diff options
| author | Paul Turner <pjt@google.com> | 2012-08-23 07:14:25 -0700 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2012-10-03 14:21:45 +0530 |
| commit | ec3ca400fdebfd8cf5f361693519a8be1586637f (patch) | |
| tree | 143a04602649b4a9f6c583f9bb950968c240af35 /include | |
| parent | 29fb7f2279004bf8bfe5650f136fbbeb95c48537 (diff) | |
sched: aggregate load contributed by task entities on parenting cfs_rq
For a given task t, we can compute its contribution to load as:
task_load(t) = runnable_avg(t) * weight(t)
On a parenting cfs_rq we can then aggregate
runnable_load(cfs_rq) = \Sum task_load(t), for all runnable children t
Maintain this bottom up, with task entities adding their contributed load to
the parenting cfs_rq sum. When a task entity's load changes we add the same
delta to the maintained sum.
Signed-off-by: Paul Turner <pjt@google.com>
Reviewed-by: Ben Segall <bsegall@google.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 73567f45edc..ebf78f8b1e1 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1147,6 +1147,7 @@ struct sched_avg { */ u32 runnable_avg_sum, runnable_avg_period; u64 last_runnable_update; + unsigned long load_avg_contrib; }; #ifdef CONFIG_SCHEDSTATS |