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Message-ID: <44029C9B.10507@bigpond.net.au>
Date: Mon, 27 Feb 2006 17:30:51 +1100
From: Peter Williams <pwil3058@bigpond.net.au>
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To: Andrew Morton <akpm@osdl.org>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Con Kolivas <kernel@kolivas.org>, Ingo Molnar <mingo@elte.hu>,
       npiggin@suse.de, "Siddha, Suresh B" <suresh.b.siddha@intel.com>,
       "Chen, Kenneth W" <kenneth.w.chen@intel.com>,
       John Hawkes <hawkes@sgi.com>
Subject: [PATCH] sched: smpnice - fix average load per run queue calculations
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The logical value to use for the average load per task on a run queue 
without any runnable tasks is the "default" load for a nice==0 task. 
Failure to do this may lead to anomalies in try_to_wake_up(), etc.

Signed-off-by: Peter Williams <pwil3058@bigpond.com.au>

Peter
-- 
Peter Williams                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce

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Index: MM-2.6.X/kernel/sched.c
===================================================================
--- MM-2.6.X.orig/kernel/sched.c	2006-02-27 17:18:12.000000000 +1100
+++ MM-2.6.X/kernel/sched.c	2006-02-27 17:19:52.000000000 +1100
@@ -1058,7 +1058,7 @@ static inline unsigned long cpu_avg_load
 	runqueue_t *rq = cpu_rq(cpu);
 	unsigned long n = rq->nr_running;
 
-	return n ?  rq->raw_weighted_load / n : rq->raw_weighted_load;
+	return n ?  rq->raw_weighted_load / n : SCHED_LOAD_SCALE;
 }
 
 /*

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