btrfs: Add ftrace for btrfs_workqueue
Add ftrace for btrfs_workqueue for further workqueue tunning.
This patch needs to applied after the workqueue replace patchset.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index d8c07e5..00623dd 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -24,6 +24,7 @@
#include <linux/freezer.h>
#include <linux/workqueue.h>
#include "async-thread.h"
+#include "ctree.h"
#define WORK_DONE_BIT 0
#define WORK_ORDER_DONE_BIT 1
@@ -210,6 +211,7 @@
*/
if (test_and_set_bit(WORK_ORDER_DONE_BIT, &work->flags))
break;
+ trace_btrfs_ordered_sched(work);
spin_unlock_irqrestore(lock, flags);
work->ordered_func(work);
@@ -223,6 +225,7 @@
* with the lock held though
*/
work->ordered_free(work);
+ trace_btrfs_all_work_done(work);
}
spin_unlock_irqrestore(lock, flags);
}
@@ -246,12 +249,15 @@
need_order = 1;
wq = work->wq;
+ trace_btrfs_work_sched(work);
thresh_exec_hook(wq);
work->func(work);
if (need_order) {
set_bit(WORK_DONE_BIT, &work->flags);
run_ordered_work(wq);
}
+ if (!need_order)
+ trace_btrfs_all_work_done(work);
}
void btrfs_init_work(struct btrfs_work *work,
@@ -280,6 +286,7 @@
spin_unlock_irqrestore(&wq->list_lock, flags);
}
queue_work(wq->normal_wq, &work->normal_work);
+ trace_btrfs_work_queued(work);
}
void btrfs_queue_work(struct btrfs_workqueue *wq,