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Date: Wed, 30 May 2012 13:48:32 +0400 From: Glauber Costa <glommer@...allels.com> To: <linux-kernel@...r.kernel.org> Cc: <cgroups@...r.kernel.org>, <devel@...nvz.org>, Paul Turner <pjt@...gle.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Tejun Heo <tj@...nel.org>, "Eric W. Biederman" <ebiederm@...ssion.com>, handai.szj@...il.com, Andrew.Phillips@...x.com, Serge Hallyn <serge.hallyn@...onical.com>, Glauber Costa <glommer@...allels.com> Subject: [PATCH v3 1/6] measure exec_clock for rt sched entities For simetry with the cfq tasks, measure exec_clock for the rt sched entities (rt_se). This can be used in a number of fashions. For instance, to compute total cpu usage in a cgroup that is generated by rt tasks. Signed-off-by: Glauber Costa <glommer@...allels.com> CC: Peter Zijlstra <a.p.zijlstra@...llo.nl> CC: Paul Turner <pjt@...gle.com> --- kernel/sched/rt.c | 5 +++++ kernel/sched/sched.h | 1 + 2 files changed, 6 insertions(+) diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index c5565c3..30ee4e2 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -919,6 +919,11 @@ static void update_curr_rt(struct rq *rq) sched_rt_avg_update(rq, delta_exec); + for_each_sched_rt_entity(rt_se) { + rt_rq = rt_rq_of_se(rt_se); + schedstat_add(rt_rq, exec_clock, delta_exec); + } + if (!rt_bandwidth_enabled()) return; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index ba9dccf..cd2f1e1 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -295,6 +295,7 @@ struct rt_rq { struct plist_head pushable_tasks; #endif int rt_throttled; + u64 exec_clock; u64 rt_time; u64 rt_runtime; /* Nests inside the rq lock: */ -- 1.7.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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