perf/x86-ibs: Take instruction pointer from ibs sample

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Each IBS sample contains a linear address of the instruction that
caused the sample to trigger. This address is more precise than the
rip that was taken from the interrupt handler's stack. Update the rip
with that address. We use this in the next patch to implement
precise-event sampling on AMD systems using IBS.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333390758-10893-6-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Robert Richter 2012-04-02 20:19:11 +02:00 • committed by Ingo Molnar

parent 6accb9cf76

commit d47e8238cd

2 changed files with 35 additions and 19 deletions

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6

arch/x86/include/asm/perf_event.h

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48

arch/x86/kernel/cpu/perf_event_amd_ibs.c

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