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authorDiwakar Tundlam <dtundlam@nvidia.com>2012-05-07 15:12:25 -0700
committerSimone Willett <swillett@nvidia.com>2012-07-01 09:15:12 -0700
commit0b5a8a6f30fe0eb7919294c58ddedaeab069ce2a (patch)
tree3846b0190c7345fa6067b66023661fa0f6705769 /kernel/sched_debug.c
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 <dtundlam@nvidia.com> (cherry picked from commit 3a12d7499cee352e8a46eaf700259ba3c733f0e3) Reviewed-on: http://git-master/r/111635 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Tested-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Diffstat (limited to 'kernel/sched_debug.c')
-rw-r--r--kernel/sched_debug.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index a6710a112b4f..6371af0e4612 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -264,6 +264,9 @@ static void print_cpu(struct seq_file *m, int cpu)
SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
P(nr_running);
+ SEQ_printf(m, " .%-30s: %d.%03d \n", "ave_nr_running",
+ rq->ave_nr_running / FIXED_1,
+ ((rq->ave_nr_running % FIXED_1) * 1000) / FIXED_1);
SEQ_printf(m, " .%-30s: %lu\n", "load",
rq->load.weight);
P(nr_switches);