1 // SPDX-License-Identifier: GPL-2.0-only 2 #ifndef METRICGROUP_H 3 #define METRICGROUP_H 1 4 5 #include <linux/list.h> 6 #include <linux/rbtree.h> 7 #include <stdbool.h> 8 #include "pmu-events/pmu-events.h" 9 10 struct evlist; 11 struct evsel; 12 struct option; 13 struct print_callbacks; 14 struct rblist; 15 struct cgroup; 16 17 /** 18 * A node in a rblist keyed by the evsel. The global rblist of metric events 19 * generally exists in perf_stat_config. The evsel is looked up in the rblist 20 * yielding a list of metric_expr. 21 */ 22 struct metric_event { 23 struct rb_node nd; 24 struct evsel *evsel; 25 struct list_head head; /* list of metric_expr */ 26 }; 27 28 /** 29 * A metric referenced by a metric_expr. When parsing a metric expression IDs 30 * will be looked up, matching either a value (from metric_events) or a 31 * metric_ref. A metric_ref will then be parsed recursively. The metric_refs and 32 * metric_events need to be known before parsing so that their values may be 33 * placed in the parse context for lookup. 34 */ 35 struct metric_ref { 36 const char *metric_name; 37 const char *metric_expr; 38 }; 39 40 /** 41 * One in a list of metric_expr associated with an evsel. The data is used to 42 * generate a metric value during stat output. 43 */ 44 struct metric_expr { 45 struct list_head nd; 46 /** The expression to parse, for example, "instructions/cycles". */ 47 const char *metric_expr; 48 /** The name of the meric such as "IPC". */ 49 const char *metric_name; 50 /** 51 * The "ScaleUnit" that scales and adds a unit to the metric during 52 * output. For example, "6.4e-05MiB" means to scale the resulting metric 53 * by 6.4e-05 (typically converting a unit like cache lines to something 54 * more human intelligible) and then add "MiB" afterward when displayed. 55 */ 56 const char *metric_unit; 57 /** Null terminated array of events used by the metric. */ 58 struct evsel **metric_events; 59 /** Null terminated array of referenced metrics. */ 60 struct metric_ref *metric_refs; 61 /** A value substituted for '?' during parsing. */ 62 int runtime; 63 }; 64 65 struct metric_event *metricgroup__lookup(struct rblist *metric_events, 66 struct evsel *evsel, 67 bool create); 68 int metricgroup__parse_groups(struct evlist *perf_evlist, 69 const char *str, 70 bool metric_no_group, 71 bool metric_no_merge, 72 const char *user_requested_cpu_list, 73 bool system_wide, 74 struct rblist *metric_events); 75 int metricgroup__parse_groups_test(struct evlist *evlist, 76 const struct pmu_events_table *table, 77 const char *str, 78 bool metric_no_group, 79 bool metric_no_merge, 80 struct rblist *metric_events); 81 82 void metricgroup__print(const struct print_callbacks *print_cb, void *print_state); 83 bool metricgroup__has_metric(const char *metric); 84 int arch_get_runtimeparam(const struct pmu_event *pe __maybe_unused); 85 void metricgroup__rblist_exit(struct rblist *metric_events); 86 87 int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp, 88 struct rblist *new_metric_events, 89 struct rblist *old_metric_events); 90 #endif 91