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| author | David Sterba <dsterba@suse.com> | 2016-09-01 14:37:53 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-09-26 17:59:49 +0200 |
| commit | b0de6c4c81099494d7863a31db06366f74395cda (patch) | |
| tree | f792d52b7a9b09dd00eedaed99dafa8757e197a8 /fs | |
| parent | 07f6a480436595394a06a69d0ebc18fef6736197 (diff) | |
| download | linux-stable-b0de6c4c81099494d7863a31db06366f74395cda.tar.gz linux-stable-b0de6c4c81099494d7863a31db06366f74395cda.tar.bz2 linux-stable-b0de6c4c81099494d7863a31db06366f74395cda.zip | |
btrfs: create example debugfs file only in debugging build
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/sysfs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 804bd1c42e47..e498a472ac20 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -836,9 +836,18 @@ static int btrfs_init_debugfs(void) if (!btrfs_debugfs_root_dentry) return -ENOMEM; + /* + * Example code, how to export data through debugfs. + * + * file: /sys/kernel/debug/btrfs/test + * contents of: btrfs_debugfs_test + */ +#ifdef CONFIG_BTRFS_DEBUG debugfs_create_u64("test", S_IRUGO | S_IWUSR, btrfs_debugfs_root_dentry, &btrfs_debugfs_test); #endif + +#endif return 0; } |