On Mon, Dec 17, 2018 at 8:37 AM Peter Zijlstra [off-list ref] wrote:

On Fri, Dec 14, 2018 at 09:15:08AM -0800, Suren Baghdasaryan wrote:

quoted

@@ -358,28 +526,23 @@ static void psi_update_work(struct work_struct *work)
 {
      struct delayed_work *dwork;
      struct psi_group *group;
+     u64 next_update;

      dwork = to_delayed_work(work);
      group = container_of(dwork, struct psi_group, clock_work);

      /*
+      * Periodically fold the per-cpu times and feed samples
+      * into the running averages.
       */

+     psi_update(group);

+     /* Calculate closest update time */
+     next_update = min(group->polling_next_update,
+                             group->avg_next_update);
+     schedule_delayed_work(dwork, min(PSI_FREQ,
+             nsecs_to_jiffies(next_update - sched_clock()) + 1));

See, so I don't at _all_ like how there is no idle option..

Copy that. Will see what we can do to bring it back.
Thanks!

quoted

 }

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