* [PATCH] btrfs: create example debugfs file only in debugging build
@ 2016-09-01 12:44 David Sterba
2016-09-01 14:33 ` Eric Sandeen
0 siblings, 1 reply; 2+ messages in thread
From: David Sterba @ 2016-09-01 12:44 UTC (permalink / raw)
To: linux-btrfs; +Cc: David Sterba
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/sysfs.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 804bd1c42e47..31f09564e170 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 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;
}
--
2.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] btrfs: create example debugfs file only in debugging build
2016-09-01 12:44 [PATCH] btrfs: create example debugfs file only in debugging build David Sterba
@ 2016-09-01 14:33 ` Eric Sandeen
0 siblings, 0 replies; 2+ messages in thread
From: Eric Sandeen @ 2016-09-01 14:33 UTC (permalink / raw)
To: David Sterba, linux-btrfs
On 9/1/16 7:44 AM, David Sterba wrote:
> Signed-off-by: David Sterba <dsterba@suse.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
> ---
> fs/btrfs/sysfs.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
> index 804bd1c42e47..31f09564e170 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 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;
> }
>
>
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2016-09-01 12:44 [PATCH] btrfs: create example debugfs file only in debugging build David Sterba
2016-09-01 14:33 ` Eric Sandeen
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