Commit-ID: 21f4486630b0bd1b6dbcc04f61836987fa54278f Gitweb: http://git.kernel.org/tip/21f4486630b0bd1b6dbcc04f61836987fa54278f Author: Morten Rasmussen <morten.rasmussen@xxxxxxx> AuthorDate: Fri, 27 Feb 2015 16:54:05 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Fri, 27 Mar 2015 09:35:58 +0100 sched: Track group sched_entity usage contributions Add usage contribution tracking for group entities. Unlike se->avg.load_avg_contrib, se->avg.utilization_avg_contrib for group entities is the sum of se->avg.utilization_avg_contrib for all entities on the group runqueue. It is _not_ influenced in any way by the task group h_load. Hence it is representing the actual cpu usage of the group, not its intended load contribution which may differ significantly from the utilization on lightly utilized systems. Signed-off-by: Morten Rasmussen <morten.rasmussen@xxxxxxx> Signed-off-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Cc: Paul Turner <pjt@xxxxxxxxxx> Cc: Ben Segall <bsegall@xxxxxxxxxx> Cc: Ben Segall <bsegall@xxxxxxxxxx> Cc: Morten.Rasmussen@xxxxxxx Cc: Paul Turner <pjt@xxxxxxxxxx> Cc: dietmar.eggemann@xxxxxxx Cc: efault@xxxxxx Cc: kamalesh@xxxxxxxxxxxxxxxxxx Cc: linaro-kernel@xxxxxxxxxxxxxxxx Cc: nicolas.pitre@xxxxxxxxxx Cc: preeti@xxxxxxxxxxxxxxxxxx Cc: riel@xxxxxxxxxx Link: http://lkml.kernel.org/r/1425052454-25797-3-git-send-email-vincent.guittot@xxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/sched/debug.c | 2 ++ kernel/sched/fair.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 578ff83..a245c1f 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -94,8 +94,10 @@ static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group P(se->load.weight); #ifdef CONFIG_SMP P(se->avg.runnable_avg_sum); + P(se->avg.running_avg_sum); P(se->avg.avg_period); P(se->avg.load_avg_contrib); + P(se->avg.utilization_avg_contrib); P(se->avg.decay_count); #endif #undef PN diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 414408dd..d94a865 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2747,6 +2747,9 @@ static long __update_entity_utilization_avg_contrib(struct sched_entity *se) if (entity_is_task(se)) __update_task_entity_utilization(se); + else + se->avg.utilization_avg_contrib = + group_cfs_rq(se)->utilization_load_avg; return se->avg.utilization_avg_contrib - old_contrib; } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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