From: Andreas Herrmann <andreas.herrmann3@amd.com>
Date: Wed, 6 Aug 2008 08:29:37 +0000 (+0200)
Subject: x86: cpu_init(): fix memory leak when using CPU hotplug
X-Git-Tag: v2.6.27-rc6~23^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23952a96ae738277f3139b63d622e22984589031;p=pandora-kernel.git

x86: cpu_init(): fix memory leak when using CPU hotplug

Exception stacks are allocated each time a CPU is set online.
But the allocated space is never freed. Thus with one CPU hotplug
offline/online cycle there is a memory leak of 24K (6 pages) for
a CPU.

Fix is to allocate exception stacks only once -- when the CPU is
set online for the first time.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: akpm@linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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