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Message-Id: <1231934594.7141.30.camel@twins>
Date: Wed, 14 Jan 2009 13:03:14 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Ingo Molnar <mingo@...e.hu>
Cc: Mike Galbraith <efault@....de>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] sched: introduce avg_wakeup
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 = ¤t->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:
--
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