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authorQu Wenruo <quwenruo@cn.fujitsu.com>2014-03-12 08:05:33 +0000
committerChris Mason <clm@fb.com>2014-03-20 17:15:28 -0700
commitc3a468915a384c0015263edd9b7263775599a323 (patch)
tree433ed892fc1733ddb28bf1bf2ac61bdac5b42398 /fs/btrfs/async-thread.c
parentf094c9bd3e12ee83e91f4249b600d4d2ac0a4738 (diff)
btrfs: Add trace for btrfs_workqueue alloc/destroy
Since most of the btrfs_workqueue is printed as pointer address, for easier analysis, add trace for btrfs_workqueue alloc/destroy. So it is possible to determine the workqueue that a given work belongs to(by comparing the wq pointer address with alloc trace event). Signed-off-by: Qu Wenruo <quenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/async-thread.c')
-rw-r--r--fs/btrfs/async-thread.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 66532b8f0f7c..ecb5832c0967 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -56,7 +56,8 @@ struct btrfs_workqueue {
};
static inline struct __btrfs_workqueue
-*__btrfs_alloc_workqueue(char *name, int flags, int max_active, int thresh)
+*__btrfs_alloc_workqueue(const char *name, int flags, int max_active,
+ int thresh)
{
struct __btrfs_workqueue *ret = kzalloc(sizeof(*ret), GFP_NOFS);
@@ -92,13 +93,14 @@ static inline struct __btrfs_workqueue
INIT_LIST_HEAD(&ret->ordered_list);
spin_lock_init(&ret->list_lock);
spin_lock_init(&ret->thres_lock);
+ trace_btrfs_workqueue_alloc(ret, name, flags & WQ_HIGHPRI);
return ret;
}
static inline void
__btrfs_destroy_workqueue(struct __btrfs_workqueue *wq);
-struct btrfs_workqueue *btrfs_alloc_workqueue(char *name,
+struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
int flags,
int max_active,
int thresh)
@@ -305,6 +307,7 @@ static inline void
__btrfs_destroy_workqueue(struct __btrfs_workqueue *wq)
{
destroy_workqueue(wq->normal_wq);
+ trace_btrfs_workqueue_destroy(wq);
kfree(wq);
}