1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef PMU_EVENTS_H 3 #define PMU_EVENTS_H 4 5 #include <stdbool.h> 6 #include <stddef.h> 7 8 struct perf_pmu; 9 10 enum aggr_mode_class { 11 PerChip = 1, 12 PerCore 13 }; 14 15 /** 16 * enum metric_event_groups - How events within a pmu_metric should be grouped. 17 */ 18 enum metric_event_groups { 19 /** 20 * @MetricGroupEvents: Default, group events within the metric. 21 */ 22 MetricGroupEvents = 0, 23 /** 24 * @MetricNoGroupEvents: Don't group events for the metric. 25 */ 26 MetricNoGroupEvents = 1, 27 /** 28 * @MetricNoGroupEventsNmi: Don't group events for the metric if the NMI 29 * watchdog is enabled. 30 */ 31 MetricNoGroupEventsNmi = 2, 32 /** 33 * @MetricNoGroupEventsSmt: Don't group events for the metric if SMT is 34 * enabled. 35 */ 36 MetricNoGroupEventsSmt = 3, 37 }; 38 /* 39 * Describe each PMU event. Each CPU has a table of PMU events. 40 */ 41 struct pmu_event { 42 const char *name; 43 const char *compat; 44 const char *event; 45 const char *desc; 46 const char *topic; 47 const char *long_desc; 48 const char *pmu; 49 const char *unit; 50 bool perpkg; 51 bool deprecated; 52 }; 53 54 struct pmu_metric { 55 const char *pmu; 56 const char *metric_name; 57 const char *metric_group; 58 const char *metric_expr; 59 const char *metric_threshold; 60 const char *unit; 61 const char *compat; 62 const char *desc; 63 const char *long_desc; 64 const char *metricgroup_no_group; 65 const char *default_metricgroup_name; 66 enum aggr_mode_class aggr_mode; 67 enum metric_event_groups event_grouping; 68 }; 69 70 struct pmu_events_table; 71 struct pmu_metrics_table; 72 73 typedef int (*pmu_event_iter_fn)(const struct pmu_event *pe, 74 const struct pmu_events_table *table, 75 void *data); 76 77 typedef int (*pmu_metric_iter_fn)(const struct pmu_metric *pm, 78 const struct pmu_metrics_table *table, 79 void *data); 80 81 int pmu_events_table__for_each_event(const struct pmu_events_table *table, 82 struct perf_pmu *pmu, 83 pmu_event_iter_fn fn, 84 void *data); 85 int pmu_events_table__find_event(const struct pmu_events_table *table, 86 struct perf_pmu *pmu, 87 const char *name, 88 pmu_event_iter_fn fn, 89 void *data); 90 size_t pmu_events_table__num_events(const struct pmu_events_table *table, 91 struct perf_pmu *pmu); 92 93 int pmu_metrics_table__for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn, 94 void *data); 95 96 const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu); 97 const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu); 98 const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid); 99 const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid); 100 int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data); 101 int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data); 102 103 const struct pmu_events_table *find_sys_events_table(const char *name); 104 const struct pmu_metrics_table *find_sys_metrics_table(const char *name); 105 int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data); 106 int pmu_for_each_sys_metric(pmu_metric_iter_fn fn, void *data); 107 108 const char *describe_metricgroup(const char *group); 109 110 #endif 111