diff options
| -rw-r--r-- | arch/x86/events/intel/core.c | 20 | ||||
| -rw-r--r-- | arch/x86/events/perf_event.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/perf_event.h | 4 |
3 files changed, 24 insertions, 1 deletions
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 2e1e26846050..e76e892f44cd 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -2816,6 +2816,9 @@ static void intel_pmu_enable_fixed(struct perf_event *event) return; idx = INTEL_PMC_IDX_FIXED_SLOTS; + + if (event->attr.config1 & INTEL_TD_CFG_METRIC_CLEAR) + bits |= INTEL_FIXED_3_METRICS_CLEAR; } intel_set_masks(event, idx); @@ -4071,7 +4074,12 @@ static int intel_pmu_hw_config(struct perf_event *event) * is used in a metrics group, it too cannot support sampling. */ if (intel_pmu_has_cap(event, PERF_CAP_METRICS_IDX) && is_topdown_event(event)) { - if (event->attr.config1 || event->attr.config2) + /* The metrics_clear can only be set for the slots event */ + if (event->attr.config1 && + (!is_slots_event(event) || (event->attr.config1 & ~INTEL_TD_CFG_METRIC_CLEAR))) + return -EINVAL; + + if (event->attr.config2) return -EINVAL; /* @@ -4680,6 +4688,8 @@ PMU_FORMAT_ATTR(in_tx, "config:32" ); PMU_FORMAT_ATTR(in_tx_cp, "config:33" ); PMU_FORMAT_ATTR(eq, "config:36" ); /* v6 + */ +PMU_FORMAT_ATTR(metrics_clear, "config1:0"); /* PERF_CAPABILITIES.RDPMC_METRICS_CLEAR */ + static ssize_t umask2_show(struct device *dev, struct device_attribute *attr, char *page) @@ -4699,6 +4709,7 @@ static struct device_attribute format_attr_umask2 = static struct attribute *format_evtsel_ext_attrs[] = { &format_attr_umask2.attr, &format_attr_eq.attr, + &format_attr_metrics_clear.attr, NULL }; @@ -4723,6 +4734,13 @@ evtsel_ext_is_visible(struct kobject *kobj, struct attribute *attr, int i) if (i == 1) return (mask & ARCH_PERFMON_EVENTSEL_EQ) ? attr->mode : 0; + /* PERF_CAPABILITIES.RDPMC_METRICS_CLEAR */ + if (i == 2) { + union perf_capabilities intel_cap = hybrid(dev_get_drvdata(dev), intel_cap); + + return intel_cap.rdpmc_metrics_clear ? attr->mode : 0; + } + return 0; } diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index 82c6f45ce975..31c2771545a6 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -624,6 +624,7 @@ union perf_capabilities { u64 pebs_output_pt_available:1; u64 pebs_timing_info:1; u64 anythread_deprecated:1; + u64 rdpmc_metrics_clear:1; }; u64 capabilities; }; diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index cb9c4679f45c..1ac79f361645 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -41,6 +41,7 @@ #define INTEL_FIXED_0_USER (1ULL << 1) #define INTEL_FIXED_0_ANYTHREAD (1ULL << 2) #define INTEL_FIXED_0_ENABLE_PMI (1ULL << 3) +#define INTEL_FIXED_3_METRICS_CLEAR (1ULL << 2) #define HSW_IN_TX (1ULL << 32) #define HSW_IN_TX_CHECKPOINTED (1ULL << 33) @@ -372,6 +373,9 @@ static inline bool use_fixed_pseudo_encoding(u64 code) #define INTEL_TD_METRIC_MAX INTEL_TD_METRIC_MEM_BOUND #define INTEL_TD_METRIC_NUM 8 +#define INTEL_TD_CFG_METRIC_CLEAR_BIT 0 +#define INTEL_TD_CFG_METRIC_CLEAR BIT_ULL(INTEL_TD_CFG_METRIC_CLEAR_BIT) + static inline bool is_metric_idx(int idx) { return (unsigned)(idx - INTEL_PMC_IDX_METRIC_BASE) < INTEL_TD_METRIC_NUM; |