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binder: Add stats, state and transactions files

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The following binder stat files currently live in debugfs.

/sys/kernel/debug/binder/state
/sys/kernel/debug/binder/stats
/sys/kernel/debug/binder/transactions

This patch makes these files available in a binderfs instance
mounted with the mount option 'stats=global'. For example, if a binderfs
instance is mounted at path /dev/binderfs, the above files will be
available at the following locations:

/dev/binderfs/binder_logs/state
/dev/binderfs/binder_logs/stats
/dev/binderfs/binder_logs/transactions

This provides a way to access them even when debugfs is not mounted.

Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20190903161655.107408-3-hridya@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hridya Valsaraju
2019-09-03 09:16:53 -07:00
committed by Greg Kroah-Hartman
parent f00834518e
commit 0e13e452da
3 changed files with 153 additions and 10 deletions
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15
drivers/android/binder.c
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@@ -5907,7 +5907,7 @@ static void print_binder_proc_stats(struct seq_file *m,
}
static int state_show(struct seq_file *m, void *unused)
int binder_state_show(struct seq_file *m, void *unused)
{
struct binder_proc *proc;
struct binder_node *node;
@@ -5946,7 +5946,7 @@ static int state_show(struct seq_file *m, void *unused)
return 0;
}
static int stats_show(struct seq_file *m, void *unused)
int binder_stats_show(struct seq_file *m, void *unused)
{
struct binder_proc *proc;
@@ -5962,7 +5962,7 @@ static int stats_show(struct seq_file *m, void *unused)
return 0;
}
static int transactions_show(struct seq_file *m, void *unused)
int binder_transactions_show(struct seq_file *m, void *unused)
{
struct binder_proc *proc;
@@ -6050,9 +6050,6 @@ const struct file_operations binder_fops = {
.release = binder_release,
};
DEFINE_SHOW_ATTRIBUTE(state);
DEFINE_SHOW_ATTRIBUTE(stats);
DEFINE_SHOW_ATTRIBUTE(transactions);
DEFINE_SHOW_ATTRIBUTE(transaction_log);
static int __init init_binder_device(const char *name)
@@ -6108,17 +6105,17 @@ static int __init binder_init(void)
0444,
binder_debugfs_dir_entry_root,
NULL,
&state_fops);
&binder_state_fops);
debugfs_create_file("stats",
0444,
binder_debugfs_dir_entry_root,
NULL,
&stats_fops);
&binder_stats_fops);
debugfs_create_file("transactions",
0444,
binder_debugfs_dir_entry_root,
NULL,
&transactions_fops);
&binder_transactions_fops);
debugfs_create_file("transaction_log",
0444,
binder_debugfs_dir_entry_root,