UPSTREAM: binder: Make transaction_log available in binderfs
Currently, the binder transaction log files 'transaction_log'
and 'failed_transaction_log' live in debugfs at the following locations:
/sys/kernel/debug/binder/failed_transaction_log
/sys/kernel/debug/binder/transaction_log
This patch makes these files also available in a binderfs instance
mounted with the mount option "stats=global".
It does not affect the presence of these files in debugfs.
If a binderfs instance is mounted at path /dev/binderfs, the location of
these files will be as follows:
/dev/binderfs/binder_logs/failed_transaction_log
/dev/binderfs/binder_logs/transaction_log
This change provides an alternate option to access these files when
debugfs is not mounted.
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Link: https://lore.kernel.org/r/20190903161655.107408-4-hridya@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 136497735
(cherry picked from commit c31e73121f4c1ec41143423ac6ce3ce6dafdcec1)
Change-Id: I20d9e6c4c7115297f9740cc42a516c315b3a209e
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index f85cbd6..e3b5d61 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -201,30 +201,8 @@
atomic_inc(&binder_stats.obj_created[type]);
}
-struct binder_transaction_log_entry {
- int debug_id;
- int debug_id_done;
- int call_type;
- int from_proc;
- int from_thread;
- int target_handle;
- int to_proc;
- int to_thread;
- int to_node;
- int data_size;
- int offsets_size;
- int return_error_line;
- uint32_t return_error;
- uint32_t return_error_param;
- const char *context_name;
-};
-struct binder_transaction_log {
- atomic_t cur;
- bool full;
- struct binder_transaction_log_entry entry[32];
-};
-static struct binder_transaction_log binder_transaction_log;
-static struct binder_transaction_log binder_transaction_log_failed;
+struct binder_transaction_log binder_transaction_log;
+struct binder_transaction_log binder_transaction_log_failed;
static struct binder_transaction_log_entry *binder_transaction_log_add(
struct binder_transaction_log *log)
@@ -5993,7 +5971,7 @@
"\n" : " (incomplete)\n");
}
-static int transaction_log_show(struct seq_file *m, void *unused)
+int binder_transaction_log_show(struct seq_file *m, void *unused)
{
struct binder_transaction_log *log = m->private;
unsigned int log_cur = atomic_read(&log->cur);
@@ -6025,8 +6003,6 @@
.release = binder_release,
};
-DEFINE_SHOW_ATTRIBUTE(transaction_log);
-
static int __init init_binder_device(const char *name)
{
int ret;
@@ -6095,12 +6071,12 @@
0444,
binder_debugfs_dir_entry_root,
&binder_transaction_log,
- &transaction_log_fops);
+ &binder_transaction_log_fops);
debugfs_create_file("failed_transaction_log",
0444,
binder_debugfs_dir_entry_root,
&binder_transaction_log_failed,
- &transaction_log_fops);
+ &binder_transaction_log_fops);
}
if (!IS_ENABLED(CONFIG_ANDROID_BINDERFS) &&