From 80350a4bac992e3404067d31ff901ae9ff76aaa8 Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Fri, 17 Jul 2020 10:38:22 -0400 Subject: [PATCH] powerpc/perf: Add Power10 BHRB filter support for PERF_SAMPLE_BRANCH_IND_CALL/COND PowerISA v3.1 introduce filtering support for PERF_SAMPLE_BRANCH_IND_CALL/COND. The patch adds BHRB filter support for "ind_call" and "cond" in power10_bhrb_filter_map(). Signed-off-by: Athira Rajeev Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1594996707-3727-11-git-send-email-atrajeev@linux.vnet.ibm.com --- arch/powerpc/perf/power10-pmu.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/perf/power10-pmu.c b/arch/powerpc/perf/power10-pmu.c index 4b65e95..f7cff7f 100644 --- a/arch/powerpc/perf/power10-pmu.c +++ b/arch/powerpc/perf/power10-pmu.c @@ -83,6 +83,8 @@ /* MMCRA IFM bits - POWER10 */ #define POWER10_MMCRA_IFM1 0x0000000040000000UL +#define POWER10_MMCRA_IFM2 0x0000000080000000UL +#define POWER10_MMCRA_IFM3 0x00000000C0000000UL #define POWER10_MMCRA_BHRB_MASK 0x00000000C0000000UL /* Table of alternatives, sorted by column 0 */ @@ -233,8 +235,15 @@ static u64 power10_bhrb_filter_map(u64 branch_sample_type) if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN) return -1; - if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) - return -1; + if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) { + pmu_bhrb_filter |= POWER10_MMCRA_IFM2; + return pmu_bhrb_filter; + } + + if (branch_sample_type & PERF_SAMPLE_BRANCH_COND) { + pmu_bhrb_filter |= POWER10_MMCRA_IFM3; + return pmu_bhrb_filter; + } if (branch_sample_type & PERF_SAMPLE_BRANCH_CALL) return -1; -- 2.7.4