Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6
Pull a fix for the recent irqdomain bug fixes from Grant Likely:
"I flubbed one patch in the last pull request which broke a format
string on 64 bit platforms. Here's the fix."
* tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6:
irq_domain: fix type mismatch in debugfs output format
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 709e08e..03ca210 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -531,3 +531,11 @@
of ASLR. It was only ever intended for debugging, so it should be
removed.
Who: Kees Cook <keescook@chromium.org>
+
+----------------------------
+
+What: setitimer accepts user NULL pointer (value)
+When: 3.6
+Why: setitimer is not returning -EFAULT if user pointer is NULL. This
+ violates the spec.
+Who: Sasikantha Babu <sasikanth.v19@gmail.com>
diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
index b3b7332..99480e5 100644
--- a/arch/x86/include/asm/cmpxchg.h
+++ b/arch/x86/include/asm/cmpxchg.h
@@ -43,7 +43,7 @@
switch (sizeof(*(ptr))) { \
case __X86_CASE_B: \
asm volatile (lock #op "b %b0, %1\n" \
- : "+r" (__ret), "+m" (*(ptr)) \
+ : "+q" (__ret), "+m" (*(ptr)) \
: : "memory", "cc"); \
break; \
case __X86_CASE_W: \
@@ -173,7 +173,7 @@
switch (sizeof(*(ptr))) { \
case __X86_CASE_B: \
asm volatile (lock "addb %b1, %0\n" \
- : "+m" (*(ptr)) : "ri" (inc) \
+ : "+m" (*(ptr)) : "qi" (inc) \
: "memory", "cc"); \
break; \
case __X86_CASE_W: \
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index f386dc4..7515cf0e 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -216,9 +216,9 @@
current_thread_info()->sig_on_uaccess_error = 1;
/*
- * 0 is a valid user pointer (in the access_ok sense) on 32-bit and
+ * NULL is a valid user pointer (in the access_ok sense) on 32-bit and
* 64-bit, so we don't need to special-case it here. For all the
- * vsyscalls, 0 means "don't write anything" not "write it at
+ * vsyscalls, NULL means "don't write anything" not "write it at
* address 0".
*/
ret = -EFAULT;
@@ -247,7 +247,7 @@
ret = sys_getcpu((unsigned __user *)regs->di,
(unsigned __user *)regs->si,
- 0);
+ NULL);
break;
}
diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 82e8820..6b5cf02 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -23,7 +23,6 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/delay.h>
-#include <linux/async.h>
#include <asm/io.h>
/*
@@ -180,15 +179,17 @@
/* Number of reads we try to get two different values */
#define ACPI_PM_READ_CHECKS 10000
-static void __init acpi_pm_clocksource_async(void *unused, async_cookie_t cookie)
+static int __init init_acpi_pm_clocksource(void)
{
cycle_t value1, value2;
unsigned int i, j = 0;
+ if (!pmtmr_ioport)
+ return -ENODEV;
/* "verify" this timing source: */
for (j = 0; j < ACPI_PM_MONOTONICITY_CHECKS; j++) {
- usleep_range(100 * j, 100 * j + 100);
+ udelay(100 * j);
value1 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
for (i = 0; i < ACPI_PM_READ_CHECKS; i++) {
value2 = clocksource_acpi_pm.read(&clocksource_acpi_pm);
@@ -202,34 +203,25 @@
" 0x%#llx, 0x%#llx - aborting.\n",
value1, value2);
pmtmr_ioport = 0;
- return;
+ return -EINVAL;
}
if (i == ACPI_PM_READ_CHECKS) {
printk(KERN_INFO "PM-Timer failed consistency check "
" (0x%#llx) - aborting.\n", value1);
pmtmr_ioport = 0;
- return;
+ return -ENODEV;
}
}
if (verify_pmtmr_rate() != 0){
pmtmr_ioport = 0;
- return;
+ return -ENODEV;
}
- clocksource_register_hz(&clocksource_acpi_pm,
+ return clocksource_register_hz(&clocksource_acpi_pm,
PMTMR_TICKS_PER_SEC);
}
