From: Yafang Shao <laoar.shao@gmail.com>
To: mgorman@suse.de, mingo@redhat.com, peterz@infradead.org,
juri.lelli@redhat.com, vincent.guittot@linaro.org,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, bristot@redhat.com, qianjun.kernel@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
Yafang Shao <laoar.shao@gmail.com>
Subject: [PATCH 5/6] sched, rt: support sched_stat_runtime tracepoint for RT sched class
Date: Tue, 1 Dec 2020 19:54:15 +0800 [thread overview]
Message-ID: <20201201115416.26515-6-laoar.shao@gmail.com> (raw)
In-Reply-To: <20201201115416.26515-1-laoar.shao@gmail.com>
The runtime of a RT task has already been there, so we only need to
place the sched_stat_runtime tracepoint there.
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>
---
kernel/sched/rt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 2d543a270dfe..da989653b0a2 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1011,6 +1011,8 @@ 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);
--
2.18.4
next prev parent reply other threads:[~2020-12-01 11:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 11:54 [PATCH 0/6] sched: support schedstats for RT sched class Yafang Shao
2020-12-01 11:54 ` [PATCH 1/6] sched: don't include stats.h in sched.h Yafang Shao
2020-12-01 11:54 ` [PATCH 2/6] sched, fair: use __schedstat_set() in set_next_entity() Yafang Shao
2020-12-01 12:28 ` Mel Gorman
2020-12-01 11:54 ` [PATCH 3/6] sched: make struct sched_statistics independent of fair sched class Yafang Shao
2020-12-01 12:41 ` Mel Gorman
2020-12-02 2:06 ` Yafang Shao
2020-12-01 11:54 ` [PATCH 4/6] sched: make schedstats helpers " Yafang Shao
2020-12-01 12:46 ` Mel Gorman
2020-12-02 2:04 ` Yafang Shao
2020-12-01 11:54 ` Yafang Shao [this message]
2020-12-01 11:54 ` [PATCH 6/6] sched, rt: support schedstats for RT " Yafang Shao
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