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authorTejun Heo <tj@kernel.org>2009-06-22 11:56:24 +0900
committerTejun Heo <tj@kernel.org>2009-06-22 11:56:24 +0900
commit0017c869ddcb73069905d09f9e98e68627466237 (patch)
tree380248938561c53ff174ffba72f22cbc3e8a5438 /init
parentfa8a7094ba1679b4b9b443e0ac9f5e046c79ee8d (diff)
x86: ensure percpu lpage doesn't consume too much vmalloc space
On extreme configuration (e.g. 32bit 32-way NUMA machine), lpage percpu first chunk allocator can consume too much of vmalloc space. Make it fall back to 4k allocator if the consumption goes over 20%. [ Impact: add sanity check for lpage percpu first chunk allocator ] Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Jan Beulich <JBeulich@novell.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu>
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