *type |= CL_MAKE_SHARED;
+
+ while (last_dest != dest->mnt_master) {
+ p_last_dest = last_dest;
+ p_last_src = last_src;
+ last_dest = last_dest->mnt_master;
+ last_src = last_src->mnt_master;
+ }
+
+ if (p_last_dest) {
+ do {
+ p_last_dest = next_peer(p_last_dest);
+ } while (IS_MNT_NEW(p_last_dest));
+ }
+
+ if (dest != p_last_dest) {
+ *type |= CL_SLAVE;
+ return last_src;
+ } else
+ return p_last_src;
+}
+
+/*
+ * mount 'source_mnt' under the destination 'dest_mnt' at
+ * dentry 'dest_dentry'. And propagate that mount to
+ * all the peer and slave mounts of 'dest_mnt'.
+ * Link all the new mounts into a propagation tree headed at
+ * source_mnt. Also link all the new mounts using ->mnt_list
+ * headed at source_mnt's ->mnt_list
+ *
+ * @dest_mnt: destination mount.
+ * @dest_dentry: destination dentry.
+ * @source_mnt: source mount.
+ * @tree_list : list of heads of trees to be attached.
+ */
+int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
+ struct vfsmount *source_mnt, struct list_head *tree_list)
+{
+ struct vfsmount *m, *child;
+ int ret = 0;
+ struct vfsmount *prev_dest_mnt = dest_mnt;
+ struct vfsmount *prev_src_mnt = source_mnt;
+ LIST_HEAD(tmp_list);
+ LIST_HEAD(umount_list);
+
+ for (m = propagation_next(dest_mnt, dest_mnt); m;
+ m = propagation_next(m, dest_mnt)) {
+ int type;
+ struct vfsmount *source;
+
+ if (IS_MNT_NEW(m))
+ continue;
+
+ source = get_source(m, prev_dest_mnt, prev_src_mnt, &type);
+
+ if (!(child = copy_tree(source, source->mnt_root, type))) {
+ ret = -ENOMEM;
+ list_splice(tree_list, tmp_list.prev);
+ goto out;
+ }
+
+ if (is_subdir(dest_dentry, m->mnt_root)) {
+ mnt_set_mountpoint(m, dest_dentry, child);
+ list_add_tail(&child->mnt_hash, tree_list);
+ } else {
+ /*
+ * This can happen if the parent mount was bind mounted
+ * on some subdirectory of a shared/slave mount.
+ */
+ list_add_tail(&child->mnt_hash, &tmp_list);
+ }
+ prev_dest_mnt = m;
+ prev_src_mnt = child;
+ }
+out:
+ spin_lock(&vfsmount_lock);
+ while (!list_empty(&tmp_list)) {
+ child = list_entry(tmp_list.next, struct vfsmount, mnt_hash);
+ list_del_init(&child->mnt_hash);
+ umount_tree(child, 0, &umount_list);
+ }
+ spin_unlock(&vfsmount_lock);
+ release_mounts(&umount_list);
+ return ret;
+}
+
+/*
+ * return true if the refcount is greater than count
+ */
+static inline int do_refcount_check(struct vfsmount *mnt, int count)
+{
+ int mycount = atomic_read(&mnt->mnt_count);
+ return (mycount > count);
+}
+
+/*
+ * check if the mount 'mnt' can be unmounted successfully.
+ * @mnt: the mount to be checked for unmount
+ * NOTE: unmounting 'mnt' would naturally propagate to all
+ * other mounts its parent propagates to.
+ * Check if any of these mounts that **do not have submounts**
+ * have more references than 'refcnt'. If so return busy.
+ */
+int propagate_mount_busy(struct vfsmount *mnt, int refcnt)
+{
+ struct vfsmount *m, *child;
+ struct vfsmount *parent = mnt->mnt_parent;
+ int ret = 0;
+
+ if (mnt == parent)
+ return do_refcount_check(mnt, refcnt);
+
+ /*
+ * quickly check if the current mount can be unmounted.
+ * If not, we don't have to go checking for all other
+ * mounts
+ */
+ if (!list_empty(&mnt->mnt_mounts) || do_refcount_check(mnt, refcnt))
+ return 1;
+
+ for (m = propagation_next(parent, parent); m;
+ m = propagation_next(m, parent)) {
+ child = __lookup_mnt(m, mnt->mnt_mountpoint, 0);
+ if (child && list_empty(&child->mnt_mounts) &&
+ (ret = do_refcount_check(child, 1)))
+ break;
+ }
+ return ret;
+}
+
+/*
+ * NOTE: unmounting 'mnt' naturally propagates to all other mounts its
+ * parent propagates to.
+ */
+static void __propagate_umount(struct vfsmount *mnt)
+{
+ struct vfsmount *parent = mnt->mnt_parent;
+ struct vfsmount *m;
+
+ BUG_ON(parent == mnt);
+
+ for (m = propagation_next(parent, parent); m;
+ m = propagation_next(m, parent)) {
+
+ struct vfsmount *child = __lookup_mnt(m,
+ mnt->mnt_mountpoint, 0);
+ /*
+ * umount the child only if the child has no
+ * other children
+ */
+ if (child && list_empty(&child->mnt_mounts)) {
+ list_del(&child->mnt_hash);
+ list_add_tail(&child->mnt_hash, &mnt->mnt_hash);
+ }
+ }
+}
+
+/*
+ * collect all mounts that receive propagation from the mount in @list,
+ * and return these additional mounts in the same list.
+ * @list: the list of mounts to be unmounted.
+ */
+int propagate_umount(struct list_head *list)
+{
+ struct vfsmount *mnt;
+
+ list_for_each_entry(mnt, list, mnt_hash)
+ __propagate_umount(mnt);
+ return 0;
+}
diff --git a/fs/pnode.h b/fs/pnode.h
new file mode 100644
index 0000000..020e1bb
--- /dev/null
+++ b/fs/pnode.h
@@ -0,0 +1,37 @@
+/*
+ * linux/fs/pnode.h
+ *
+ * (C) Copyright IBM Corporation 2005.
+ * Released under GPL v2.
+ *
+ */
+#ifndef _LINUX_PNODE_H
+#define _LINUX_PNODE_H
+
+#include <linux/list.h>
+#include <linux/mount.h>
+
+#define IS_MNT_SHARED(mnt) (mnt->mnt_flags & MNT_SHARED)
+#define IS_MNT_SLAVE(mnt) (mnt->mnt_master)
+#define IS_MNT_NEW(mnt) (!mnt->mnt_namespace)
+#define CLEAR_MNT_SHARED(mnt) (mnt->mnt_flags &= ~MNT_SHARED)
+#define IS_MNT_UNBINDABLE(mnt) (mnt->mnt_flags & MNT_UNBINDABLE)
+
+#define CL_EXPIRE 0x01
+#define CL_SLAVE 0x02
+#define CL_COPY_ALL 0x04
+#define CL_MAKE_SHARED 0x08
+#define CL_PROPAGATION 0x10
+
+static inline void set_mnt_shared(struct vfsmount *mnt)
+{
+ mnt->mnt_flags &= ~MNT_PNODE_MASK;
+ mnt->mnt_flags |= MNT_SHARED;
+}
+
+void change_mnt_propagation(struct vfsmount *, int);
+int propagate_mnt(struct vfsmount *, struct dentry *, struct vfsmount *,
+ struct list_head *);
+int propagate_umount(struct list_head *);
+int propagate_mount_busy(struct vfsmount *, int);
+#endif /* _LINUX_PNODE_H */
diff --git a/fs/proc/base.c b/fs/proc/base.c
index a170450..634355e 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -70,6 +70,7 @@
#include <linux/seccomp.h>
#include <linux/cpuset.h>
#include <linux/audit.h>
+#include <linux/poll.h>
#include "internal.h"
/*
@@ -660,26 +661,38 @@
#endif
extern struct seq_operations mounts_op;
+struct proc_mounts {
+ struct seq_file m;
+ int event;
+};
+
static int mounts_open(struct inode *inode, struct file *file)
{
struct task_struct *task = proc_task(inode);
- int ret = seq_open(file, &mounts_op);
+ struct namespace *namespace;
+ struct proc_mounts *p;
+ int ret = -EINVAL;
- if (!ret) {
- struct seq_file *m = file->private_data;
- struct namespace *namespace;
- task_lock(task);
- namespace = task->namespace;
- if (namespace)
- get_namespace(namespace);
- task_unlock(task);
+ task_lock(task);
+ namespace = task->namespace;
+ if (namespace)
+ get_namespace(namespace);
+ task_unlock(task);
- if (namespace)
- m->private = namespace;
- else {
- seq_release(inode, file);
- ret = -EINVAL;
+ if (namespace) {
+ ret = -ENOMEM;
+ p = kmalloc(sizeof(struct proc_mounts), GFP_KERNEL);
+ if (p) {
+ file->private_data = &p->m;
+ ret = seq_open(file, &mounts_op);
+ if (!ret) {
+ p->m.private = namespace;
+ p->event = namespace->event;
+ return 0;
+ }
+ kfree(p);
}
+ put_namespace(namespace);
}
return ret;
}
@@ -692,11 +705,30 @@
return seq_release(inode, file);
}
+static unsigned mounts_poll(struct file *file, poll_table *wait)
+{
+ struct proc_mounts *p = file->private_data;
+ struct namespace *ns = p->m.private;
+ unsigned res = 0;
+
+ poll_wait(file, &ns->poll, wait);
+
+ spin_lock(&vfsmount_lock);
+ if (p->event != ns->event) {
+ p->event = ns->event;
+ res = POLLERR;
+ }
+ spin_unlock(&vfsmount_lock);
+
+ return res;
+}
+
static struct file_operations proc_mounts_operations = {
.open = mounts_open,
.read = seq_read,
.llseek = seq_lseek,
.release = mounts_release,
+ .poll = mounts_poll,
};
#define PROC_BLOCK_SIZE (3*1024) /* 4K page size but our output routines use some slack for overruns */
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 38ef913..7c40570 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -28,13 +28,17 @@
*/
int seq_open(struct file *file, struct seq_operations *op)
{
- struct seq_file *p = kmalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return -ENOMEM;
+ struct seq_file *p = file->private_data;
+
+ if (!p) {
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+ file->private_data = p;
+ }
memset(p, 0, sizeof(*p));
sema_init(&p->sem, 1);
p->op = op;
- file->private_data = p;
/*
* Wrappers around seq_open(e.g. swaps_open) need to be
diff --git a/fs/super.c b/fs/super.c
index eed6c31..6689dde 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -171,6 +171,7 @@
if (atomic_dec_and_lock(&s->s_active, &sb_lock)) {
s->s_count -= S_BIAS-1;
spin_unlock(&sb_lock);
+ DQUOT_OFF(s);
down_write(&s->s_umount);
fs->kill_sb(s);
put_filesystem(fs);
diff --git a/include/asm-arm/arch-realview/entry-macro.S b/include/asm-arm/arch-realview/entry-macro.S
index 2712ba7..4df469b 100644
--- a/include/asm-arm/arch-realview/entry-macro.S
+++ b/include/asm-arm/arch-realview/entry-macro.S
@@ -47,3 +47,17 @@
cmpcs \irqnr, \irqnr
.endm
+
+ /* We assume that irqstat (the raw value of the IRQ acknowledge
+ * register) is preserved from the macro above.
