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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-10-18 10:36:11 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-10-18 10:36:11 +1100 |
| commit | 72523d8082df3d89bffe30cbc1356dbb45ab51ae (patch) | |
| tree | 54e18a4ca7d7a279a260902a93f190078225097f | |
| parent | 18673533256a2953ccefded52df2679de8640685 (diff) | |
| download | mipi-72523d8082df3d89bffe30cbc1356dbb45ab51ae.tar.gz | |
Revert "powerpc/perf: Use pmc_overflow() to detect rolled back events"
This reverts commit 813312110bede27bffd082c25cd31730bd567beb.
This revert was requested by the author of the patch as it seems
to cause system hangs with some low frequency events
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 0db88f501f91c..aa2465e21f1a8 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1463,7 +1463,7 @@ static void perf_event_interrupt(struct pt_regs *regs) if (!event->hw.idx || is_limited_pmc(event->hw.idx)) continue; val = read_pmc(event->hw.idx); - if (pmc_overflow(val)) { + if ((int)val < 0) { /* event has overflowed */ found = 1; record_and_restart(event, val, regs); |