Messages in this thread Patch in this message | | | From | Anshuman Khandual <> | Subject | [V6 06/11] powerpc, perf: Re-arrange PMU based branch filter processing in POWER8 | Date | Wed, 21 May 2014 15:29:51 +0530 |
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This patch does some code re-arrangements to make it clear that it ignores any separate privilege level branch filter request and does not support any combinations of HW PMU branch filters.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> --- arch/powerpc/perf/power8-pmu.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index fe2763b..13f47f5 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -635,8 +635,6 @@ static int power8_generic_events[] = { static u64 power8_bhrb_filter_map(u64 branch_sample_type) { - u64 pmu_bhrb_filter = 0; - /* BHRB and regular PMU events share the same privilege state * filter configuration. BHRB is always recorded along with a * regular PMU event. As the privilege state filter is handled @@ -644,20 +642,15 @@ static u64 power8_bhrb_filter_map(u64 branch_sample_type) * PMU event, we ignore any separate BHRB specific request. */ - /* No branch filter requested */ - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY) - return pmu_bhrb_filter; - - /* Invalid branch filter options - HW does not support */ - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN) - return -1; + /* Ignore user, kernel, hv bits */ + branch_sample_type &= ~PERF_SAMPLE_BRANCH_PLM_ALL; - if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) - return -1; + /* No branch filter requested */ + if (branch_sample_type == PERF_SAMPLE_BRANCH_ANY) + return 0; - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_CALL) { - pmu_bhrb_filter |= POWER8_MMCRA_IFM1; - return pmu_bhrb_filter; + if (branch_sample_type == PERF_SAMPLE_BRANCH_ANY_CALL) { + return POWER8_MMCRA_IFM1; } /* Every thing else is unsupported */ -- 1.7.11.7
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