+ * If there is an IPI, we immediately signal end of interrupt on the
+ * controller, since this requires the original irqstat value which
+ * we won't easily be able to recreate later.
+ */
+
+ .macro test_for_ipi, irqnr, irqstat, base, tmp
+ bic \irqnr, \irqstat, #0x1c00
+ cmp \irqnr, #16
+ strcc \irqstat, [\base, #GIC_CPU_EOI]
+ cmpcs \irqnr, \irqnr
+ .endm
diff --git a/include/asm-arm/arch-realview/platform.h b/include/asm-arm/arch-realview/platform.h
index 4b6de13..aef9b36 100644
--- a/include/asm-arm/arch-realview/platform.h
+++ b/include/asm-arm/arch-realview/platform.h
@@ -203,8 +203,14 @@
/* Reserved 0x1001A000 - 0x1001FFFF */
#define REALVIEW_CLCD_BASE 0x10020000 /* CLCD */
#define REALVIEW_DMAC_BASE 0x10030000 /* DMA controller */
+#ifndef CONFIG_REALVIEW_MPCORE
#define REALVIEW_GIC_CPU_BASE 0x10040000 /* Generic interrupt controller CPU interface */
#define REALVIEW_GIC_DIST_BASE 0x10041000 /* Generic interrupt controller distributor */
+#else
+#define REALVIEW_MPCORE_SCU_BASE 0x10100000 /* SCU registers */
+#define REALVIEW_GIC_CPU_BASE 0x10100100 /* Generic interrupt controller CPU interface */
+#define REALVIEW_GIC_DIST_BASE 0x10101000 /* Generic interrupt controller distributor */
+#endif
#define REALVIEW_SMC_BASE 0x10080000 /* SMC */
/* Reserved 0x10090000 - 0x100EFFFF */
@@ -265,6 +271,7 @@
* Interrupts - bit assignment (primary)
* ------------------------------------------------------------------------
*/
+#ifndef CONFIG_REALVIEW_MPCORE
#define INT_WDOGINT 0 /* Watchdog timer */
#define INT_SOFTINT 1 /* Software interrupt */
#define INT_COMMRx 2 /* Debug Comm Rx interrupt */
@@ -297,6 +304,55 @@
#define INT_USB 29 /* USB controller */
#define INT_TSPENINT 30 /* Touchscreen pen */
#define INT_TSKPADINT 31 /* Touchscreen keypad */
+#else
+#define INT_LOCALTIMER 29
+#define INT_LOCALWDOG 30
+
+#define INT_AACI 0
+#define INT_TIMERINT0_1 1
+#define INT_TIMERINT2_3 2
+#define INT_USB 3
+#define INT_UARTINT0 4
+#define INT_UARTINT1 5
+#define INT_RTCINT 6
+#define INT_KMI0 7
+#define INT_KMI1 8
+#define INT_ETH 9
+#define INT_EB_IRQ1 10 /* main GIC */
+#define INT_EB_IRQ2 11 /* tile GIC */
+#define INT_EB_FIQ1 12 /* main GIC */
+#define INT_EB_FIQ2 13 /* tile GIC */
+#define INT_MMCI0A 14
+#define INT_MMCI0B 15
+
+#define INT_PMU_CPU0 17
+#define INT_PMU_CPU1 18
+#define INT_PMU_CPU2 19
+#define INT_PMU_CPU3 20
+#define INT_PMU_SCU0 21
+#define INT_PMU_SCU1 22
+#define INT_PMU_SCU2 23
+#define INT_PMU_SCU3 24
+#define INT_PMU_SCU4 25
+#define INT_PMU_SCU5 26
+#define INT_PMU_SCU6 27
+#define INT_PMU_SCU7 28
+
+#define INT_L220_EVENT 29
+#define INT_L220_SLAVE 30
+#define INT_L220_DECODE 31
+
+#define INT_UARTINT2 -1
+#define INT_UARTINT3 -1
+#define INT_CLCDINT -1
+#define INT_DMAINT -1
+#define INT_WDOGINT -1
+#define INT_GPIOINT0 -1
+#define INT_GPIOINT1 -1
+#define INT_GPIOINT2 -1
+#define INT_SCIINT -1
+#define INT_SSPINT -1
+#endif
/*
* Interrupt bit positions
diff --git a/include/asm-arm/arch-realview/smp.h b/include/asm-arm/arch-realview/smp.h
new file mode 100644
index 0000000..fc87783
--- /dev/null
+++ b/include/asm-arm/arch-realview/smp.h
@@ -0,0 +1,31 @@
+#ifndef ASMARM_ARCH_SMP_H
+#define ASMARM_ARCH_SMP_H
+
+#include <linux/config.h>
+
+#include <asm/hardware/gic.h>
+
+#define hard_smp_processor_id() \
+ ({ \
+ unsigned int cpunum; \
+ __asm__("mrc p15, 0, %0, c0, c0, 5" \
+ : "=r" (cpunum)); \
+ cpunum &= 0x0F; \
+ })
+
+/*
+ * We use IRQ1 as the IPI
+ */
+static inline void smp_cross_call(cpumask_t callmap)
+{
+ gic_raise_softirq(callmap, 1);
+}
+
+/*
+ * Do nothing on MPcore.
+ */
+static inline void smp_cross_call_done(cpumask_t callmap)
+{
+}
+
+#endif
diff --git a/include/asm-arm/hardware/arm_scu.h b/include/asm-arm/hardware/arm_scu.h
new file mode 100644
index 0000000..9903f60
--- /dev/null
+++ b/include/asm-arm/hardware/arm_scu.h
@@ -0,0 +1,13 @@
+#ifndef ASMARM_HARDWARE_ARM_SCU_H
+#define ASMARM_HARDWARE_ARM_SCU_H
+
+/*
+ * SCU registers
+ */
+#define SCU_CTRL 0x00
+#define SCU_CONFIG 0x04
+#define SCU_CPU_STATUS 0x08
+#define SCU_INVALIDATE 0x0c
+#define SCU_FPGA_REVISION 0x10
+
+#endif
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h
index ef436b9..9d41548 100644
--- a/include/asm-ia64/page.h
+++ b/include/asm-ia64/page.h
@@ -120,6 +120,7 @@
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
typedef union ia64_va {
struct {
diff --git a/include/asm-m68k/kbio.h b/include/asm-m68k/kbio.h
deleted file mode 100644
index e1fbf8f..0000000
--- a/include/asm-m68k/kbio.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-sparc/kbio.h>
diff --git a/include/asm-m68k/vuid_event.h b/include/asm-m68k/vuid_event.h
deleted file mode 100644
index 52ecb52..0000000
--- a/include/asm-m68k/vuid_event.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef _M68K_VUID_EVENT_H
-#define _M68K_VUID_EVENT_H
-#include <asm-sparc/vuid_event.h>
-#endif
diff --git a/include/asm-sparc/audioio.h b/include/asm-sparc/audioio.h
deleted file mode 100644
index cf16173..0000000
--- a/include/asm-sparc/audioio.h
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * include/asm-sparc/audioio.h
- *
- * Sparc Audio Midlayer
- * Copyright (C) 1996 Thomas K. Dyas (tdyas@noc.rutgers.edu)
- */
-
-#ifndef _AUDIOIO_H_
-#define _AUDIOIO_H_
-
-/*
- * SunOS/Solaris /dev/audio interface
- */
-
-#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
-#include <linux/types.h>
-#include <linux/time.h>
-#include <linux/ioctl.h>
-#endif
-
-/*
- * This structure contains state information for audio device IO streams.
- */
-typedef struct audio_prinfo {
- /*
- * The following values describe the audio data encoding.
- */
- unsigned int sample_rate; /* samples per second */
- unsigned int channels; /* number of interleaved channels */
- unsigned int precision; /* bit-width of each sample */
- unsigned int encoding; /* data encoding method */
-
- /*
- * The following values control audio device configuration
- */
- unsigned int gain; /* gain level: 0 - 255 */
- unsigned int port; /* selected I/O port (see below) */
- unsigned int avail_ports; /* available I/O ports (see below) */
- unsigned int _xxx[2]; /* Reserved for future use */
-
- unsigned int buffer_size; /* I/O buffer size */
-
- /*
- * The following values describe driver state
- */
- unsigned int samples; /* number of samples converted */
- unsigned int eof; /* End Of File counter (play only) */
-
- unsigned char pause; /* non-zero for pause, zero to resume */
- unsigned char error; /* non-zero if overflow/underflow */
- unsigned char waiting; /* non-zero if a process wants access */
- unsigned char balance; /* stereo channel balance */
-
- unsigned short minordev;
-
- /*
- * The following values are read-only state flags
- */
- unsigned char open; /* non-zero if open access permitted */
- unsigned char active; /* non-zero if I/O is active */
-} audio_prinfo_t;
-
-
-/*
- * This structure describes the current state of the audio device.
