diff mbox series

[v3,10/15] powerpc/perf: Add Power10 BHRB filter support for PERF_SAMPLE_BRANCH_IND_CALL/COND

Message ID 1594996707-3727-11-git-send-email-atrajeev@linux.vnet.ibm.com
State Changes Requested
Headers show
Series powerpc/perf: Add support for power10 PMU Hardware | expand

Commit Message

Athira Rajeev July 17, 2020, 2:38 p.m. UTC 
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 <atrajeev@linux.vnet.ibm.com>
---
 arch/powerpc/perf/power10-pmu.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/perf/power10-pmu.c b/arch/powerpc/perf/power10-pmu.c
index ba19f40..b02aabb 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;