[RFC 06/29] staging/android: create a 'sync' dir for debugfs information

From: Gustavo Padovan
Date: Fri Jan 15 2016 - 09:56:15 EST


From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>

Creates the 'sync' dir on debugfs root dir and move the 'sync' file
to sync/info. This is the preparation to add more debug info and control.

Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
---
drivers/staging/android/sync_debug.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/android/sync_debug.c b/drivers/staging/android/sync_debug.c
index f45d13c..86d683b 100644
--- a/drivers/staging/android/sync_debug.c
+++ b/drivers/staging/android/sync_debug.c
@@ -15,6 +15,7 @@
*/

#include <linux/debugfs.h>
+#include <linux/module.h>
#include <linux/export.h>
#include <linux/file.h>
#include <linux/fs.h>
@@ -30,6 +31,8 @@

#ifdef CONFIG_DEBUG_FS

+static struct dentry *dbgfs;
+
static LIST_HEAD(sync_timeline_list_head);
static DEFINE_SPINLOCK(sync_timeline_list_lock);
static LIST_HEAD(sync_fence_list_head);
@@ -208,13 +211,13 @@ static int sync_debugfs_show(struct seq_file *s, void *unused)
return 0;
}

-static int sync_debugfs_open(struct inode *inode, struct file *file)
+static int sync_info_debugfs_open(struct inode *inode, struct file *file)
{
return single_open(file, sync_debugfs_show, inode->i_private);
}

-static const struct file_operations sync_debugfs_fops = {
- .open = sync_debugfs_open,
+static const struct file_operations sync_info_debugfs_fops = {
+ .open = sync_info_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
@@ -222,11 +225,21 @@ static const struct file_operations sync_debugfs_fops = {

static __init int sync_debugfs_init(void)
{
- debugfs_create_file("sync", S_IRUGO, NULL, NULL, &sync_debugfs_fops);
+ dbgfs = debugfs_create_dir("sync", NULL);
+
+ debugfs_create_file("info", 0444, dbgfs, NULL, &sync_info_debugfs_fops);
+
return 0;
}
late_initcall(sync_debugfs_init);

+static __exit void sync_debugfs_exit(void)
+{
+ if (dbgfs)
+ debugfs_remove_recursive(dbgfs);
+}
+module_exit(sync_debugfs_exit);
+
#define DUMP_CHUNK 256
static char sync_dump_buf[64 * 1024];
void sync_dump(void)
--
2.5.0