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authorJacob Shin <jacob.shin@amd.com>2013-04-21 13:06:27 -0500
committerIngo Molnar <mingo@kernel.org>2013-04-22 10:10:55 +0200
commit94f4db3590893c600506105b88dab581c7f6f5c8 (patch)
tree0208cf22b67cd57f69bf21c5dbf37b51fad35eb5 /kernel/events
parent0cf5f4323b1b51ecca3e952f95110e03ea611882 (diff)
perf/x86/amd: Fix AMD NB and L2I "uncore" support
Borislav Petkov reported a lockdep splat warning about kzalloc() done in an IPI (hardirq) handler. This is a real bug, do not call kzalloc() in a smp_call_function_single() handler because it can schedule and crash. Reported-by: Borislav Petkov <bp@suse.de> Signed-off-by: Jacob Shin <jacob.shin@amd.com> Tested-by: Borislav Petkov <bp@suse.de> Cc: Borislav Petkov <bp@alien8.de> Cc: <eranian@google.com> Cc: <a.p.zijlstra@chello.nl> Cc: <acme@ghostprotocols.net> Cc: <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20130421180627.GA21049@jshin-Toonie Signed-off-by: Ingo Molnar <mingo@kernel.org>
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