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generic-ipi: fix hotplug_cfd()

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Use CONFIG_HOTPLUG_CPU, not CONFIG_CPU_HOTPLUG

When hot-unpluging a cpu, it will leak memory allocated at cpu hotplug,
but only if CPUMASK_OFFSTACK=y, which is default to n.

The bug was introduced by 8969a5ede0
("generic-ipi: remove kmalloc()").

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Xiao Guangrong 2009-08-06 15:07:29 -07:00 committed by Linus Torvalds
parent 2020002a87
commit 69dd647f96
1 changed files with 1 additions and 1 deletions
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2
kernel/smp.c
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@ -57,7 +57,7 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action, void *hcpu)
return NOTIFY_BAD; return NOTIFY_BAD;
break; break;
#ifdef CONFIG_CPU_HOTPLUG #ifdef CONFIG_HOTPLUG_CPU
case CPU_UP_CANCELED: case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN: case CPU_UP_CANCELED_FROZEN: