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Date: Tue, 13 Jul 2004 03:14:46 -0700
From: William Lee Irwin III <wli@holomorphy.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Con Kolivas <kernel@kolivas.org>, Andrew Morton <akpm@osdl.org>,
       ck@vds.kolivas.org, devenyga@mcmaster.ca, linux-kernel@vger.kernel.org
Subject: Re: Preempt Threshold Measurements
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On Tue, Jul 13, 2004 at 03:48:45PM +1000, Nick Piggin wrote:
> cond_resched_lock just below this needs something similar.

Maybe it does.

Index: mm7-2.6.7/include/linux/sched.h
===================================================================
--- mm7-2.6.7.orig/include/linux/sched.h	2004-07-13 03:06:12.759495000 -0700
+++ mm7-2.6.7/include/linux/sched.h	2004-07-13 03:14:00.122445032 -0700
@@ -1053,7 +1053,8 @@
 		preempt_enable_no_resched();
 		__cond_resched();
 		spin_lock(lock);
-	}
+	} else
+		touch_preempt_timing();
 }
 
 /* Reevaluate whether the task has signals pending delivery.