Messages in this thread Patch in this message | | | Date | Thu, 16 Sep 2021 11:59:28 -0000 | From | "tip-bot2 for Yafang Shao" <> | Subject | [tip: sched/core] sched/rt: Support sched_stat_runtime tracepoint for RT sched class |
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The following commit has been merged into the sched/core branch of tip:
Commit-ID: 75ded49a19c6b655bba7ff9e5541daef4f882d78 Gitweb: https://git.kernel.org/tip/75ded49a19c6b655bba7ff9e5541daef4f882d78 Author: Yafang Shao <laoar.shao@gmail.com> AuthorDate: Sun, 05 Sep 2021 14:35:44 Committer: Peter Zijlstra <peterz@infradead.org> CommitterDate: Wed, 15 Sep 2021 17:48:59 +02:00
sched/rt: Support sched_stat_runtime tracepoint for RT sched class
The runtime of a RT task has already been there, so we only need to add a tracepoint.
One difference between fair task and RT task is that there is no vruntime in RT task. To reuse the sched_stat_runtime tracepoint, '0' is passed as vruntime for RT task.
The output of this tracepoint for RT task as follows, stress-9748 [039] d.h. 113.519352: sched_stat_runtime: comm=stress pid=9748 runtime=997573 [ns] vruntime=0 [ns] stress-9748 [039] d.h. 113.520352: sched_stat_runtime: comm=stress pid=9748 runtime=997627 [ns] vruntime=0 [ns] stress-9748 [039] d.h. 113.521352: sched_stat_runtime: comm=stress pid=9748 runtime=998203 [ns] vruntime=0 [ns]
Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210905143547.4668-6-laoar.shao@gmail.com --- kernel/sched/rt.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 95a7c3a..5d25111 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -1012,6 +1012,8 @@ static void update_curr_rt(struct rq *rq) schedstat_set(curr->stats.exec_max, max(curr->stats.exec_max, delta_exec)); + trace_sched_stat_runtime(curr, delta_exec, 0); + curr->se.sum_exec_runtime += delta_exec; account_group_exec_runtime(curr, delta_exec);
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