diff options
| author | Ed Cashin <ecashin@coraid.com> | 2013-09-12 01:25:40 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 02:59:23 +0400 |
| commit | e8866cf2b90f3a29859d2113c0fd23daf189c282 (patch) | |
| tree | df02943b3755d6a284c6fd215a5c709f48d0be1d | |
| parent | 190519cd30884215a63ed875ac074dc97a602522 (diff) | |
| download | linux-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.h | 2 | ||||
| -rw-r--r-- | drivers/block/aoe/aoeblk.c | 35 | ||||
| -rw-r--r-- | drivers/block/aoe/aoedev.c | 1 |
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); |