- */
-typedef struct audio_info {
- /*
- * Per-stream information
- */
- audio_prinfo_t play; /* output status information */
- audio_prinfo_t record; /* input status information */
-
- /*
- * Per-unit/channel information
- */
- unsigned int monitor_gain; /* input to output mix: 0 - 255 */
- unsigned char output_muted; /* non-zero if output is muted */
- unsigned char _xxx[3]; /* Reserved for future use */
- unsigned int _yyy[3]; /* Reserved for future use */
-} audio_info_t;
-
-
-/*
- * Audio encoding types
- */
-#define AUDIO_ENCODING_NONE (0) /* no encoding assigned */
-#define AUDIO_ENCODING_ULAW (1) /* u-law encoding */
-#define AUDIO_ENCODING_ALAW (2) /* A-law encoding */
-#define AUDIO_ENCODING_LINEAR (3) /* Linear PCM encoding */
-#define AUDIO_ENCODING_FLOAT (4) /* IEEE float (-1. <-> +1.) */
-#define AUDIO_ENCODING_DVI (104) /* DVI ADPCM */
-#define AUDIO_ENCODING_LINEAR8 (105) /* 8 bit UNSIGNED */
-#define AUDIO_ENCODING_LINEARLE (106) /* Linear PCM LE encoding */
-
-/*
- * These ranges apply to record, play, and monitor gain values
- */
-#define AUDIO_MIN_GAIN (0) /* minimum gain value */
-#define AUDIO_MAX_GAIN (255) /* maximum gain value */
-
-/*
- * These values apply to the balance field to adjust channel gain values
- */
-#define AUDIO_LEFT_BALANCE (0) /* left channel only */
-#define AUDIO_MID_BALANCE (32) /* equal left/right channel */
-#define AUDIO_RIGHT_BALANCE (64) /* right channel only */
-#define AUDIO_BALANCE_SHIFT (3)
-
-/*
- * Generic minimum/maximum limits for number of channels, both modes
- */
-#define AUDIO_MIN_PLAY_CHANNELS (1)
-#define AUDIO_MAX_PLAY_CHANNELS (4)
-#define AUDIO_MIN_REC_CHANNELS (1)
-#define AUDIO_MAX_REC_CHANNELS (4)
-
-/*
- * Generic minimum/maximum limits for sample precision
- */
-#define AUDIO_MIN_PLAY_PRECISION (8)
-#define AUDIO_MAX_PLAY_PRECISION (32)
-#define AUDIO_MIN_REC_PRECISION (8)
-#define AUDIO_MAX_REC_PRECISION (32)
-
-/*
- * Define some convenient names for typical audio ports
- */
-/*
- * output ports (several may be enabled simultaneously)
- */
-#define AUDIO_SPEAKER 0x01 /* output to built-in speaker */
-#define AUDIO_HEADPHONE 0x02 /* output to headphone jack */
-#define AUDIO_LINE_OUT 0x04 /* output to line out */
-
-/*
- * input ports (usually only one at a time)
- */
-#define AUDIO_MICROPHONE 0x01 /* input from microphone */
-#define AUDIO_LINE_IN 0x02 /* input from line in */
-#define AUDIO_CD 0x04 /* input from on-board CD inputs */
-#define AUDIO_INTERNAL_CD_IN AUDIO_CD /* input from internal CDROM */
-#define AUDIO_ANALOG_LOOPBACK 0x40 /* input from output */
-
-
-/*
- * This macro initializes an audio_info structure to 'harmless' values.
- * Note that (~0) might not be a harmless value for a flag that was
- * a signed int.
- */
-#define AUDIO_INITINFO(i) { \
- unsigned int *__x__; \
- for (__x__ = (unsigned int *)(i); \
- (char *) __x__ < (((char *)(i)) + sizeof (audio_info_t)); \
- *__x__++ = ~0); \
-}
-
-/*
- * These allow testing for what the user wants to set
- */
-#define AUD_INITVALUE (~0)
-#define Modify(X) ((unsigned int)(X) != AUD_INITVALUE)
-#define Modifys(X) ((X) != (unsigned short)AUD_INITVALUE)
-#define Modifyc(X) ((X) != (unsigned char)AUD_INITVALUE)
-
-/*
- * Parameter for the AUDIO_GETDEV ioctl to determine current
- * audio devices.
- */
-#define MAX_AUDIO_DEV_LEN (16)
-typedef struct audio_device {
- char name[MAX_AUDIO_DEV_LEN];
- char version[MAX_AUDIO_DEV_LEN];
- char config[MAX_AUDIO_DEV_LEN];
-} audio_device_t;
-
-
-/*
- * Ioctl calls for the audio device.
- */
-
-/*
- * AUDIO_GETINFO retrieves the current state of the audio device.
- *
- * AUDIO_SETINFO copies all fields of the audio_info structure whose
- * values are not set to the initialized value (-1) to the device state.
- * It performs an implicit AUDIO_GETINFO to return the new state of the
- * device. Note that the record.samples and play.samples fields are set
- * to the last value before the AUDIO_SETINFO took effect. This allows
- * an application to reset the counters while atomically retrieving the
- * last value.
- *
- * AUDIO_DRAIN suspends the calling process until the write buffers are
- * empty.
- *
- * AUDIO_GETDEV returns a structure of type audio_device_t which contains
- * three strings. The string "name" is a short identifying string (for
- * example, the SBus Fcode name string), the string "version" identifies
- * the current version of the device, and the "config" string identifies
- * the specific configuration of the audio stream. All fields are
- * device-dependent -- see the device specific manual pages for details.
- *
- * AUDIO_GETDEV_SUNOS returns a number which is an audio device defined
- * herein (making it not too portable)
- *
- * AUDIO_FLUSH stops all playback and recording, clears all queued buffers,
- * resets error counters, and restarts recording and playback as appropriate
- * for the current sampling mode.
- */
-#define AUDIO_GETINFO _IOR('A', 1, audio_info_t)
-#define AUDIO_SETINFO _IOWR('A', 2, audio_info_t)
-#define AUDIO_DRAIN _IO('A', 3)
-#define AUDIO_GETDEV _IOR('A', 4, audio_device_t)
-#define AUDIO_GETDEV_SUNOS _IOR('A', 4, int)
-#define AUDIO_FLUSH _IO('A', 5)
-
-/* Define possible audio hardware configurations for
- * old SunOS-style AUDIO_GETDEV ioctl */
-#define AUDIO_DEV_UNKNOWN (0) /* not defined */
-#define AUDIO_DEV_AMD (1) /* audioamd device */
-#define AUDIO_DEV_SPEAKERBOX (2) /* dbri device with speakerbox */
-#define AUDIO_DEV_CODEC (3) /* dbri device (internal speaker) */
-#define AUDIO_DEV_CS4231 (5) /* cs4231 device */
-
-/*
- * The following ioctl sets the audio device into an internal loopback mode,
- * if the hardware supports this. The argument is TRUE to set loopback,
- * FALSE to reset to normal operation. If the hardware does not support
- * internal loopback, the ioctl should fail with EINVAL.
- * Causes ADC data to be digitally mixed in and sent to the DAC.
- */
-#define AUDIO_DIAG_LOOPBACK _IOW('A', 101, int)
-
-#endif /* _AUDIOIO_H_ */
diff --git a/include/asm-sparc/kbio.h b/include/asm-sparc/kbio.h
deleted file mode 100644
index 3cf496b..0000000
--- a/include/asm-sparc/kbio.h
+++ /dev/null
@@ -1,56 +0,0 @@
-#ifndef __LINUX_KBIO_H
-#define __LINUX_KBIO_H
-
-/* Return keyboard type */
-#define KIOCTYPE _IOR('k', 9, int)
-/* Return Keyboard layout */
-#define KIOCLAYOUT _IOR('k', 20, int)
-
-enum {
- TR_NONE,
- TR_ASCII, /* keyboard is in regular state */
- TR_EVENT, /* keystrokes sent as firm events */
- TR_UNTRANS_EVENT /* EVENT+up and down+no translation */
-};
-
-/* Return the current keyboard translation */
-#define KIOCGTRANS _IOR('k', 5, int)
-/* Set the keyboard translation */
-#define KIOCTRANS _IOW('k', 0, int)
-
-/* Send a keyboard command */
-#define KIOCCMD _IOW('k', 8, int)
-
-/* Return if keystrokes are being sent to /dev/kbd */
-
-/* Set routing of keystrokes to /dev/kbd */
-#define KIOCSDIRECT _IOW('k', 10, int)
-
-/* Set keyboard leds */
-#define KIOCSLED _IOW('k', 14, unsigned char)
-
-/* Get keyboard leds */
-#define KIOCGLED _IOR('k', 15, unsigned char)
-
-/* Used by KIOC[GS]RATE */
-struct kbd_rate {
- unsigned char delay; /* Delay in Hz before first repeat. */
- unsigned char rate; /* In characters per second (0..50). */
-};
-
-/* Set keyboard rate */
-#define KIOCSRATE _IOW('k', 40, struct kbd_rate)
-
-/* Get keyboard rate */
-#define KIOCGRATE _IOW('k', 41, struct kbd_rate)
-
-/* Top bit records if the key is up or down */
-#define KBD_UP 0x80
-
-/* Usable information */
-#define KBD_KEYMASK 0x7f
-
-/* All keys up */
-#define KBD_IDLE 0x75
-
-#endif /* __LINUX_KBIO_H */
diff --git a/include/asm-sparc/termios.h b/include/asm-sparc/termios.h
index 0a8ad4c..d05f83c 100644
--- a/include/asm-sparc/termios.h
+++ b/include/asm-sparc/termios.h
@@ -38,15 +38,6 @@
int st_columns; /* Columns on the terminal */
};
-/* Used for packet mode */
-#define TIOCPKT_DATA 0
-#define TIOCPKT_FLUSHREAD 1
-#define TIOCPKT_FLUSHWRITE 2
-#define TIOCPKT_STOP 4
-#define TIOCPKT_START 8
-#define TIOCPKT_NOSTOP 16
-#define TIOCPKT_DOSTOP 32
-
struct winsize {
unsigned short ws_row;
unsigned short ws_col;
diff --git a/include/asm-sparc/vuid_event.h b/include/asm-sparc/vuid_event.h
deleted file mode 100644
index 7781e9f2..0000000
--- a/include/asm-sparc/vuid_event.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* SunOS Virtual User Input Device (VUID) compatibility */
-
-
-typedef struct firm_event {
- unsigned short id; /* tag for this event */
- unsigned char pair_type; /* unused by X11 */
- unsigned char pair; /* unused by X11 */
- int value; /* VKEY_UP, VKEY_DOWN or delta */
- struct timeval time;
-} Firm_event;
-
-enum {
- FE_PAIR_NONE,
- FE_PAIR_SET,
- FE_PAIR_DELTA,
- FE_PAIR_ABSOLUTE
-};
-
-/* VUID stream formats */
-#define VUID_NATIVE 0 /* Native byte stream format */
-#define VUID_FIRM_EVENT 1 /* send firm_event structures */
-
-/* ioctls */
- /* Set input device byte stream format (any of VUID_{NATIVE,FIRM_EVENT}) */
-#define VUIDSFORMAT _IOW('v', 1, int)
- /* Retrieve input device byte stream format */
-#define VUIDGFORMAT _IOR('v', 2, int)
-
-/* Possible tag values */
-/* mouse buttons: */
-#define MS_LEFT 0x7f20
-#define MS_MIDDLE 0x7f21
-#define MS_RIGHT 0x7f22
-/* motion: */
-#define LOC_X_DELTA 0x7f80
-#define LOC_Y_DELTA 0x7f81
-#define LOC_X_ABSOLUTE 0x7f82 /* X compat, unsupported */
-#define LOC_Y_ABSOLUTE 0x7f83 /* X compat, unsupported */
-
-#define VKEY_UP 0
-#define VKEY_DOWN 1
diff --git a/include/asm-sparc64/audioio.h b/include/asm-sparc64/audioio.h
deleted file mode 100644
index cf16173..0000000
--- a/include/asm-sparc64/audioio.h
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * include/asm-sparc/audioio.h
- *
- * Sparc Audio Midlayer
- * Copyright (C) 1996 Thomas K. Dyas (tdyas@noc.rutgers.edu)
- */
-
-#ifndef _AUDIOIO_H_
-#define _AUDIOIO_H_
-
-/*
- * SunOS/Solaris /dev/audio interface
- */
-
-#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
-#include <linux/types.h>
-#include <linux/time.h>
-#include <linux/ioctl.h>
-#endif
-
-/*
- * This structure contains state information for audio device IO streams.
