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| author | Tejun Heo <tj@kernel.org> | 2010-10-05 10:49:55 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-10-05 10:49:55 +0200 |
| commit | cdadf0097cdca06c497ffaeb5982e028c6e4ed38 (patch) | |
| tree | e02400ea54981e9621a30d3a2ce013e14f657e2e /kernel | |
| parent | 97bd234701b2b39a0e749c1fe0e44f1d14c94292 (diff) | |
| download | blackbird-obmc-linux-cdadf0097cdca06c497ffaeb5982e028c6e4ed38.tar.gz blackbird-obmc-linux-cdadf0097cdca06c497ffaeb5982e028c6e4ed38.zip | |
workqueue: add queue_work and activate_work trace points
These two tracepoints allow tracking when and how a work is queued and
activated. This patch is based on Frederic's patch to add queue_work
trace point.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/workqueue.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 026f778e879b..cb2ccfbed0c6 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -997,6 +997,7 @@ static void __queue_work(unsigned int cpu, struct workqueue_struct *wq, /* gcwq determined, get cwq and queue */ cwq = get_cwq(gcwq->cpu, wq); + trace_workqueue_queue_work(cpu, cwq, work); BUG_ON(!list_empty(&work->entry)); @@ -1004,6 +1005,7 @@ static void __queue_work(unsigned int cpu, struct workqueue_struct *wq, work_flags = work_color_to_flags(cwq->work_color); if (likely(cwq->nr_active < cwq->max_active)) { + trace_workqueue_activate_work(work); cwq->nr_active++; worklist = gcwq_determine_ins_pos(gcwq, cwq); } else { @@ -1679,6 +1681,7 @@ static void cwq_activate_first_delayed(struct cpu_workqueue_struct *cwq) struct work_struct, entry); struct list_head *pos = gcwq_determine_ins_pos(cwq->gcwq, cwq); + trace_workqueue_activate_work(work); move_linked_works(work, pos, NULL); __clear_bit(WORK_STRUCT_DELAYED_BIT, work_data_bits(work)); cwq->nr_active++; |
