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Re: [kpreempt-tech] Re: Oops in kernel 2.4.19-pre10-ac2-preempt
- To: Robert Love <rml@tech9.net>
- Subject: Re: [kpreempt-tech] Re: Oops in kernel 2.4.19-pre10-ac2-preempt
- From: William Lee Irwin III <wli@holomorphy.com>
- Date: Thu, 20 Jun 2002 10:22:20 -0700
- Cc: Mark_H_Johnson@Raytheon.com, kpreempt-tech@lists.sourceforge.net,linux-mm@kvack.org, Robert_Horton@Raytheon.com,James_P_Cassidy@Raytheon.com, Stanley_R_Allen@Raytheon.com
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- Mail-Followup-To: William Lee Irwin III <wli@holomorphy.com>,Robert Love <rml@tech9.net>, Mark_H_Johnson@Raytheon.com,kpreempt-tech@lists.sourceforge.net, linux-mm@kvack.org,Robert_Horton@Raytheon.com, James_P_Cassidy@Raytheon.com,Stanley_R_Allen@Raytheon.com
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- Sender: Rik van Riel <riel@nl.linux.org>
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On Thu, 2002-06-20 at 10:16, William Lee Irwin III wrote:
>> The preemption cleanup cannot be done on 2.4 as there are no preemption
>> disabling primitives available.
On Thu, Jun 20, 2002 at 10:19:24AM -0700, Robert Love wrote:
> wli, if you send me a patch (or just tell me explicitly where to enable
> and disable preemption) I will merge it into the 2.4-ac preempt
> patches...
That'd be great, the two places are pte_chain_lock() and pte_chain_unlock().
They're basically a spin_lock_bit() and spin_unlock_bit(), so they need
the same kind of disable preempt before the spinloop and re-enable it after
dropping the lock treatment as spinlocks.
Thanks,
Bill
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