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authorEd Cashin <ecashin@coraid.com>2013-09-12 01:25:40 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 02:59:23 +0400
commite8866cf2b90f3a29859d2113c0fd23daf189c282 (patch)
treedf02943b3755d6a284c6fd215a5c709f48d0be1d
parent190519cd30884215a63ed875ac074dc97a602522 (diff)
downloadlinux-e8866cf2b90f3a29859d2113c0fd23daf189c282.tar.xz
aoe: add AoE-target files to debugfs
Signed-off-by: Ed Cashin <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/block/aoe/aoe.h2
-rw-r--r--drivers/block/aoe/aoeblk.c35
-rw-r--r--drivers/block/aoe/aoedev.c1
3 files changed, 38 insertions, 0 deletions
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index 025c41d3cb33..b1f24c5a6bd1 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -169,6 +169,7 @@ struct aoedev {
ulong ref;
struct work_struct work;/* disk create work struct */
struct gendisk *gd;
+ struct dentry *debugfs;
struct request_queue *blkq;
struct hd_geometry geo;
sector_t ssize;
@@ -206,6 +207,7 @@ struct ktstate {
int aoeblk_init(void);
void aoeblk_exit(void);
void aoeblk_gdalloc(void *);
+void aoedisk_rm_debugfs(struct aoedev *d);
void aoedisk_rm_sysfs(struct aoedev *d);
int aoechr_init(void);
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index cb508b754377..d76c5cb3c708 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -132,6 +132,40 @@ static const struct attribute_group attr_group = {
.attrs = aoe_attrs,
};
+static const struct file_operations aoe_debugfs_fops;
+
+static void
+aoedisk_add_debugfs(struct aoedev *d)
+{
+ struct dentry *entry;
+ char *p;
+
+ if (aoe_debugfs_dir == NULL)
+ return;
+ p = strchr(d->gd->disk_name, '/');
+ if (p == NULL)
+ p = d->gd->disk_name;
+ else
+ p++;
+ BUG_ON(*p == '\0');
+ entry = debugfs_create_file(p, 0444, aoe_debugfs_dir, d,
+ &aoe_debugfs_fops);
+ if (IS_ERR_OR_NULL(entry)) {
+ pr_info("aoe: cannot create debugfs file for %s\n",
+ d->gd->disk_name);
+ return;
+ }
+ BUG_ON(d->debugfs);
+ d->debugfs = entry;
+}
+void
+aoedisk_rm_debugfs(struct aoedev *d)
+{
+ BUG_ON(d->debugfs == NULL);
+ debugfs_remove(d->debugfs);
+ d->debugfs = NULL;
+}
+
static int
aoedisk_add_sysfs(struct aoedev *d)
{
@@ -332,6 +366,7 @@ aoeblk_gdalloc(void *vp)
add_disk(gd);
aoedisk_add_sysfs(d);
+ aoedisk_add_debugfs(d);
spin_lock_irqsave(&d->lock, flags);
WARN_ON(!(d->flags & DEVFL_GD_NOW));
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 784c92e038d1..c9047675dfc9 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -278,6 +278,7 @@ freedev(struct aoedev *d)
del_timer_sync(&d->timer);
if (d->gd) {
+ aoedisk_rm_debugfs(d);
aoedisk_rm_sysfs(d);
del_gendisk(d->gd);
put_disk(d->gd);