diff options
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 46 | ||||
| -rw-r--r-- | drivers/perf/arm_pmu.c | 6 |
2 files changed, 32 insertions, 20 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 372317667773..b83f986e7fbf 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -921,7 +921,13 @@ static void armv8pmu_reset(void *info) ARMV8_PMU_PMCR_LC); } -static int armv8_pmuv3_map_event(struct perf_event *event) +static int __armv8_pmuv3_map_event(struct perf_event *event, + const unsigned (*extra_event_map) + [PERF_COUNT_HW_MAX], + const unsigned (*extra_cache_map) + [PERF_COUNT_HW_CACHE_MAX] + [PERF_COUNT_HW_CACHE_OP_MAX] + [PERF_COUNT_HW_CACHE_RESULT_MAX]) { int hw_event_id; struct arm_pmu *armpmu = to_arm_pmu(event->pmu); @@ -929,44 +935,44 @@ static int armv8_pmuv3_map_event(struct perf_event *event) hw_event_id = armpmu_map_event(event, &armv8_pmuv3_perf_map, &armv8_pmuv3_perf_cache_map, ARMV8_PMU_EVTYPE_EVENT); - if (hw_event_id < 0) - return hw_event_id; - /* disable micro/arch events not supported by this PMU */ - if ((hw_event_id < ARMV8_PMUV3_MAX_COMMON_EVENTS) && - !test_bit(hw_event_id, armpmu->pmceid_bitmap)) { - return -EOPNOTSUPP; + /* Onl expose micro/arch events supported by this PMU */ + if ((hw_event_id > 0) && (hw_event_id < ARMV8_PMUV3_MAX_COMMON_EVENTS) + && test_bit(hw_event_id, armpmu->pmceid_bitmap)) { + return hw_event_id; } - return hw_event_id; + return armpmu_map_event(event, extra_event_map, extra_cache_map, + ARMV8_PMU_EVTYPE_EVENT); +} + +static int armv8_pmuv3_map_event(struct perf_event *event) +{ + return __armv8_pmuv3_map_event(event, NULL, NULL); } static int armv8_a53_map_event(struct perf_event *event) { - return armpmu_map_event(event, &armv8_a53_perf_map, - &armv8_a53_perf_cache_map, - ARMV8_PMU_EVTYPE_EVENT); + return __armv8_pmuv3_map_event(event, &armv8_a53_perf_map, + &armv8_a53_perf_cache_map); } static int armv8_a57_map_event(struct perf_event *event) { - return armpmu_map_event(event, &armv8_a57_perf_map, - &armv8_a57_perf_cache_map, - ARMV8_PMU_EVTYPE_EVENT); + return __armv8_pmuv3_map_event(event, &armv8_a57_perf_map, + &armv8_a57_perf_cache_map); } static int armv8_thunder_map_event(struct perf_event *event) { - return armpmu_map_event(event, &armv8_thunder_perf_map, - &armv8_thunder_perf_cache_map, - ARMV8_PMU_EVTYPE_EVENT); + return __armv8_pmuv3_map_event(event, &armv8_thunder_perf_map, + &armv8_thunder_perf_cache_map); } static int armv8_vulcan_map_event(struct perf_event *event) { - return armpmu_map_event(event, &armv8_vulcan_perf_map, - &armv8_vulcan_perf_cache_map, - ARMV8_PMU_EVTYPE_EVENT); + return __armv8_pmuv3_map_event(event, &armv8_vulcan_perf_map, + &armv8_vulcan_perf_cache_map); } struct armv8pmu_probe_info { diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 1c5e0f333779..d14fc2e67f93 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -47,6 +47,9 @@ armpmu_map_cache_event(const unsigned (*cache_map) if (cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX) return -EINVAL; + if (!cache_map) + return -ENOENT; + ret = (int)(*cache_map)[cache_type][cache_op][cache_result]; if (ret == CACHE_OP_UNSUPPORTED) @@ -63,6 +66,9 @@ armpmu_map_hw_event(const unsigned (*event_map)[PERF_COUNT_HW_MAX], u64 config) if (config >= PERF_COUNT_HW_MAX) return -EINVAL; + if (!event_map) + return -ENOENT; + mapping = (*event_map)[config]; return mapping == HW_OP_UNSUPPORTED ? -ENOENT : mapping; } |