diff options
| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2014-09-05 11:30:29 +0100 |
|---|---|---|
| committer | Vincent Guittot <vincent.guittot@linaro.org> | 2014-11-03 17:05:25 +0100 |
| commit | f9bf7c8c748014736ea037c2a96252f9e073218e (patch) | |
| tree | 21e840331ec3908ebfd00c84f81589d42ccb57eb /kernel/sched/fair.c | |
| parent | afd41bd21c021ffb1831509340f08f0c7b4fd663 (diff) | |
sched: Track group sched_entity usage contributions
Adds 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.
cc: Paul Turner <pjt@google.com>
cc: Ben Segall <bsegall@google.com>
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.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 3a91ae68db4a..a171e1b49182 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2529,6 +2529,9 @@ 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; } |