- */
-typedef struct audio_prinfo {
- /*
- * The following values describe the audio data encoding.
- */
- unsigned int sample_rate; /* samples per second */
- unsigned int channels; /* number of interleaved channels */
- unsigned int precision; /* bit-width of each sample */
- unsigned int encoding; /* data encoding method */
-
- /*
- * The following values control audio device configuration
- */
- unsigned int gain; /* gain level: 0 - 255 */
- unsigned int port; /* selected I/O port (see below) */
- unsigned int avail_ports; /* available I/O ports (see below) */
- unsigned int _xxx[2]; /* Reserved for future use */
-
- unsigned int buffer_size; /* I/O buffer size */
-
- /*
- * The following values describe driver state
- */
- unsigned int samples; /* number of samples converted */
- unsigned int eof; /* End Of File counter (play only) */
-
- unsigned char pause; /* non-zero for pause, zero to resume */
- unsigned char error; /* non-zero if overflow/underflow */
- unsigned char waiting; /* non-zero if a process wants access */
- unsigned char balance; /* stereo channel balance */
-
- unsigned short minordev;
-
- /*
- * The following values are read-only state flags
- */
- unsigned char open; /* non-zero if open access permitted */
- unsigned char active; /* non-zero if I/O is active */
-} audio_prinfo_t;
-
-
-/*
- * This structure describes the current state of the audio device.
- */
-typedef struct audio_info {
- /*
- * Per-stream information
- */
- audio_prinfo_t play; /* output status information */
- audio_prinfo_t record; /* input status information */
-
- /*
- * Per-unit/channel information
- */
- unsigned int monitor_gain; /* input to output mix: 0 - 255 */
- unsigned char output_muted; /* non-zero if output is muted */
- unsigned char _xxx[3]; /* Reserved for future use */
- unsigned int _yyy[3]; /* Reserved for future use */
-} audio_info_t;
-
-
-/*
- * Audio encoding types
- */
-#define AUDIO_ENCODING_NONE (0) /* no encoding assigned */
-#define AUDIO_ENCODING_ULAW (1) /* u-law encoding */
-#define AUDIO_ENCODING_ALAW (2) /* A-law encoding */
-#define AUDIO_ENCODING_LINEAR (3) /* Linear PCM encoding */
-#define AUDIO_ENCODING_FLOAT (4) /* IEEE float (-1. <-> +1.) */
-#define AUDIO_ENCODING_DVI (104) /* DVI ADPCM */
-#define AUDIO_ENCODING_LINEAR8 (105) /* 8 bit UNSIGNED */
-#define AUDIO_ENCODING_LINEARLE (106) /* Linear PCM LE encoding */
-
-/*
- * These ranges apply to record, play, and monitor gain values
- */
-#define AUDIO_MIN_GAIN (0) /* minimum gain value */
-#define AUDIO_MAX_GAIN (255) /* maximum gain value */
-
-/*
- * These values apply to the balance field to adjust channel gain values
- */
-#define AUDIO_LEFT_BALANCE (0) /* left channel only */
-#define AUDIO_MID_BALANCE (32) /* equal left/right channel */
-#define AUDIO_RIGHT_BALANCE (64) /* right channel only */
-#define AUDIO_BALANCE_SHIFT (3)
-
-/*
- * Generic minimum/maximum limits for number of channels, both modes
- */
-#define AUDIO_MIN_PLAY_CHANNELS (1)
-#define AUDIO_MAX_PLAY_CHANNELS (4)
-#define AUDIO_MIN_REC_CHANNELS (1)
-#define AUDIO_MAX_REC_CHANNELS (4)
-
-/*
- * Generic minimum/maximum limits for sample precision
- */
-#define AUDIO_MIN_PLAY_PRECISION (8)
-#define AUDIO_MAX_PLAY_PRECISION (32)
-#define AUDIO_MIN_REC_PRECISION (8)
-#define AUDIO_MAX_REC_PRECISION (32)
-
-/*
- * Define some convenient names for typical audio ports
- */
-/*
- * output ports (several may be enabled simultaneously)
- */
-#define AUDIO_SPEAKER 0x01 /* output to built-in speaker */
-#define AUDIO_HEADPHONE 0x02 /* output to headphone jack */
-#define AUDIO_LINE_OUT 0x04 /* output to line out */
-
-/*
- * input ports (usually only one at a time)
- */
-#define AUDIO_MICROPHONE 0x01 /* input from microphone */
-#define AUDIO_LINE_IN 0x02 /* input from line in */
-#define AUDIO_CD 0x04 /* input from on-board CD inputs */
-#define AUDIO_INTERNAL_CD_IN AUDIO_CD /* input from internal CDROM */
-#define AUDIO_ANALOG_LOOPBACK 0x40 /* input from output */
-
-
-/*
- * This macro initializes an audio_info structure to 'harmless' values.
- * Note that (~0) might not be a harmless value for a flag that was
- * a signed int.
- */
-#define AUDIO_INITINFO(i) { \
- unsigned int *__x__; \
- for (__x__ = (unsigned int *)(i); \
- (char *) __x__ < (((char *)(i)) + sizeof (audio_info_t)); \
- *__x__++ = ~0); \
-}
-
-/*
- * These allow testing for what the user wants to set
- */
-#define AUD_INITVALUE (~0)
-#define Modify(X) ((unsigned int)(X) != AUD_INITVALUE)
-#define Modifys(X) ((X) != (unsigned short)AUD_INITVALUE)
-#define Modifyc(X) ((X) != (unsigned char)AUD_INITVALUE)
-
-/*
- * Parameter for the AUDIO_GETDEV ioctl to determine current
- * audio devices.
- */
-#define MAX_AUDIO_DEV_LEN (16)
-typedef struct audio_device {
- char name[MAX_AUDIO_DEV_LEN];
- char version[MAX_AUDIO_DEV_LEN];
- char config[MAX_AUDIO_DEV_LEN];
-} audio_device_t;
-
-
-/*
- * Ioctl calls for the audio device.
- */
-
-/*
- * AUDIO_GETINFO retrieves the current state of the audio device.
- *
- * AUDIO_SETINFO copies all fields of the audio_info structure whose
- * values are not set to the initialized value (-1) to the device state.
- * It performs an implicit AUDIO_GETINFO to return the new state of the
- * device. Note that the record.samples and play.samples fields are set
- * to the last value before the AUDIO_SETINFO took effect. This allows
- * an application to reset the counters while atomically retrieving the
- * last value.
- *
- * AUDIO_DRAIN suspends the calling process until the write buffers are
- * empty.
- *
- * AUDIO_GETDEV returns a structure of type audio_device_t which contains
- * three strings. The string "name" is a short identifying string (for
- * example, the SBus Fcode name string), the string "version" identifies
- * the current version of the device, and the "config" string identifies
- * the specific configuration of the audio stream. All fields are
- * device-dependent -- see the device specific manual pages for details.
- *
- * AUDIO_GETDEV_SUNOS returns a number which is an audio device defined
- * herein (making it not too portable)
- *
- * AUDIO_FLUSH stops all playback and recording, clears all queued buffers,
- * resets error counters, and restarts recording and playback as appropriate
- * for the current sampling mode.
- */
-#define AUDIO_GETINFO _IOR('A', 1, audio_info_t)
-#define AUDIO_SETINFO _IOWR('A', 2, audio_info_t)
-#define AUDIO_DRAIN _IO('A', 3)
-#define AUDIO_GETDEV _IOR('A', 4, audio_device_t)
-#define AUDIO_GETDEV_SUNOS _IOR('A', 4, int)
-#define AUDIO_FLUSH _IO('A', 5)
-
-/* Define possible audio hardware configurations for
- * old SunOS-style AUDIO_GETDEV ioctl */
-#define AUDIO_DEV_UNKNOWN (0) /* not defined */
-#define AUDIO_DEV_AMD (1) /* audioamd device */
-#define AUDIO_DEV_SPEAKERBOX (2) /* dbri device with speakerbox */
-#define AUDIO_DEV_CODEC (3) /* dbri device (internal speaker) */
-#define AUDIO_DEV_CS4231 (5) /* cs4231 device */
-
-/*
- * The following ioctl sets the audio device into an internal loopback mode,
- * if the hardware supports this. The argument is TRUE to set loopback,
- * FALSE to reset to normal operation. If the hardware does not support
- * internal loopback, the ioctl should fail with EINVAL.
- * Causes ADC data to be digitally mixed in and sent to the DAC.
- */
-#define AUDIO_DIAG_LOOPBACK _IOW('A', 101, int)
-
-#endif /* _AUDIOIO_H_ */
diff --git a/include/asm-sparc64/ebus.h b/include/asm-sparc64/ebus.h
index 543e4e5..7a408a0 100644
--- a/include/asm-sparc64/ebus.h
+++ b/include/asm-sparc64/ebus.h
@@ -79,6 +79,7 @@
size_t len);
extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
+extern unsigned int ebus_dma_addr(struct ebus_dma_info *p);
extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
extern struct linux_ebus *ebus_chain;
diff --git a/include/asm-sparc64/kbio.h b/include/asm-sparc64/kbio.h
deleted file mode 100644
index 3cf496b..0000000
--- a/include/asm-sparc64/kbio.h
+++ /dev/null
@@ -1,56 +0,0 @@
-#ifndef __LINUX_KBIO_H
-#define __LINUX_KBIO_H
-
-/* Return keyboard type */
-#define KIOCTYPE _IOR('k', 9, int)
-/* Return Keyboard layout */
-#define KIOCLAYOUT _IOR('k', 20, int)
-
-enum {
- TR_NONE,
- TR_ASCII, /* keyboard is in regular state */
- TR_EVENT, /* keystrokes sent as firm events */
- TR_UNTRANS_EVENT /* EVENT+up and down+no translation */
-};
-
-/* Return the current keyboard translation */
-#define KIOCGTRANS _IOR('k', 5, int)
-/* Set the keyboard translation */
-#define KIOCTRANS _IOW('k', 0, int)
-
-/* Send a keyboard command */
-#define KIOCCMD _IOW('k', 8, int)
-
-/* Return if keystrokes are being sent to /dev/kbd */
-
-/* Set routing of keystrokes to /dev/kbd */
-#define KIOCSDIRECT _IOW('k', 10, int)
-
-/* Set keyboard leds */
-#define KIOCSLED _IOW('k', 14, unsigned char)
-
-/* Get keyboard leds */
-#define KIOCGLED _IOR('k', 15, unsigned char)
-
-/* Used by KIOC[GS]RATE */
-struct kbd_rate {
- unsigned char delay; /* Delay in Hz before first repeat. */
- unsigned char rate; /* In characters per second (0..50). */
-};
-
-/* Set keyboard rate */
-#define KIOCSRATE _IOW('k', 40, struct kbd_rate)
-
-/* Get keyboard rate */
-#define KIOCGRATE _IOW('k', 41, struct kbd_rate)
-
-/* Top bit records if the key is up or down */
-#define KBD_UP 0x80
-
-/* Usable information */
-#define KBD_KEYMASK 0x7f
-
-/* All keys up */
-#define KBD_IDLE 0x75
-
-#endif /* __LINUX_KBIO_H */
diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 87c43c6..08ba72d 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -87,37 +87,35 @@
static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, struct task_struct *tsk)
{
unsigned long ctx_valid;
+ int cpu;
+ /* Note: page_table_lock is used here to serialize switch_mm
+ * and activate_mm, and their calls to get_new_mmu_context.
