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| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2015-02-27 16:54:05 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-27 09:35:58 +0100 |
| commit | 21f4486630b0bd1b6dbcc04f61836987fa54278f (patch) | |
| tree | 6abbdb654567ac6530091e033d62a79f6cdf1839 /kernel/sched/fair.c | |
| parent | 36ee28e45df50c2c8624b978335516e42d84ae1f (diff) | |
| download | linux-21f4486630b0bd1b6dbcc04f61836987fa54278f.tar.gz linux-21f4486630b0bd1b6dbcc04f61836987fa54278f.tar.bz2 linux-21f4486630b0bd1b6dbcc04f61836987fa54278f.zip | |
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@arm.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>
Cc: Ben Segall <bsegall@google.com>
Cc: Ben Segall <bsegall@google.com>
Cc: Morten.Rasmussen@arm.com
Cc: Paul Turner <pjt@google.com>
Cc: dietmar.eggemann@arm.com
Cc: efault@gmx.de
Cc: kamalesh@linux.vnet.ibm.com
Cc: linaro-kernel@lists.linaro.org
Cc: nicolas.pitre@linaro.org
Cc: preeti@linux.vnet.ibm.com
Cc: riel@redhat.com
Link: http://lkml.kernel.org/r/1425052454-25797-3-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 414408dd6e0c..d94a86511ae9 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; } |