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Subject[PATCH 2/6] aoe: add AoE-target files to debugfs
From
Date
Signed-off-by: Ed Cashin <ecashin@coraid.com>
---
drivers/block/aoe/aoe.h | 2 ++
drivers/block/aoe/aoeblk.c | 35 +++++++++++++++++++++++++++++++++++
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 025c41d..b1f24c5 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 cb508b7..d76c5cb 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 784c92e..c904767 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);
--
1.7.1


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