diff mbox series

[RFC,16/18] drivers/perf: apple_m1: Map a few more PMUv3 events

Message ID 20241217212317.3709478-1-oliver.upton@linux.dev (mailing list archive)
State New
Headers show
Series KVM: arm64: Support FEAT_PMUv3 on Apple hardware | expand

Commit Message

Oliver Upton Dec. 17, 2024, 9:23 p.m. UTC 
Map some more PMUv3 events onto hardware so 'perf stat' in a KVM VM can
show some useful information (e.g. IPC, branch prediction rate).

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
 drivers/perf/apple_m1_cpu_pmu.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index b4fe247543a6..0e54d3f900a7 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -180,7 +180,10 @@  static const unsigned m1_pmu_perf_map[PERF_COUNT_HW_MAX] = {
 
 static const unsigned int m1_pmu_pmceid_map[ARMV8_PMUV3_MAX_COMMON_EVENTS] = {
 	[0 ... ARMV8_PMUV3_MAX_COMMON_EVENTS - 1]	= HW_OP_UNSUPPORTED,
+	M1_PMUV3_EVENT_MAP(INST_RETIRED,	INST_ALL),
 	M1_PMUV3_EVENT_MAP(CPU_CYCLES,		CORE_ACTIVE_CYCLE),
+	M1_PMUV3_EVENT_MAP(BR_RETIRED,		INST_BRANCH),
+	M1_PMUV3_EVENT_MAP(BR_MIS_PRED_RETIRED,	BRANCH_MISPRED_NONSPEC),
 };
 
 /* sysfs definitions */