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authorArun Sharma2012-04-21 00:41:34 +0200
committerIngo Molnar2012-06-06 17:08:00 +0200
commit0b0d9cf6ec7bab91977da2d71c09157f110f7c2e (patch)
treec70689cc98aab1500585886bf71a993b21cc6046 /arch/x86
parentperf/x86: Allow multiple stacks (diff)
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perf: Limit callchains to 127
Stack depth of 255 seems excessive, given that copy_from_user_nmi() could be slow. Signed-off-by: Arun Sharma <asharma@fb.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1334961696-19580-3-git-send-email-asharma@fb.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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