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Message-ID: <Pine.LNX.4.64.0702011111560.8307@schroedinger.engr.sgi.com> Date: Thu, 1 Feb 2007 11:13:29 -0800 (PST) From: Christoph Lameter <clameter@....com> To: akpm@...l.org cc: Oleg Nesterov <oleg@...sign.ru>, linux-kernel@...r.kernel.org Subject: [SLAB] Shutdown cache_reaper when cpu goes down Shutdown the cache_reaper if the cpu is brought down and set the cache_reap.func to NULL. Otherwise hotplug shuts down the reaper for good. Signed-off-by: Christoph Lameter <clameter@....com> Index: linux-2.6.20-rc6-mm2/mm/slab.c =================================================================== --- linux-2.6.20-rc6-mm2.orig/mm/slab.c 2007-01-29 14:27:34.199229828 -0600 +++ linux-2.6.20-rc6-mm2/mm/slab.c 2007-01-30 13:55:57.936838878 -0600 @@ -1271,6 +1271,18 @@ static int __cpuinit cpuup_callback(stru start_cpu_timer(cpu); break; #ifdef CONFIG_HOTPLUG_CPU + case CPU_DOWN_PREPARE: + /* + * Shutdown cache reaper. Note that the cache_chain_mutex is + * held so that cache_reap() cannot modify reap_work + * concurrently. + */ + cancel_rearming_delayed_work(&per_cpu(reap_work, cpu)); + per_cpu(reap_work, cpu).work.func = NULL; + break; + case CPU_DOWN_FAILED: + start_cpu_timer(cpu); + break; case CPU_DEAD: /* * Even if all the cpus of a node are down, we don't free the - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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