linux-kernel - [RFC PATCH v1 35/70] mm, slab:

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Message-Id: <1406080786-3938-36-git-send-email-gong.chen@linux.intel.com>
Date:	Tue, 22 Jul 2014 21:59:11 -0400
From:	"Chen, Gong" <gong.chen@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, tglx@...utronix.de, paulus@...ba.org,
	benh@...nel.crashing.org, tony.luck@...el.com, hpa@...or.com,
	jkosina@...e.cz, rafael.j.wysocki@...el.com, bp@...en8.de,
	linux@....linux.org.uk, ralf@...ux-mips.org,
	schwidefsky@...ibm.com, davem@...emloft.net,
	viro@...iv.linux.org.uk, fweisbec@...il.com, cl@...ux.com,
	akpm@...ux-foundation.org, axboe@...nel.dk,
	JBottomley@...allels.com, neilb@...e.de,
	christoffer.dall@...aro.org, rostedt@...dmis.org, rric@...nel.org,
	gregkh@...uxfoundation.org, mhocko@...e.cz, david@...morbit.com,
	"Chen, Gong" <gong.chen@...ux.intel.com>
Subject: [RFC PATCH v1 35/70] mm, slab: _FROZEN Cleanup

Remove XXX_FROZEN state from mm/slab.

Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
---
 mm/slab.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index 3070b92..5490528 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1325,20 +1325,17 @@ static int cpuup_callback(struct notifier_block *nfb,
 	long cpu = (long)hcpu;
 	int err = 0;
 
-	switch (action) {
+	switch (action & ~CPU_TASKS_FROZEN) {
 	case CPU_UP_PREPARE:
-	case CPU_UP_PREPARE_FROZEN:
 		mutex_lock(&slab_mutex);
 		err = cpuup_prepare(cpu);
 		mutex_unlock(&slab_mutex);
 		break;
 	case CPU_ONLINE:
-	case CPU_ONLINE_FROZEN:
 		start_cpu_timer(cpu);
 		break;
 #ifdef CONFIG_HOTPLUG_CPU
   	case CPU_DOWN_PREPARE:
-  	case CPU_DOWN_PREPARE_FROZEN:
 		/*
 		 * Shutdown cache reaper. Note that the slab_mutex is
 		 * held so that if cache_reap() is invoked it cannot do
@@ -1350,11 +1347,9 @@ static int cpuup_callback(struct notifier_block *nfb,
 		per_cpu(slab_reap_work, cpu).work.func = NULL;
   		break;
   	case CPU_DOWN_FAILED:
-  	case CPU_DOWN_FAILED_FROZEN:
 		start_cpu_timer(cpu);
   		break;
 	case CPU_DEAD:
-	case CPU_DEAD_FROZEN:
 		/*
 		 * Even if all the cpus of a node are down, we don't free the
 		 * kmem_cache_node of any cache. This to avoid a race between
@@ -1366,7 +1361,6 @@ static int cpuup_callback(struct notifier_block *nfb,
 		/* fall through */
 #endif
 	case CPU_UP_CANCELED:
-	case CPU_UP_CANCELED_FROZEN:
 		mutex_lock(&slab_mutex);
 		cpuup_canceled(cpu);
 		mutex_unlock(&slab_mutex);
-- 
2.0.0.rc2

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