+ * This use of page_table_lock is unrelated to its other uses.
+ */
spin_lock(&mm->page_table_lock);
- if (CTX_VALID(mm->context))
- ctx_valid = 1;
- else
- ctx_valid = 0;
+ ctx_valid = CTX_VALID(mm->context);
+ if (!ctx_valid)
+ get_new_mmu_context(mm);
+ spin_unlock(&mm->page_table_lock);
if (!ctx_valid || (old_mm != mm)) {
- if (!ctx_valid)
- get_new_mmu_context(mm);
-
load_secondary_context(mm);
reload_tlbmiss_state(tsk, mm);
}
- {
- int cpu = smp_processor_id();
-
- /* Even if (mm == old_mm) we _must_ check
- * the cpu_vm_mask. If we do not we could
- * corrupt the TLB state because of how
- * smp_flush_tlb_{page,range,mm} on sparc64
- * and lazy tlb switches work. -DaveM
- */
- if (!ctx_valid || !cpu_isset(cpu, mm->cpu_vm_mask)) {
- cpu_set(cpu, mm->cpu_vm_mask);
- __flush_tlb_mm(CTX_HWBITS(mm->context),
- SECONDARY_CONTEXT);
- }
+ /* Even if (mm == old_mm) we _must_ check
+ * the cpu_vm_mask. If we do not we could
+ * corrupt the TLB state because of how
+ * smp_flush_tlb_{page,range,mm} on sparc64
+ * and lazy tlb switches work. -DaveM
+ */
+ cpu = smp_processor_id();
+ if (!ctx_valid || !cpu_isset(cpu, mm->cpu_vm_mask)) {
+ cpu_set(cpu, mm->cpu_vm_mask);
+ __flush_tlb_mm(CTX_HWBITS(mm->context),
+ SECONDARY_CONTEXT);
}
- spin_unlock(&mm->page_table_lock);
}
#define deactivate_mm(tsk,mm) do { } while (0)
@@ -127,6 +125,10 @@
{
int cpu;
+ /* Note: page_table_lock is used here to serialize switch_mm
+ * and activate_mm, and their calls to get_new_mmu_context.
+ * This use of page_table_lock is unrelated to its other uses.
+ */
spin_lock(&mm->page_table_lock);
if (!CTX_VALID(mm->context))
get_new_mmu_context(mm);
diff --git a/include/asm-sparc64/termios.h b/include/asm-sparc64/termios.h
index 9777a9c..ee26a07 100644
--- a/include/asm-sparc64/termios.h
+++ b/include/asm-sparc64/termios.h
@@ -38,15 +38,6 @@
int st_columns; /* Columns on the terminal */
};
-/* Used for packet mode */
-#define TIOCPKT_DATA 0
-#define TIOCPKT_FLUSHREAD 1
-#define TIOCPKT_FLUSHWRITE 2
-#define TIOCPKT_STOP 4
-#define TIOCPKT_START 8
-#define TIOCPKT_NOSTOP 16
-#define TIOCPKT_DOSTOP 32
-
struct winsize {
unsigned short ws_row;
unsigned short ws_col;
diff --git a/include/asm-sparc64/tlb.h b/include/asm-sparc64/tlb.h
index 66138d9..61c0188 100644
--- a/include/asm-sparc64/tlb.h
+++ b/include/asm-sparc64/tlb.h
@@ -58,11 +58,9 @@
static inline void tlb_flush_mmu(struct mmu_gather *mp)
{
if (mp->need_flush) {
+ free_pages_and_swap_cache(mp->pages, mp->pages_nr);
+ mp->pages_nr = 0;
mp->need_flush = 0;
- if (!tlb_fast_mode(mp)) {
- free_pages_and_swap_cache(mp->pages, mp->pages_nr);
- mp->pages_nr = 0;
- }
}
}
@@ -78,11 +76,9 @@
{
tlb_flush_mmu(mp);
- if (mp->fullmm) {
- if (CTX_VALID(mp->mm->context))
- do_flush_tlb_mm(mp->mm);
+ if (mp->fullmm)
mp->fullmm = 0;
- } else
+ else
flush_tlb_pending();
/* keep the page table cache within bounds */
@@ -93,11 +89,11 @@
static inline void tlb_remove_page(struct mmu_gather *mp, struct page *page)
{
- mp->need_flush = 1;
if (tlb_fast_mode(mp)) {
free_page_and_swap_cache(page);
return;
}
+ mp->need_flush = 1;
mp->pages[mp->pages_nr++] = page;
if (mp->pages_nr >= FREE_PTE_NR)
tlb_flush_mmu(mp);
diff --git a/include/asm-sparc64/vuid_event.h b/include/asm-sparc64/vuid_event.h
deleted file mode 100644
index 9ef4d17..0000000
--- a/include/asm-sparc64/vuid_event.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* SunOS Virtual User Input Device (VUID) compatibility */
-
-typedef struct firm_event {
- unsigned short id; /* tag for this event */
- unsigned char pair_type; /* unused by X11 */
- unsigned char pair; /* unused by X11 */
- int value; /* VKEY_UP, VKEY_DOWN or delta */
- struct timeval time;
-} Firm_event;
-
-enum {
- FE_PAIR_NONE,
- FE_PAIR_SET,
- FE_PAIR_DELTA,
- FE_PAIR_ABSOLUTE
-};
-
-/* VUID stream formats */
-#define VUID_NATIVE 0 /* Native byte stream format */
-#define VUID_FIRM_EVENT 1 /* send firm_event structures */
-
-/* ioctls */
- /* Set input device byte stream format (any of VUID_{NATIVE,FIRM_EVENT}) */
-#define VUIDSFORMAT _IOW('v', 1, int)
- /* Retrieve input device byte stream format */
-#define VUIDGFORMAT _IOR('v', 2, int)
-
-/* Possible tag values */
-/* mouse buttons: */
-#define MS_LEFT 0x7f20
-#define MS_MIDDLE 0x7f21
-#define MS_RIGHT 0x7f22
-/* motion: */
-#define LOC_X_DELTA 0x7f80
-#define LOC_Y_DELTA 0x7f81
-#define LOC_X_ABSOLUTE 0x7f82 /* X compat, unsupported */
-#define LOC_Y_ABSOLUTE 0x7f83 /* X compat, unsupported */
-
-#define VKEY_UP 0
-#define VKEY_DOWN 1
diff --git a/include/linux/acct.h b/include/linux/acct.h
index 19f7046..93c5b3c 100644
--- a/include/linux/acct.h
+++ b/include/linux/acct.h
@@ -117,12 +117,15 @@
#include <linux/config.h>
#ifdef CONFIG_BSD_PROCESS_ACCT
+struct vfsmount;
struct super_block;
+extern void acct_auto_close_mnt(struct vfsmount *m);
extern void acct_auto_close(struct super_block *sb);
extern void acct_process(long exitcode);
extern void acct_update_integrals(struct task_struct *tsk);
extern void acct_clear_integrals(struct task_struct *tsk);
#else
+#define acct_auto_close_mnt(x) do { } while (0)
#define acct_auto_close(x) do { } while (0)
#define acct_process(x) do { } while (0)
#define acct_update_integrals(x) do { } while (0)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index ab04b4f..46a2ba6 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -329,6 +329,7 @@
}
extern struct vfsmount *lookup_mnt(struct vfsmount *, struct dentry *);
+extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
extern int sysctl_vfs_cache_pressure;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9a593ef..1b5f502 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -104,6 +104,10 @@
#define MS_MOVE 8192
#define MS_REC 16384
#define MS_VERBOSE 32768
+#define MS_UNBINDABLE (1<<17) /* change to unbindable */
+#define MS_PRIVATE (1<<18) /* change to private */
+#define MS_SLAVE (1<<19) /* change to slave */
+#define MS_SHARED (1<<20) /* change to shared */
#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
#define MS_ACTIVE (1<<30)
#define MS_NOUSER (1<<31)
@@ -1249,7 +1253,12 @@
extern struct vfsmount *kern_mount(struct file_system_type *);
extern int may_umount_tree(struct vfsmount *);
extern int may_umount(struct vfsmount *);
+extern void umount_tree(struct vfsmount *, int, struct list_head *);
+extern void release_mounts(struct list_head *);
extern long do_mount(char *, char *, char *, unsigned long, void *);
+extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
+extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
+ struct vfsmount *);
extern int vfs_statfs(struct super_block *, struct kstatfs *);
diff --git a/include/linux/mount.h b/include/linux/mount.h
index f8f3993..dd4e83e 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -17,12 +17,14 @@
#include <linux/spinlock.h>
#include <asm/atomic.h>
-#define MNT_NOSUID 1
-#define MNT_NODEV 2
-#define MNT_NOEXEC 4
+#define MNT_NOSUID 0x01
+#define MNT_NODEV 0x02
+#define MNT_NOEXEC 0x04
+#define MNT_SHARED 0x10 /* if the vfsmount is a shared mount */
+#define MNT_UNBINDABLE 0x20 /* if the vfsmount is a unbindable mount */
+#define MNT_PNODE_MASK 0x30 /* propogation flag mask */
-struct vfsmount
-{
+struct vfsmount {
struct list_head mnt_hash;
struct vfsmount *mnt_parent; /* fs we are mounted on */
struct dentry *mnt_mountpoint; /* dentry of mountpoint */
@@ -36,7 +38,12 @@
char *mnt_devname; /* Name of device e.g. /dev/dsk/hda1 */
struct list_head mnt_list;
struct list_head mnt_expire; /* link in fs-specific expiry list */
+ struct list_head mnt_share; /* circular list of shared mounts */
+ struct list_head mnt_slave_list;/* list of slave mounts */
+ struct list_head mnt_slave; /* slave list entry */
+ struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */
struct namespace *mnt_namespace; /* containing namespace */
+ int mnt_pinned;
};
static inline struct vfsmount *mntget(struct vfsmount *mnt)
@@ -46,15 +53,9 @@
return mnt;
}
-extern void __mntput(struct vfsmount *mnt);
-
-static inline void mntput_no_expire(struct vfsmount *mnt)
-{
- if (mnt) {
- if (atomic_dec_and_test(&mnt->mnt_count))
- __mntput(mnt);
- }
-}
+extern void mntput_no_expire(struct vfsmount *mnt);
+extern void mnt_pin(struct vfsmount *mnt);
+extern void mnt_unpin(struct vfsmount *mnt);
static inline void mntput(struct vfsmount *mnt)
{
diff --git a/include/linux/namespace.h b/include/linux/namespace.h
index 0e5a86f..6731977 100644
--- a/include/linux/namespace.h
+++ b/include/linux/namespace.h
@@ -9,7 +9,8 @@
atomic_t count;
struct vfsmount * root;
struct list_head list;
- struct rw_semaphore sem;
+ wait_queue_head_t poll;
+ int event;
