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Re: [PATCH] SLUB use cmpxchg_local

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From: Christoph Lameter
Subject: Re: [PATCH] SLUB use cmpxchg_local
Date: Tuesday, August 21, 2007 - 4:14 pm

On Tue, 21 Aug 2007, Mathieu Desnoyers wrote:


But this means a preempt disable is required. RT users do not want that.
Without preemption the processor can be moved after c has been determined.
That is why the smp_rmb() is there.
-
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Messages in current thread:
[patch 01/23] Fall back on interrupt disable in cmpxchg8b ..., Mathieu Desnoyers, (Mon Aug 20, 1:15 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Christoph Lameter, (Mon Aug 20, 1:32 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Mathieu Desnoyers, (Mon Aug 20, 1:41 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Christoph Lameter, (Mon Aug 20, 1:46 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Mathieu Desnoyers, (Mon Aug 20, 2:29 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Christoph Lameter, (Mon Aug 20, 2:49 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Mathieu Desnoyers, (Mon Aug 20, 2:54 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Christoph Lameter, (Mon Aug 20, 3:07 pm)
Re: [patch 01/23] Fall back on interrupt disable in cmpxch ..., Mathieu Desnoyers, (Mon Aug 20, 3:29 pm)
[PATCH] SLUB Use cmpxchg() everywhere, Mathieu Desnoyers, (Tue Aug 21, 10:38 am)
[PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 10:38 am)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 10:44 am)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 1:41 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 2:08 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 2:10 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 2:36 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:12 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:14 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:17 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:21 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:23 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:35 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:38 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:39 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:41 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:47 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 4:50 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 4:51 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 5:03 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 5:11 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 5:26 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 5:34 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 5:38 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 21, 6:06 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 6:12 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 21, 6:18 pm)
Re: [PATCH] SLUB use cmpxchg_local, Andi Kleen, (Tue Aug 21, 6:28 pm)
Re: [PATCH] SLUB use cmpxchg_local, Andi Kleen, (Wed Aug 22, 2:39 am)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Wed Aug 22, 6:45 am)
Re: [PATCH] SLUB use cmpxchg_local, Andi Kleen, (Wed Aug 22, 6:46 am)
[PATCH] define have_arch_cmpxchg(), Mathieu Desnoyers, (Wed Aug 22, 8:00 am)
[PATCH] SLUB: use have_arch_cmpxchg(), Mathieu Desnoyers, (Wed Aug 22, 8:02 am)
Re: [PATCH] SLUB: use have_arch_cmpxchg(), Pekka Enberg, (Wed Aug 22, 9:24 am)
Re: [PATCH] define have_arch_cmpxchg(), Christoph Lameter, (Wed Aug 22, 11:50 am)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Wed Aug 22, 11:54 am)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Wed Aug 22, 12:25 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Wed Aug 22, 1:09 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Wed Aug 22, 1:19 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Wed Aug 22, 1:29 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Wed Aug 22, 1:33 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Wed Aug 22, 1:38 pm)
Re: [PATCH] SLUB use cmpxchg_local, Peter Zijlstra, (Sun Aug 26, 11:52 pm)
Re: [PATCH] SLUB: use have_arch_cmpxchg(), Mathieu Desnoyers, (Mon Aug 27, 7:56 am)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 12:39 pm)
Re: [PATCH] SLUB: use have_arch_cmpxchg(), Christoph Lameter, (Mon Aug 27, 12:43 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Mon Aug 27, 1:22 pm)
Re: [PATCH] SLUB: use have_arch_cmpxchg(), Mathieu Desnoyers, (Mon Aug 27, 1:25 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 1:26 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Mon Aug 27, 1:39 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 2:04 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Mon Aug 27, 2:10 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 2:23 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Mon Aug 27, 2:38 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 3:12 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 3:15 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Mon Aug 27, 3:27 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 3:29 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Mon Aug 27, 6:26 pm)
Re: [PATCH] SLUB use cmpxchg_local, Peter Zijlstra, (Tue Aug 28, 12:12 am)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Aug 28, 5:07 am)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 28, 12:36 pm)
Re: [PATCH] SLUB use cmpxchg_local, Christoph Lameter, (Tue Aug 28, 12:42 pm)
Re: [PATCH] SLUB use cmpxchg_local, Peter Zijlstra, (Tue Aug 28, 12:46 pm)
Re: [PATCH] SLUB use cmpxchg_local, Mathieu Desnoyers, (Tue Sep 4, 1:02 pm)
[PATCH] local_t protection (critical section), Mathieu Desnoyers, (Tue Sep 4, 1:03 pm)
[PATCH] slub - Use local_t protection, Mathieu Desnoyers, (Tue Sep 4, 1:04 pm)
Re: [PATCH] slub - Use local_t protection, Christoph Lameter, (Tue Sep 4, 1:45 pm)
Re: [PATCH] slub - Use local_t protection, Mathieu Desnoyers, (Wed Sep 5, 6:03 am)
[PATCH] local_t protection (critical section), Mathieu Desnoyers, (Wed Sep 5, 6:04 am)
Re: [PATCH] slub - Use local_t protection, Mathieu Desnoyers, (Wed Sep 5, 6:06 am)
Re: [PATCH] slub - Use local_t protection, Christoph Lameter, (Wed Sep 12, 3:28 pm)
Re: [PATCH] local_t protection (critical section), Christoph Lameter, (Wed Sep 12, 3:33 pm)
Re: [PATCH] local_t protection (critical section), Mathieu Desnoyers, (Wed Sep 12, 4:00 pm)