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| author | Rob Clark <robdclark@chromium.org> | 2020-12-15 06:03:14 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 23:13:36 +0300 |
| commit | f630c7c6f10546ebff15c3a856e7949feb7a2372 (patch) | |
| tree | b21e48738e7593486afdcfded9479a30f868a85a /kernel | |
| parent | 2c85ebc57b3e1817b6ce1a6b703928e113a90442 (diff) | |
| download | linux-f630c7c6f10546ebff15c3a856e7949feb7a2372.tar.xz | |
kthread: add kthread_work tracepoints
While migrating some code from wq to kthread_worker, I found that I missed
the execute_start/end tracepoints. So add similar tracepoints for
kthread_work. And for completeness, queue_work tracepoint (although this
one differs slightly from the matching workqueue tracepoint).
Link: https://lkml.kernel.org/r/20201010180323.126634-1-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Cc: Rob Clark <robdclark@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Phil Auld <pauld@redhat.com>
Cc: Valentin Schneider <valentin.schneider@arm.com>
Cc: Thara Gopinath <thara.gopinath@linaro.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Vincent Donnefort <vincent.donnefort@arm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Ilias Stamatis <stamatis.iliass@gmail.com>
Cc: Liang Chen <cl@rock-chips.com>
Cc: Ben Dooks <ben.dooks@codethink.co.uk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "J. Bruce Fields" <bfields@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kthread.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index 933a625621b8..34516b0a6eb7 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -704,8 +704,15 @@ repeat: raw_spin_unlock_irq(&worker->lock); if (work) { + kthread_work_func_t func = work->func; __set_current_state(TASK_RUNNING); + trace_sched_kthread_work_execute_start(work); work->func(work); + /* + * Avoid dereferencing work after this point. The trace + * event only cares about the address. + */ + trace_sched_kthread_work_execute_end(work, func); } else if (!freezing(current)) schedule(); @@ -834,6 +841,8 @@ static void kthread_insert_work(struct kthread_worker *worker, { kthread_insert_work_sanity_check(worker, work); + trace_sched_kthread_work_queue_work(worker, work); + list_add_tail(&work->node, pos); work->worker = worker; if (!worker->current_work && likely(worker->task)) |