};
extern int copy_namespace(int, struct task_struct *);
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 700ead4..f33aeb2 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -289,7 +289,6 @@
struct semaphore dqonoff_sem; /* Serialize quotaon & quotaoff */
struct rw_semaphore dqptr_sem; /* serialize ops using quota_info struct, pointers from inode to dquots */
struct inode *files[MAXQUOTAS]; /* inodes of quotafiles */
- struct vfsmount *mnt[MAXQUOTAS]; /* mountpoint entries of filesystems with quota files */
struct mem_dqinfo info[MAXQUOTAS]; /* Information for each quota type */
struct quota_format_ops *ops[MAXQUOTAS]; /* Operations for each type */
};
diff --git a/kernel/acct.c b/kernel/acct.c
index 2e3f4a4..6312d6b 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -54,6 +54,7 @@
#include <linux/jiffies.h>
#include <linux/times.h>
#include <linux/syscalls.h>
+#include <linux/mount.h>
#include <asm/uaccess.h>
#include <asm/div64.h>
#include <linux/blkdev.h> /* sector_div */
@@ -192,6 +193,7 @@
add_timer(&acct_globals.timer);
}
if (old_acct) {
+ mnt_unpin(old_acct->f_vfsmnt);
spin_unlock(&acct_globals.lock);
do_acct_process(0, old_acct);
filp_close(old_acct, NULL);
@@ -199,6 +201,42 @@
}
}
+static int acct_on(char *name)
+{
+ struct file *file;
+ int error;
+
+ /* Difference from BSD - they don't do O_APPEND */
+ file = filp_open(name, O_WRONLY|O_APPEND|O_LARGEFILE, 0);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
+ filp_close(file, NULL);
+ return -EACCES;
+ }
+
+ if (!file->f_op->write) {
+ filp_close(file, NULL);
+ return -EIO;
+ }
+
+ error = security_acct(file);
+ if (error) {
+ filp_close(file, NULL);
+ return error;
+ }
+
+ spin_lock(&acct_globals.lock);
+ mnt_pin(file->f_vfsmnt);
+ acct_file_reopen(file);
+ spin_unlock(&acct_globals.lock);
+
+ mntput(file->f_vfsmnt); /* it's pinned, now give up active reference */
+
+ return 0;
+}
+
/**
* sys_acct - enable/disable process accounting
* @name: file name for accounting records or NULL to shutdown accounting
@@ -212,47 +250,41 @@
*/
asmlinkage long sys_acct(const char __user *name)
{
- struct file *file = NULL;
- char *tmp;
int error;
if (!capable(CAP_SYS_PACCT))
return -EPERM;
if (name) {
- tmp = getname(name);
- if (IS_ERR(tmp)) {
+ char *tmp = getname(name);
+ if (IS_ERR(tmp))
return (PTR_ERR(tmp));
- }
- /* Difference from BSD - they don't do O_APPEND */
- file = filp_open(tmp, O_WRONLY|O_APPEND|O_LARGEFILE, 0);
+ error = acct_on(tmp);
putname(tmp);
- if (IS_ERR(file)) {
- return (PTR_ERR(file));
- }
- if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
- filp_close(file, NULL);
- return (-EACCES);
- }
-
- if (!file->f_op->write) {
- filp_close(file, NULL);
- return (-EIO);
+ } else {
+ error = security_acct(NULL);
+ if (!error) {
+ spin_lock(&acct_globals.lock);
+ acct_file_reopen(NULL);
+ spin_unlock(&acct_globals.lock);
}
}
+ return error;
+}
- error = security_acct(file);
- if (error) {
- if (file)
- filp_close(file, NULL);
- return error;
- }
-
+/**
+ * acct_auto_close - turn off a filesystem's accounting if it is on
+ * @m: vfsmount being shut down
+ *
+ * If the accounting is turned on for a file in the subtree pointed to
+ * to by m, turn accounting off. Done when m is about to die.
+ */
+void acct_auto_close_mnt(struct vfsmount *m)
+{
spin_lock(&acct_globals.lock);
- acct_file_reopen(file);
+ if (acct_globals.file && acct_globals.file->f_vfsmnt == m)
+ acct_file_reopen(NULL);
spin_unlock(&acct_globals.lock);
-
- return (0);
}
/**
@@ -266,8 +298,8 @@
{
spin_lock(&acct_globals.lock);
if (acct_globals.file &&
- acct_globals.file->f_dentry->d_inode->i_sb == sb) {
- acct_file_reopen((struct file *)NULL);
+ acct_globals.file->f_vfsmnt->mnt_sb == sb) {
+ acct_file_reopen(NULL);
}
spin_unlock(&acct_globals.lock);
}
diff --git a/kernel/fork.c b/kernel/fork.c
index efac2c5..158710d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -470,13 +470,6 @@
if (clone_flags & CLONE_VM) {
atomic_inc(&oldmm->mm_users);
mm = oldmm;
- /*
- * There are cases where the PTL is held to ensure no
- * new threads start up in user mode using an mm, which
- * allows optimizing out ipis; the tlb_gather_mmu code
- * is an example.
- */
- spin_unlock_wait(&oldmm->page_table_lock);
goto good_mm;
}
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index f4361c5..1f8d27a 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -61,13 +61,37 @@
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
-typedef struct snd_cs4231 {
+#ifdef SBUS_SUPPORT
+typedef struct sbus_dma_info {
+ spinlock_t lock;
+ int dir;
+ void __iomem *regs;
+} sbus_dma_info_t;
+#endif
+
+typedef struct snd_cs4231 cs4231_t;
+
+typedef struct cs4231_dma_control {
+ void (*prepare)(struct cs4231_dma_control *dma_cont, int dir);
+ void (*enable)(struct cs4231_dma_control *dma_cont, int on);
+ int (*request)(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len);
+ unsigned int (*address)(struct cs4231_dma_control *dma_cont);
+ void (*reset)(cs4231_t *chip);
+ void (*preallocate)(cs4231_t *chip, snd_pcm_t *pcm);
+#ifdef EBUS_SUPPORT
+ struct ebus_dma_info ebus_info;
+#endif
+#ifdef SBUS_SUPPORT
+ struct sbus_dma_info sbus_info;
+#endif
+} cs4231_dma_control_t;
+
+struct snd_cs4231 {
spinlock_t lock;
void __iomem *port;
-#ifdef EBUS_SUPPORT
- struct ebus_dma_info eb2c;
- struct ebus_dma_info eb2p;
-#endif
+
+ cs4231_dma_control_t p_dma;
+ cs4231_dma_control_t c_dma;
u32 flags;
#define CS4231_FLAG_EBUS 0x00000001
@@ -106,7 +130,7 @@
unsigned int irq[2];
unsigned int regs_size;
struct snd_cs4231 *next;
-} cs4231_t;
+};
static cs4231_t *cs4231_list;
@@ -251,6 +275,15 @@
#define APCPNVA 0x38UL /* APC Play DMA Next Address */
#define APCPNC 0x3cUL /* APC Play Next Count */
+/* Defines for SBUS DMA-routines */
+
+#define APCVA 0x0UL /* APC DMA Address */
+#define APCC 0x4UL /* APC Count */
+#define APCNVA 0x8UL /* APC DMA Next Address */
+#define APCNC 0xcUL /* APC Next Count */
+#define APC_PLAY 0x30UL /* Play registers start at 0x30 */
+#define APC_RECORD 0x20UL /* Record registers start at 0x20 */
+
/* APCCSR bits */
#define APC_INT_PENDING 0x800000 /* Interrupt Pending */
@@ -569,8 +602,7 @@
spin_unlock_irqrestore(&chip->lock, flags);
}
-#ifdef EBUS_SUPPORT
-static void snd_cs4231_ebus_advance_dma(struct ebus_dma_info *p, snd_pcm_substream_t *substream, unsigned int *periods_sent)
+static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont, snd_pcm_substream_t *substream, unsigned int *periods_sent)
{
snd_pcm_runtime_t *runtime = substream->runtime;
@@ -581,129 +613,41 @@
if (period_size >= (1 << 24))
BUG();
- if (ebus_dma_request(p, runtime->dma_addr + offset, period_size))
+ if (dma_cont->request(dma_cont, runtime->dma_addr + offset, period_size))
return;
(*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
}
}
-#endif
-
-#ifdef SBUS_SUPPORT
-static void snd_cs4231_sbus_advance_dma(snd_pcm_substream_t *substream, unsigned int *periods_sent)
-{
- cs4231_t *chip = snd_pcm_substream_chip(substream);
- snd_pcm_runtime_t *runtime = substream->runtime;
-
- unsigned int period_size = snd_pcm_lib_period_bytes(substream);
- unsigned int offset = period_size * (*periods_sent % runtime->periods);
-
- if (runtime->period_size > 0xffff + 1)
- BUG();
-
- switch (substream->stream) {
- case SNDRV_PCM_STREAM_PLAYBACK:
- sbus_writel(runtime->dma_addr + offset, chip->port + APCPNVA);
- sbus_writel(period_size, chip->port + APCPNC);
- break;
- case SNDRV_PCM_STREAM_CAPTURE:
- sbus_writel(runtime->dma_addr + offset, chip->port + APCCNVA);
- sbus_writel(period_size, chip->port + APCCNC);
- break;
- }
-
- (*periods_sent) = (*periods_sent + 1) % runtime->periods;
-}
-#endif
static void cs4231_dma_trigger(snd_pcm_substream_t *substream, unsigned int what, int on)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
+ cs4231_dma_control_t *dma_cont;
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- if (what & CS4231_PLAYBACK_ENABLE) {
- if (on) {
- ebus_dma_prepare(&chip->eb2p, 0);
- ebus_dma_enable(&chip->eb2p, 1);
- snd_cs4231_ebus_advance_dma(&chip->eb2p,
- chip->playback_substream,
- &chip->p_periods_sent);
- } else {
- ebus_dma_enable(&chip->eb2p, 0);
- }
- }
- if (what & CS4231_RECORD_ENABLE) {
- if (on) {
- ebus_dma_prepare(&chip->eb2c, 1);
- ebus_dma_enable(&chip->eb2c, 1);
- snd_cs4231_ebus_advance_dma(&chip->eb2c,
- chip->capture_substream,
- &chip->c_periods_sent);
- } else {
- ebus_dma_enable(&chip->eb2c, 0);
- }
- }
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- u32 csr = sbus_readl(chip->port + APCCSR);
- /* I don't know why, but on sbus the period counter must
- * only start counting after the first period is sent.
