diff options
author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:08 +0100 |
---|---|---|
committer | Jon Medhurst <tixy@linaro.org> | 2013-07-17 11:12:24 +0100 |
commit | be6ef1d56e70bfdfd79174d7d23a4b12d5b911ee (patch) | |
tree | 4773d3ecf6652d40eddda6f151cba25b783d6d47 | |
parent | 0841c6ae0b53d43e4634cf4a1f88407b93c15399 (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 fe752ca19a8..207054a9867 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -931,6 +931,7 @@ 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 98979ddf540..e6db20a013b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1428,6 +1428,9 @@ 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 */ |