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Date: Mon, 16 Aug 2004 05:36:23 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Lee Revell <rlrevell@joe-job.com>
Cc: Florian Schmidt <mista.tapas@gmx.net>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
Subject: Re: [patch] voluntary-preempt-2.6.8.1-P0
Message-ID: <20040816033623.GA12157@elte.hu>
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doh - i think i found a brown-paperbag bug.

could you change this code in kernel/sched.c:

 int __sched voluntary_resched(void)
 {
 #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
         __might_sleep(__FILE__, __LINE__);
 #endif
         if (kernel_preemption || !voluntary_preemption)
                 return 0;

to:

 int __sched voluntary_resched(void)
 {
 #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
         __might_sleep(__FILE__, __LINE__);
 #endif
         if (!voluntary_preemption)
                 return 0;

Does the mlockall xrun still occur?

	Ingo