-static int __init init_acpi_pm_clocksource(void)
-{
- if (!pmtmr_ioport)
- return -ENODEV;
-
- async_schedule(acpi_pm_clocksource_async, NULL);
- return 0;
-}
-
/* We use fs_initcall because we want the PCI fixups to have run
* but we still need to load before device_initcall
*/
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 6a0c62d..64c3b31 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -18,19 +18,39 @@
#ifndef arch_irq_stat
#define arch_irq_stat() 0
#endif
-#ifndef arch_idle_time
-#define arch_idle_time(cpu) 0
-#endif
+
+#ifdef arch_idle_time
+
+static cputime64_t get_idle_time(int cpu)
+{
+ cputime64_t idle;
+
+ idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
+ if (cpu_online(cpu) && !nr_iowait_cpu(cpu))
+ idle += arch_idle_time(cpu);
+ return idle;
+}
+
+static cputime64_t get_iowait_time(int cpu)
+{
+ cputime64_t iowait;
+
+ iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
+ if (cpu_online(cpu) && nr_iowait_cpu(cpu))
+ iowait += arch_idle_time(cpu);
+ return iowait;
+}
+
+#else
static u64 get_idle_time(int cpu)
{
u64 idle, idle_time = get_cpu_idle_time_us(cpu, NULL);
- if (idle_time == -1ULL) {
+ if (idle_time == -1ULL)
/* !NO_HZ so we can rely on cpustat.idle */
idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
- idle += arch_idle_time(cpu);
- } else
+ else
idle = usecs_to_cputime64(idle_time);
return idle;
@@ -49,6 +69,8 @@
return iowait;
}
+#endif
+
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
diff --git a/kernel/itimer.c b/kernel/itimer.c
index 22000c3..8d262b4 100644
--- a/kernel/itimer.c
+++ b/kernel/itimer.c
@@ -284,8 +284,12 @@
if (value) {
if(copy_from_user(&set_buffer, value, sizeof(set_buffer)))
return -EFAULT;
- } else
- memset((char *) &set_buffer, 0, sizeof(set_buffer));
+ } else {
+ memset(&set_buffer, 0, sizeof(set_buffer));
+ printk_once(KERN_WARNING "%s calls setitimer() with new_value NULL pointer."
+ " Misfeature support will be removed\n",
+ current->comm);
+ }
error = do_setitimer(which, &set_buffer, ovalue ? &get_buffer : NULL);
if (error || !ovalue)
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index 2cf9cc7..a20dc8a 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -1,6 +1,10 @@
#
# Timer subsystem related configuration options
#
+
+# Core internal switch. Selected by NO_HZ / HIGH_RES_TIMERS. This is
+# only related to the tick functionality. Oneshot clockevent devices
+# are supported independ of this.
config TICK_ONESHOT
bool
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index e883f57..bf57abd 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -575,10 +575,12 @@
unsigned long flags;
raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
+
+ tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT;
+
if (cpumask_empty(tick_get_broadcast_mask()))
goto end;
- tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT;
bc = tick_broadcast_device.evtdev;
if (bc)
tick_broadcast_setup_oneshot(bc);
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 3526038..6a3a5b9 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -534,9 +534,9 @@
hrtimer_get_expires(&ts->sched_timer), 0))
break;
}
- /* Update jiffies and reread time */
- tick_do_update_jiffies64(now);
+ /* Reread time and update jiffies */
now = ktime_get();
+ tick_do_update_jiffies64(now);
}
}
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index fb8b5f8..1cad3af 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -17,6 +17,7 @@
#include "util/debug.h"
#include <sys/prctl.h>
+#include <sys/resource.h>
#include <semaphore.h>
#include <pthread.h>