- * Therefore this dummy thing.
- */
- unsigned int dummy = 0;
-
- switch (what) {
- case CS4231_PLAYBACK_ENABLE:
+ if (what & CS4231_PLAYBACK_ENABLE) {
+ dma_cont = &chip->p_dma;
if (on) {
- csr &= ~APC_XINT_PLAY;
- sbus_writel(csr, chip->port + APCCSR);
-
- csr &= ~APC_PPAUSE;
- sbus_writel(csr, chip->port + APCCSR);
-
- snd_cs4231_sbus_advance_dma(substream, &dummy);
-
- csr |= APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
- APC_XINT_PLAY | APC_XINT_EMPT | APC_XINT_GENL |
- APC_XINT_PENA | APC_PDMA_READY;
- sbus_writel(csr, chip->port + APCCSR);
+ dma_cont->prepare(dma_cont, 0);
+ dma_cont->enable(dma_cont, 1);
+ snd_cs4231_advance_dma(dma_cont,
+ chip->playback_substream,
+ &chip->p_periods_sent);
} else {
- csr |= APC_PPAUSE;
- sbus_writel(csr, chip->port + APCCSR);
-
- csr &= ~APC_PDMA_READY;
- sbus_writel(csr, chip->port + APCCSR);
+ dma_cont->enable(dma_cont, 0);
}
- break;
- case CS4231_RECORD_ENABLE:
+ }
+ if (what & CS4231_RECORD_ENABLE) {
+ dma_cont = &chip->c_dma;
if (on) {
- csr &= ~APC_XINT_CAPT;
- sbus_writel(csr, chip->port + APCCSR);
-
- csr &= ~APC_CPAUSE;
- sbus_writel(csr, chip->port + APCCSR);
-
- snd_cs4231_sbus_advance_dma(substream, &dummy);
-
- csr |= APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
- APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL |
- APC_CDMA_READY;
-
- sbus_writel(csr, chip->port + APCCSR);
+ dma_cont->prepare(dma_cont, 1);
+ dma_cont->enable(dma_cont, 1);
+ snd_cs4231_advance_dma(dma_cont,
+ chip->capture_substream,
+ &chip->c_periods_sent);
} else {
- csr |= APC_CPAUSE;
- sbus_writel(csr, chip->port + APCCSR);
-
- csr &= ~APC_CDMA_READY;
- sbus_writel(csr, chip->port + APCCSR);
+ dma_cont->enable(dma_cont, 0);
}
- break;
}
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
}
static int snd_cs4231_trigger(snd_pcm_substream_t *substream, int cmd)
@@ -1136,10 +1080,7 @@
if (runtime->period_size > 0xffff + 1)
BUG();
- snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (runtime->period_size - 1) & 0x00ff);
- snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (runtime->period_size - 1) >> 8 & 0x00ff);
chip->p_periods_sent = 0;
-
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
@@ -1171,16 +1112,14 @@
static int snd_cs4231_capture_prepare(snd_pcm_substream_t *substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- snd_pcm_runtime_t *runtime = substream->runtime;
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
CS4231_RECORD_PIO);
- snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (runtime->period_size - 1) & 0x00ff);
- snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (runtime->period_size - 1) >> 8 & 0x00ff);
+ chip->c_periods_sent = 0;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
@@ -1199,134 +1138,55 @@
chip->capture_substream->runtime->overrange++;
}
-static irqreturn_t snd_cs4231_generic_interrupt(cs4231_t *chip)
-{
- unsigned long flags;
- unsigned char status;
-
- /*This is IRQ is not raised by the cs4231*/
- if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
- return IRQ_NONE;
-
- status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
-
- if (status & CS4231_TIMER_IRQ) {
- if (chip->timer)
- snd_timer_interrupt(chip->timer, chip->timer->sticks);
- }
-
- if (status & CS4231_RECORD_IRQ)
- snd_cs4231_overrange(chip);
-
- /* ACK the CS4231 interrupt. */
- spin_lock_irqsave(&chip->lock, flags);
- snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
- spin_unlock_irqrestore(&chip->lock, flags);
-
- return 0;
-}
-
-#ifdef SBUS_SUPPORT
-static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- cs4231_t *chip = dev_id;
-
- /* ACK the APC interrupt. */
- u32 csr = sbus_readl(chip->port + APCCSR);
-
- sbus_writel(csr, chip->port + APCCSR);
-
- if ((chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) &&
- (csr & APC_PLAY_INT) &&
- (csr & APC_XINT_PNVA) &&
- !(csr & APC_XINT_EMPT)) {
- snd_cs4231_sbus_advance_dma(chip->playback_substream,
- &chip->p_periods_sent);
- snd_pcm_period_elapsed(chip->playback_substream);
- }
-
- if ((chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) &&
- (csr & APC_CAPT_INT) &&
- (csr & APC_XINT_CNVA)) {
- snd_cs4231_sbus_advance_dma(chip->capture_substream,
- &chip->c_periods_sent);
- snd_pcm_period_elapsed(chip->capture_substream);
- }
-
- return snd_cs4231_generic_interrupt(chip);
-}
-#endif
-
-#ifdef EBUS_SUPPORT
-static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
+static void snd_cs4231_play_callback(cs4231_t *cookie)
{
cs4231_t *chip = cookie;
if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
snd_pcm_period_elapsed(chip->playback_substream);
- snd_cs4231_ebus_advance_dma(p, chip->playback_substream,
+ snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
&chip->p_periods_sent);
}
}
-static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
+static void snd_cs4231_capture_callback(cs4231_t *cookie)
{
cs4231_t *chip = cookie;
if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
snd_pcm_period_elapsed(chip->capture_substream);
- snd_cs4231_ebus_advance_dma(p, chip->capture_substream,
+ snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
&chip->c_periods_sent);
}
}
-#endif
static snd_pcm_uframes_t snd_cs4231_playback_pointer(snd_pcm_substream_t *substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- size_t ptr, residue, period_bytes;
-
+ cs4231_dma_control_t *dma_cont = &chip->p_dma;
+ size_t ptr;
+
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
return 0;
- period_bytes = snd_pcm_lib_period_bytes(substream);
- ptr = period_bytes * chip->p_periods_sent;
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- residue = ebus_dma_residue(&chip->eb2p);
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- residue = sbus_readl(chip->port + APCPC);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
- ptr += period_bytes - residue;
-
+ ptr = dma_cont->address(dma_cont);
+ if (ptr != 0)
+ ptr -= substream->runtime->dma_addr;
+
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_cs4231_capture_pointer(snd_pcm_substream_t * substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- size_t ptr, residue, period_bytes;
+ cs4231_dma_control_t *dma_cont = &chip->c_dma;
+ size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
return 0;
- period_bytes = snd_pcm_lib_period_bytes(substream);
- ptr = period_bytes * chip->c_periods_sent;
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- residue = ebus_dma_residue(&chip->eb2c);
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- residue = sbus_readl(chip->port + APCCC);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
- ptr += period_bytes - residue;
+ ptr = dma_cont->address(dma_cont);
+ if (ptr != 0)
+ ptr -= substream->runtime->dma_addr;
+
return bytes_to_frames(substream->runtime, ptr);
}
@@ -1362,30 +1222,8 @@
spin_lock_irqsave(&chip->lock, flags);
- /* Reset DMA engine. */
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- /* Done by ebus_dma_register */
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
- sbus_writel(0x00, chip->port + APCCSR);
- sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
- chip->port + APCCSR);
-
- udelay(20);
-
- sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
- chip->port + APCCSR);
- sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
- APC_XINT_PENA |
- APC_XINT_CENA),
- chip->port + APCCSR);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
+ /* Reset DMA engine (sbus only). */
+ chip->p_dma.reset(chip);
__cs4231_readb(chip, CS4231P(chip, STATUS)); /* clear any pendings IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
@@ -1505,8 +1343,8 @@
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- chip->playback_substream = NULL;
snd_cs4231_close(chip, CS4231_MODE_PLAY);
+ chip->playback_substream = NULL;
return 0;
}
@@ -1515,8 +1353,8 @@
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- chip->capture_substream = NULL;
snd_cs4231_close(chip, CS4231_MODE_RECORD);
+ chip->capture_substream = NULL;
return 0;
}
@@ -1571,21 +1409,7 @@
pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
strcpy(pcm->name, "CS4231");
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
- snd_dma_pci_data(chip->dev_u.pdev),
- 64*1024, 128*1024);
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
- snd_dma_sbus_data(chip->dev_u.sdev),
- 64*1024, 128*1024);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
+ chip->p_dma.preallocate(chip, pcm);
chip->pcm = pcm;
@@ -1942,6 +1766,180 @@
}
#ifdef SBUS_SUPPORT
+
+static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned long flags;
+ unsigned char status;
+ u32 csr;
+ cs4231_t *chip = dev_id;
+
+ /*This is IRQ is not raised by the cs4231*/
+ if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
+ return IRQ_NONE;
+
+ /* ACK the APC interrupt. */
+ csr = sbus_readl(chip->port + APCCSR);
+
+ sbus_writel(csr, chip->port + APCCSR);
+
+ if ((csr & APC_PDMA_READY) &&
+ (csr & APC_PLAY_INT) &&
+ (csr & APC_XINT_PNVA) &&
+ !(csr & APC_XINT_EMPT))
+ snd_cs4231_play_callback(chip);
+
+ if ((csr & APC_CDMA_READY) &&
+ (csr & APC_CAPT_INT) &&
+ (csr & APC_XINT_CNVA) &&
+ !(csr & APC_XINT_EMPT))
+ snd_cs4231_capture_callback(chip);
+
+ status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
+
