diff options
| author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:08 +0100 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2013-03-12 14:54:28 +0530 |
| commit | 115472b3c6cf5240a0e54ecfc3612db0133f1e5c (patch) | |
| tree | 743a90c68c38990c13080f6a03f648eb63c4ad49 | |
| parent | c1057acd610e8af30ec9fe78679bcd2800a8f248 (diff) | |
sched: entity load-tracking load_avg_ratio
This patch adds load_avg_ratio to each task. The load_avg_ratio is a
variant of load_avg_contrib which is not scaled by the task priority. It
is calculated like this:
runnable_avg_sum * NICE_0_LOAD / (runnable_avg_period + 1).
Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
| -rw-r--r-- | include/linux/sched.h | 1 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 1e0939c9901..38970832a51 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1097,6 +1097,7 @@ struct sched_avg { u64 last_runnable_update; s64 decay_count; unsigned long load_avg_contrib; + unsigned long load_avg_ratio; u32 usage_avg_sum; }; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index f3b33d88633..31a56dcb444 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1427,6 +1427,9 @@ static inline void __update_task_entity_contrib(struct sched_entity *se) contrib = se->avg.runnable_avg_sum * scale_load_down(se->load.weight); contrib /= (se->avg.runnable_avg_period + 1); se->avg.load_avg_contrib = scale_load(contrib); + contrib = se->avg.runnable_avg_sum * scale_load_down(NICE_0_LOAD); + contrib /= (se->avg.runnable_avg_period + 1); + se->avg.load_avg_ratio = scale_load(contrib); } /* Compute the current contribution to load_avg by se, return any delta */ |