1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/bitmap.h>
6 #include <linux/compiler.h>
7 #include <linux/perf_event.h>
8 #include <linux/list.h>
11 #include "parse-events.h"
12 #include "pmu-events/pmu-events.h"
14 struct evsel_config_term;
16 struct print_callbacks;
19 PERF_PMU_FORMAT_VALUE_CONFIG,
20 PERF_PMU_FORMAT_VALUE_CONFIG1,
21 PERF_PMU_FORMAT_VALUE_CONFIG2,
22 PERF_PMU_FORMAT_VALUE_CONFIG3,
23 PERF_PMU_FORMAT_VALUE_CONFIG_END,
26 #define PERF_PMU_FORMAT_BITS 64
27 #define MAX_PMU_NAME_LEN 128
29 struct perf_event_attr;
31 struct perf_pmu_caps {
34 struct list_head list;
41 /** @name: The name of the PMU such as "cpu". */
44 * @alias_name: Optional alternate name for the PMU determined in
45 * architecture specific code.
49 * @id: Optional PMU identifier read from
50 * <sysfs>/bus/event_source/devices/<name>/identifier.
54 * @type: Perf event attributed type value, read from
55 * <sysfs>/bus/event_source/devices/<name>/type.
59 * @selectable: Can the PMU name be selected as if it were an event?
63 * @is_uncore: Is the PMU not within the CPU core? Determined by the
64 * presence of <sysfs>/bus/event_source/devices/<name>/cpumask.
68 * @auxtrace: Are events auxiliary events? Determined in architecture
73 * @max_precise: Number of levels of :ppp precision supported by the
75 * <sysfs>/bus/event_source/devices/<name>/caps/max_precise.
79 * @default_config: Optional default perf_event_attr determined in
80 * architecture specific code.
82 struct perf_event_attr *default_config;
84 * @cpus: Empty or the contents of either of:
85 * <sysfs>/bus/event_source/devices/<name>/cpumask.
86 * <sysfs>/bus/event_source/devices/<cpu>/cpus.
88 struct perf_cpu_map *cpus;
90 * @format: Holds the contents of files read from
91 * <sysfs>/bus/event_source/devices/<name>/format/. The contents specify
92 * which event parameter changes what config, config1 or config2 bits.
94 struct list_head format;
96 * @aliases: List of struct perf_pmu_alias. Each alias corresponds to an
97 * event read from <sysfs>/bus/event_source/devices/<name>/events/ or
98 * from json events in pmu-events.c.
100 struct list_head aliases;
101 /** @caps_initialized: Has the list caps been initialized? */
102 bool caps_initialized;
103 /** @nr_caps: The length of the list caps. */
106 * @caps: Holds the contents of files read from
107 * <sysfs>/bus/event_source/devices/<name>/caps/.
109 * The contents are pairs of the filename with the value of its
110 * contents, for example, max_precise (see above) may have a value of 3.
112 struct list_head caps;
113 /** @list: Element on pmus list in pmu.c. */
114 struct list_head list;
115 /** @hybrid_list: Element on perf_pmu__hybrid_pmus. */
116 struct list_head hybrid_list;
119 * @missing_features: Features to inhibit when events on this PMU are
124 * @exclude_guest: Disables perf_event_attr exclude_guest and
131 /** @perf_pmu__fake: A special global PMU used for testing. */
132 extern struct perf_pmu perf_pmu__fake;
134 struct perf_pmu_info {
141 #define UNIT_MAX_LEN 31 /* max length for event unit name */
144 * struct perf_pmu_alias - An event either read from sysfs or builtin in
145 * pmu-events.c, created by parsing the pmu-events json files.
147 struct perf_pmu_alias {
148 /** @name: Name of the event like "mem-loads". */
150 /** @desc: Optional short description of the event. */
152 /** @long_desc: Optional long description. */
155 * @topic: Optional topic such as cache or pipeline, particularly for
160 * @str: Comma separated parameter list like
161 * "event=0xcd,umask=0x1,ldlat=0x3".