+ if (status & CS4231_TIMER_IRQ) {
+ if (chip->timer)
+ snd_timer_interrupt(chip->timer, chip->timer->sticks);
+ }
+
+ if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
+ snd_cs4231_overrange(chip);
+
+ /* ACK the CS4231 interrupt. */
+ spin_lock_irqsave(&chip->lock, flags);
+ snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ return 0;
+}
+
+/*
+ * SBUS DMA routines
+ */
+
+int sbus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
+{
+ unsigned long flags;
+ u32 test, csr;
+ int err;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ if (len >= (1 << 24))
+ return -EINVAL;
+ spin_lock_irqsave(&base->lock, flags);
+ csr = sbus_readl(base->regs + APCCSR);
+ err = -EINVAL;
+ test = APC_CDMA_READY;
+ if ( base->dir == APC_PLAY )
+ test = APC_PDMA_READY;
+ if (!(csr & test))
+ goto out;
+ err = -EBUSY;
+ csr = sbus_readl(base->regs + APCCSR);
+ test = APC_XINT_CNVA;
+ if ( base->dir == APC_PLAY )
+ test = APC_XINT_PNVA;
+ if (!(csr & test))
+ goto out;
+ err = 0;
+ sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
+ sbus_writel(len, base->regs + base->dir + APCNC);
+out:
+ spin_unlock_irqrestore(&base->lock, flags);
+ return err;
+}
+
+void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
+{
+ unsigned long flags;
+ u32 csr, test;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ spin_lock_irqsave(&base->lock, flags);
+ csr = sbus_readl(base->regs + APCCSR);
+ test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
+ APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
+ APC_XINT_PENA;
+ if ( base->dir == APC_RECORD )
+ test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
+ APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
+ csr |= test;
+ sbus_writel(csr, base->regs + APCCSR);
+ spin_unlock_irqrestore(&base->lock, flags);
+}
+
+void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
+{
+ unsigned long flags;
+ u32 csr, shift;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ spin_lock_irqsave(&base->lock, flags);
+ if (!on) {
+ if (base->dir == APC_PLAY) {
+ sbus_writel(0, base->regs + base->dir + APCNVA);
+ sbus_writel(1, base->regs + base->dir + APCC);
+ }
+ else
+ {
+ sbus_writel(0, base->regs + base->dir + APCNC);
+ sbus_writel(0, base->regs + base->dir + APCVA);
+ }
+ }
+ udelay(600);
+ csr = sbus_readl(base->regs + APCCSR);
+ shift = 0;
+ if ( base->dir == APC_PLAY )
+ shift = 1;
+ if (on)
+ csr &= ~(APC_CPAUSE << shift);
+ else
+ csr |= (APC_CPAUSE << shift);
+ sbus_writel(csr, base->regs + APCCSR);
+ if (on)
+ csr |= (APC_CDMA_READY << shift);
+ else
+ csr &= ~(APC_CDMA_READY << shift);
+ sbus_writel(csr, base->regs + APCCSR);
+
+ spin_unlock_irqrestore(&base->lock, flags);
+}
+
+unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
+{
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ return sbus_readl(base->regs + base->dir + APCVA);
+}
+
+void sbus_dma_reset(cs4231_t *chip)
+{
+ sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
+ sbus_writel(0x00, chip->port + APCCSR);
+ sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
+ chip->port + APCCSR);
+
+ udelay(20);
+
+ sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
+ chip->port + APCCSR);
+ sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
+ APC_XINT_PENA |
+ APC_XINT_CENA),
+ chip->port + APCCSR);
+}
+
+void sbus_dma_preallocate(cs4231_t *chip, snd_pcm_t *pcm)
+{
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
+ snd_dma_sbus_data(chip->dev_u.sdev),
+ 64*1024, 128*1024);
+}
+
+/*
+ * Init and exit routines
+ */
+
static int snd_cs4231_sbus_free(cs4231_t *chip)
{
if (chip->irq[0])
@@ -1983,6 +1981,8 @@
return -ENOMEM;
spin_lock_init(&chip->lock);
+ spin_lock_init(&chip->c_dma.sbus_info.lock);
+ spin_lock_init(&chip->p_dma.sbus_info.lock);
init_MUTEX(&chip->mce_mutex);
init_MUTEX(&chip->open_mutex);
chip->card = card;
@@ -1998,6 +1998,25 @@
return -EIO;
}
+ chip->c_dma.sbus_info.regs = chip->port;
+ chip->p_dma.sbus_info.regs = chip->port;
+ chip->c_dma.sbus_info.dir = APC_RECORD;
+ chip->p_dma.sbus_info.dir = APC_PLAY;
+
+ chip->p_dma.prepare = sbus_dma_prepare;
+ chip->p_dma.enable = sbus_dma_enable;
+ chip->p_dma.request = sbus_dma_request;
+ chip->p_dma.address = sbus_dma_addr;
+ chip->p_dma.reset = sbus_dma_reset;
+ chip->p_dma.preallocate = sbus_dma_preallocate;
+
+ chip->c_dma.prepare = sbus_dma_prepare;
+ chip->c_dma.enable = sbus_dma_enable;
+ chip->c_dma.request = sbus_dma_request;
+ chip->c_dma.address = sbus_dma_addr;
+ chip->c_dma.reset = sbus_dma_reset;
+ chip->c_dma.preallocate = sbus_dma_preallocate;
+
if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
SA_SHIRQ, "cs4231", chip)) {
snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %s\n",
@@ -2051,15 +2070,70 @@
#endif
#ifdef EBUS_SUPPORT
+
+static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
+{
+ cs4231_t *chip = cookie;
+
+ snd_cs4231_play_callback(chip);
+}
+
+static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
+{
+ cs4231_t *chip = cookie;
+
+ snd_cs4231_capture_callback(chip);
+}
+
+/*
+ * EBUS DMA wrappers
+ */
+
+int _ebus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
+{
+ return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
+}
+
+void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
+{
+ ebus_dma_enable(&dma_cont->ebus_info, on);
+}
+
+void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
+{
+ ebus_dma_prepare(&dma_cont->ebus_info, dir);
+}
+
+unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
+{
+ return ebus_dma_addr(&dma_cont->ebus_info);
+}
+
+void _ebus_dma_reset(cs4231_t *chip)
+{
+ return;
+}
+
+void _ebus_dma_preallocate(cs4231_t *chip, snd_pcm_t *pcm)
+{
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(chip->dev_u.pdev),
+ 64*1024, 128*1024);
+}
+
+/*
+ * Init and exit routines
+ */
+
static int snd_cs4231_ebus_free(cs4231_t *chip)
{
- if (chip->eb2c.regs) {
- ebus_dma_unregister(&chip->eb2c);
- iounmap(chip->eb2c.regs);
+ if (chip->c_dma.ebus_info.regs) {
+ ebus_dma_unregister(&chip->c_dma.ebus_info);
+ iounmap(chip->c_dma.ebus_info.regs);
}
- if (chip->eb2p.regs) {
- ebus_dma_unregister(&chip->eb2p);
- iounmap(chip->eb2p.regs);
+ if (chip->p_dma.ebus_info.regs) {
+ ebus_dma_unregister(&chip->p_dma.ebus_info);
+ iounmap(chip->p_dma.ebus_info.regs);
}
if (chip->port)
@@ -2097,8 +2171,8 @@
return -ENOMEM;
spin_lock_init(&chip->lock);
- spin_lock_init(&chip->eb2c.lock);
- spin_lock_init(&chip->eb2p.lock);
+ spin_lock_init(&chip->c_dma.ebus_info.lock);
+ spin_lock_init(&chip->p_dma.ebus_info.lock);
init_MUTEX(&chip->mce_mutex);
init_MUTEX(&chip->open_mutex);
chip->flags |= CS4231_FLAG_EBUS;
@@ -2106,43 +2180,57 @@
chip->dev_u.pdev = edev->bus->self;
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
- strcpy(chip->eb2c.name, "cs4231(capture)");
- chip->eb2c.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
- chip->eb2c.callback = snd_cs4231_ebus_capture_callback;
- chip->eb2c.client_cookie = chip;
- chip->eb2c.irq = edev->irqs[0];
- strcpy(chip->eb2p.name, "cs4231(play)");
- chip->eb2p.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
- chip->eb2p.callback = snd_cs4231_ebus_play_callback;
- chip->eb2p.client_cookie = chip;
- chip->eb2p.irq = edev->irqs[1];
+ strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
+ chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
+ chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
+ chip->c_dma.ebus_info.client_cookie = chip;
+ chip->c_dma.ebus_info.irq = edev->irqs[0];
+ strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
+ chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
+ chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
+ chip->p_dma.ebus_info.client_cookie = chip;
+ chip->p_dma.ebus_info.irq = edev->irqs[1];
+
+ chip->p_dma.prepare = _ebus_dma_prepare;
+ chip->p_dma.enable = _ebus_dma_enable;
+ chip->p_dma.request = _ebus_dma_request;
+ chip->p_dma.address = _ebus_dma_addr;
+ chip->p_dma.reset = _ebus_dma_reset;
+ chip->p_dma.preallocate = _ebus_dma_preallocate;
+
+ chip->c_dma.prepare = _ebus_dma_prepare;
+ chip->c_dma.enable = _ebus_dma_enable;
+ chip->c_dma.request = _ebus_dma_request;
+ chip->c_dma.address = _ebus_dma_addr;
+ chip->c_dma.reset = _ebus_dma_reset;
+ chip->c_dma.preallocate = _ebus_dma_preallocate;
chip->port = ioremap(edev->resource[0].start, 0x10);
- chip->eb2p.regs = ioremap(edev->resource[1].start, 0x10);
- chip->eb2c.regs = ioremap(edev->resource[2].start, 0x10);
- if (!chip->port || !chip->eb2p.regs || !chip->eb2c.regs) {
+ chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
+ chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
+ if (!chip->port || !chip->p_dma.ebus_info.regs || !chip->c_dma.ebus_info.regs) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
- if (ebus_dma_register(&chip->eb2c)) {
+ if (ebus_dma_register(&chip->c_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
return -EBUSY;
}
- if (ebus_dma_irq_enable(&chip->eb2c, 1)) {
+ if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
return -EBUSY;
}
- if (ebus_dma_register(&chip->eb2p)) {
+ if (ebus_dma_register(&chip->p_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n", dev);
return -EBUSY;
}
- if (ebus_dma_irq_enable(&chip->eb2p, 1)) {
+ if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
return -EBUSY;