Re: [PATCH 1/2] sched: introduce avg_wakeup

[Peter Zijlstra <peterz@infradead.org>]

On Wed, 2009-01-14 at 12:59 +0100, Peter Zijlstra wrote:
> +       /*
> +        * Only attribute actual wakeups done by this task.
> +        */
> +       if (!in_interrupt()) {
> +               struct sched_entity *se = &current->se;
> +               u64 sample = se->sum_exec_runtime;
> +
> +               if (se->last_wakeup)
> +                       sample -= se->last_wakeup;
> +               else
> +                       sample -= se->start_runtime;
> +               update_avg(&se->avg_wakeup, sample);
> +
> +               current->se.last_wakeup = current->se.sum_exec_runtime;
> +       }

time for lunch apparently...

Index: linux-2.6/kernel/sched.c
===================================================================
--- linux-2.6.orig/kernel/sched.c
+++ linux-2.6/kernel/sched.c
@@ -2424,7 +2424,7 @@ out_activate:
 			sample -= se->start_runtime;
 		update_avg(&se->avg_wakeup, sample);
 
-		current->se.last_wakeup = current->se.sum_exec_runtime;
+		se.last_wakeup = se.sum_exec_runtime;
 	}
 
 out_running: