perf/x86: Avoid exposing wrong/stale data in intel_pmu_lbr_read_32()

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commit f2200ac311 upstream.

When the perf_branch_entry::{in_tx,abort,cycles} fields were added,
intel_pmu_lbr_read_32() wasn't updated to initialize them.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Fixes: 135c5612c4 ("perf/x86/intel: Support Haswell/v4 LBR format")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Peter Zijlstra 2017-04-11 10:10:28 +02:00 • committed by Greg Kroah-Hartman

parent 0ea2dcf1f9

commit 085656dad4

1 changed files with 3 additions and 0 deletions

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arch/x86/events/intel/lbr.c

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