path: root/include
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authorDiwakar Tundlam <>2012-05-07 15:12:25 -0700
committerSimone Willett <>2012-07-01 09:15:12 -0700
commit0b5a8a6f30fe0eb7919294c58ddedaeab069ce2a (patch)
tree3846b0190c7345fa6067b66023661fa0f6705769 /include
parent42b6ed043eb443b5a8e1de576aac124c3bcba4cb (diff)
scheduler: compute time-average nr_running per run-queue
Compute the time-average number of running tasks per run-queue for a trailing window of a fixed time period. The detla add/sub to the average value is weighted by the amount of time per nr_running value relative to the total measurement period. Change-Id: I076e24ff4ed65bed3b8dd8d2b279a503318071ff Signed-off-by: Diwakar Tundlam <> (cherry picked from commit 3a12d7499cee352e8a46eaf700259ba3c733f0e3) Reviewed-on: http://git-master/r/111635 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Sai Gurrappadi <> Tested-by: Sai Gurrappadi <> Reviewed-by: Peter Boonstoppel <> Reviewed-by: Yu-Huan Hsu <>
Diffstat (limited to 'include')
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5bb4dd2e4c59..c9e03a9aa956 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -139,6 +139,7 @@ extern int nr_processes(void);
extern unsigned long nr_running(void);
extern unsigned long nr_uninterruptible(void);
extern unsigned long nr_iowait(void);
+extern unsigned long avg_nr_running(void);
extern unsigned long nr_iowait_cpu(int cpu);
extern unsigned long this_cpu_load(void);