diff options
| -rw-r--r-- | drivers/perf/apple_m1_cpu_pmu.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c index d6d4ff6da862..6be703619a97 100644 --- a/drivers/perf/apple_m1_cpu_pmu.c +++ b/drivers/perf/apple_m1_cpu_pmu.c @@ -12,6 +12,7 @@ #include <linux/of.h> #include <linux/perf/arm_pmu.h> +#include <linux/perf/arm_pmuv3.h> #include <linux/platform_device.h> #include <asm/apple_m1_pmu.h> @@ -174,6 +175,17 @@ static const unsigned m1_pmu_perf_map[PERF_COUNT_HW_MAX] = { [PERF_COUNT_HW_BRANCH_MISSES] = M1_PMU_PERFCTR_BRANCH_MISPRED_NONSPEC, }; +#define M1_PMUV3_EVENT_MAP(pmuv3_event, m1_event) \ + [ARMV8_PMUV3_PERFCTR_##pmuv3_event] = M1_PMU_PERFCTR_##m1_event + +static const u16 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 */ static ssize_t m1_pmu_events_sysfs_show(struct device *dev, struct device_attribute *attr, @@ -558,6 +570,26 @@ static int m2_pmu_map_event(struct perf_event *event) return armpmu_map_event(event, &m1_pmu_perf_map, NULL, M1_PMU_CFG_EVENT); } +static int m1_pmu_map_pmuv3_event(unsigned int eventsel) +{ + u16 m1_event = HW_OP_UNSUPPORTED; + + if (eventsel < ARMV8_PMUV3_MAX_COMMON_EVENTS) + m1_event = m1_pmu_pmceid_map[eventsel]; + + return m1_event == HW_OP_UNSUPPORTED ? -EOPNOTSUPP : m1_event; +} + +static void m1_pmu_init_pmceid(struct arm_pmu *pmu) +{ + unsigned int event; + + for (event = 0; event < ARMV8_PMUV3_MAX_COMMON_EVENTS; event++) { + if (m1_pmu_map_pmuv3_event(event) >= 0) + set_bit(event, pmu->pmceid_bitmap); + } +} + static void m1_pmu_reset(void *info) { int i; @@ -618,6 +650,9 @@ static int m1_pmu_init(struct arm_pmu *cpu_pmu, u32 flags) cpu_pmu->reset = m1_pmu_reset; cpu_pmu->set_event_filter = m1_pmu_set_event_filter; + cpu_pmu->map_pmuv3_event = m1_pmu_map_pmuv3_event; + m1_pmu_init_pmceid(cpu_pmu); + bitmap_set(cpu_pmu->cntr_mask, 0, M1_PMU_NR_COUNTERS); cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = &m1_pmu_events_attr_group; cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = &m1_pmu_format_attr_group; |