164 /** @terms: Owned list of the original parsed parameters. */
165 struct list_head terms;
166 /** @list: List element of struct perf_pmu aliases. */
167 struct list_head list;
168 /** @unit: Units for the event, such as bytes or cache lines. */
169 char unit[UNIT_MAX_LEN+1];
170 /** @scale: Value to scale read counter values by. */
173 * @per_pkg: Does the file
174 * <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.per-pkg or
175 * equivalent json value exist and have the value 1.
179 * @snapshot: Does the file
180 * <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.snapshot
181 * exist and have the value 1.
185 * @deprecated: Is the event hidden and so not shown in perf list by
190 * @pmu_name: The name copied from the json struct pmu_event. This can
191 * differ from the PMU name as it won't have suffixes.
196 struct perf_pmu *perf_pmu__find(const char *name);
197 struct perf_pmu *perf_pmu__find_by_type(unsigned int type);
198 void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu);
199 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
200 struct list_head *head_terms,
201 struct parse_events_error *error);
202 int perf_pmu__config_terms(const char *pmu_name, struct list_head *formats,
203 struct perf_event_attr *attr,
204 struct list_head *head_terms,
205 bool zero, struct parse_events_error *error);
206 __u64 perf_pmu__format_bits(struct list_head *formats, const char *name);
207 int perf_pmu__format_type(struct list_head *formats, const char *name);
208 int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
209 struct perf_pmu_info *info);
210 struct list_head *perf_pmu__alias(struct perf_pmu *pmu,
211 struct list_head *head_terms);
212 void perf_pmu_error(struct list_head *list, char *name, void *scanner, char const *msg);
214 int perf_pmu__new_format(struct list_head *list, char *name,
215 int config, unsigned long *bits);
216 void perf_pmu__set_format(unsigned long *bits, long from, long to);
217 int perf_pmu__format_parse(int dirfd, struct list_head *head);
218 void perf_pmu__del_formats(struct list_head *formats);
220 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
222 bool is_pmu_core(const char *name);
223 bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
224 bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu);
225 void print_pmu_events(const struct print_callbacks *print_cb, void *print_state);
226 bool pmu_have_event(const char *pname, const char *name);
228 FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name);
229 FILE *perf_pmu__open_file_at(struct perf_pmu *pmu, int dirfd, const char *name);
231 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...) __scanf(3, 4);
232 int perf_pmu__scan_file_at(struct perf_pmu *pmu, int dirfd, const char *name,
233 const char *fmt, ...) __scanf(4, 5);
235 bool perf_pmu__file_exists(struct perf_pmu *pmu, const char *name);
237 int perf_pmu__test(void);
239 struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu);
240 void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu,
241 const struct pmu_events_table *table);
243 char *perf_pmu__getcpuid(struct perf_pmu *pmu);
244 const struct pmu_events_table *pmu_events_table__find(void);
245 const struct pmu_metrics_table *pmu_metrics_table__find(void);
246 void perf_pmu_free_alias(struct perf_pmu_alias *alias);
248 int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
250 int perf_pmu__caps_parse(struct perf_pmu *pmu);
252 void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
254 void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu);
256 bool perf_pmu__has_hybrid(void);
257 int perf_pmu__match(char *pattern, char *name, char *tok);
259 int perf_pmu__cpus_match(struct perf_pmu *pmu, struct perf_cpu_map *cpus,
260 struct perf_cpu_map **mcpus_ptr,
261 struct perf_cpu_map **ucpus_ptr);
263 char *pmu_find_real_name(const char *name);
264 char *pmu_find_alias_name(const char *name);
265 double perf_pmu__cpu_slots_per_cycle(void);
266 int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size);
267 int perf_pmu__pathname_scnprintf(char *buf, size_t size,
268 const char *pmu_name, const char *filename);
269 int perf_pmu__event_source_devices_fd(void);
270 int perf_pmu__pathname_fd(int dirfd, const char *pmu_name, const char *filename, int flags);
272 void perf_pmu__destroy(void);