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Message-Id: <20170914070357.29288-1-linxiulei@gmail.com> Date: Thu, 14 Sep 2017 15:03:57 +0800 From: linxiulei@...il.com To: yang_oliver@...mail.com, peterz@...radead.org, mingo@...hat.com, acme@...nel.org, alexander.shishkin@...ux.intel.com, linux-kernel@...r.kernel.org, tglx@...utronix.de, eranian@...il.com, torvalds@...ux-foundation.org, jolsa@...hat.com Cc: "leilei.lin" <leilei.lin@...baba-inc.com> Subject: [PATCH] perf/core: Update cgroup time with descendants From: "leilei.lin" <leilei.lin@...baba-inc.com> This fix updating cgroup time when event is being scheduled in by cgroup descendants Signed-off-by: leilei.lin <leilei.lin@...baba-inc.com> --- kernel/events/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 3e691b7..6f6bd1e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -662,7 +662,9 @@ static inline void update_cgrp_time_from_event(struct perf_event *event) /* * Do not update time when cgroup is not active */ - if (cgrp == event->cgrp) + if (cgrp == event->cgrp || + cgroup_is_descendant(cgrp->css.cgroup, + event->cgrp->css.cgroup)) __update_cgrp_time(event->cgrp); } -- 2.8.4.31.g9ed660f
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