diff options
| -rw-r--r-- | arch/powerpc/perf/power8-pmu.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index 1d7c4428a55e..67aab104b9fe 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -270,18 +270,20 @@ static int power8_get_constraint(u64 event, unsigned long *maskp, unsigned long cache = (event >> EVENT_CACHE_SEL_SHIFT) & EVENT_CACHE_SEL_MASK; ebb = (event >> EVENT_EBB_SHIFT) & EVENT_EBB_MASK; - /* Clear the EBB bit in the event, so event checks work below */ - event &= ~(EVENT_EBB_MASK << EVENT_EBB_SHIFT); - if (pmc) { + u64 base_event; + if (pmc > 6) return -1; - mask |= CNST_PMC_MASK(pmc); - value |= CNST_PMC_VAL(pmc); + /* Ignore Linux defined bits when checking event below */ + base_event = event & ~(EVENT_EBB_MASK << EVENT_EBB_SHIFT); - if (pmc >= 5 && event != 0x500fa && event != 0x600f4) + if (pmc >= 5 && base_event != 0x500fa && base_event != 0x600f4) return -1; + + mask |= CNST_PMC_MASK(pmc); + value |= CNST_PMC_VAL(pmc); } if (pmc <= 4) { |