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(parent: 49800ef) | patch
x86: cpu_init(): fix memory leak when using CPU hotplug
authorAndreas Herrmann <andreas.herrmann3@amd.com>
Wed, 6 Aug 2008 08:29:37 +0000 (10:29 +0200)
committerIngo Molnar <mingo@elte.hu>
Mon, 11 Aug 2008 19:39:12 +0000 (21:39 +0200)
commitb55793f7528ce1b73c25b3ac8a86a6cda2a0f9a4
treeb1a689431946093f92a15bd8fc4f09c4d7bdd01ctree | snapshot
parent49800efcb17afdf973f33e8aa8807b7f83993cc6commit | diff
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>
arch/x86/kernel/cpu/common_64.c diff | blob | history
Domain: System / Kernel;