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

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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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Andreas Herrmann 2008-08-06 10:29:37 +02:00 • committed by Ingo Molnar

parent 49800efcb1

commit b55793f752

1 changed files with 13 additions and 10 deletions

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arch/x86/kernel/cpu/common_64.c

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