diff options
| author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:08 +0100 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2012-10-03 16:28:51 +0530 |
| commit | 6d9d0f51505ba4e65bfb13cebb732ab18a41f922 (patch) | |
| tree | 319ac0114b48275b62471eb0bd1d53f2d6498ac7 | |
| parent | 7bf24537e753209194c43f41fb3adff82e7b8bc3 (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 29bbe069d67..971baab9a1b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1150,6 +1150,7 @@ 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 96625294d5c..09682fae0a7 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1192,6 +1192,9 @@ 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 */ |