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"
13 #include "map_symbol.h"
14 #include "mem-events.h"
16 struct evsel_config_term;
18 struct print_callbacks;
21 PERF_PMU_FORMAT_VALUE_CONFIG,
22 PERF_PMU_FORMAT_VALUE_CONFIG1,
23 PERF_PMU_FORMAT_VALUE_CONFIG2,
24 PERF_PMU_FORMAT_VALUE_CONFIG3,
25 PERF_PMU_FORMAT_VALUE_CONFIG_END,
28 #define PERF_PMU_FORMAT_BITS 64
29 #define MAX_PMU_NAME_LEN 128
31 struct perf_event_attr;
33 struct perf_pmu_caps {
36 struct list_head list;
43 /** @name: The name of the PMU such as "cpu". */
46 * @alias_name: Optional alternate name for the PMU determined in
47 * architecture specific code.
51 * @id: Optional PMU identifier read from
52 * <sysfs>/bus/event_source/devices/<name>/identifier.
56 * @type: Perf event attributed type value, read from
57 * <sysfs>/bus/event_source/devices/<name>/type.
61 * @selectable: Can the PMU name be selected as if it were an event?
65 * @is_core: Is the PMU the core CPU PMU? Determined by the name being
66 * "cpu" or by the presence of
67 * <sysfs>/bus/event_source/devices/<name>/cpus. There may be >1 core
68 * PMU on systems like Intel hybrid.
72 * @is_uncore: Is the PMU not within the CPU core? Determined by the
73 * presence of <sysfs>/bus/event_source/devices/<name>/cpumask.
77 * @auxtrace: Are events auxiliary events? Determined in architecture
82 * @formats_checked: Only check PMU's formats are valid for
83 * perf_event_attr once.
86 /** @config_masks_present: Are there config format values? */
87 bool config_masks_present;
88 /** @config_masks_computed: Set when masks are lazily computed. */
89 bool config_masks_computed;
91 * @max_precise: Number of levels of :ppp precision supported by the
93 * <sysfs>/bus/event_source/devices/<name>/caps/max_precise.
97 * @perf_event_attr_init_default: Optional function to default
98 * initialize PMU specific parts of the perf_event_attr.
100 void (*perf_event_attr_init_default)(const struct perf_pmu *pmu,
101 struct perf_event_attr *attr);
103 * @cpus: Empty or the contents of either of:
104 * <sysfs>/bus/event_source/devices/<name>/cpumask.
105 * <sysfs>/bus/event_source/devices/<cpu>/cpus.
107 struct perf_cpu_map *cpus;
109 * @format: Holds the contents of files read from
110 * <sysfs>/bus/event_source/devices/<name>/format/. The contents specify
111 * which event parameter changes what config, config1 or config2 bits.
113 struct list_head format;
115 * @aliases: List of struct perf_pmu_alias. Each alias corresponds to an
116 * event read from <sysfs>/bus/event_source/devices/<name>/events/ or
117 * from json events in pmu-events.c.
119 struct list_head aliases;
121 * @events_table: The events table for json events in pmu-events.c.
123 const struct pmu_events_table *events_table;
124 /** @sysfs_aliases: Number of sysfs aliases loaded. */
125 uint32_t sysfs_aliases;
126 /** @sysfs_aliases: Number of json event aliases loaded. */
127 uint32_t loaded_json_aliases;
128 /** @sysfs_aliases_loaded: Are sysfs aliases loaded from disk? */
129 bool sysfs_aliases_loaded;
131 * @cpu_aliases_added: Have all json events table entries for the PMU
134 bool cpu_aliases_added;
135 /** @caps_initialized: Has the list caps been initialized? */
136 bool caps_initialized;
137 /** @nr_caps: The length of the list caps. */
140 * @caps: Holds the contents of files read from
141 * <sysfs>/bus/event_source/devices/<name>/caps/.
143 * The contents are pairs of the filename with the value of its
144 * contents, for example, max_precise (see above) may have a value of 3.
146 struct list_head caps;
147 /** @list: Element on pmus list in pmu.c. */
148 struct list_head list;
151 * @config_masks: Derived from the PMU's format data, bits that are
152 * valid within the config value.
154 __u64 config_masks[PERF_PMU_FORMAT_VALUE_CONFIG_END];
157 * @missing_features: Features to inhibit when events on this PMU are
162 * @exclude_guest: Disables perf_event_attr exclude_guest and
169 * @mem_events: List of the supported mem events
171 struct perf_mem_event *mem_events;
174 /** @perf_pmu__fake: A special global PMU used for testing. */
175 extern struct perf_pmu perf_pmu__fake;
177 struct perf_pmu_info {
184 struct pmu_event_info {
185 const struct perf_pmu *pmu;
188 const char *scale_unit;
190 const char *long_desc;
191 const char *encoding_desc;
193 const char *pmu_name;
198 typedef int (*pmu_event_callback)(void *state, struct pmu_event_info *info);
200 void pmu_add_sys_aliases(struct perf_pmu *pmu);
201 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
202 struct parse_events_terms *head_terms,
203 struct parse_events_error *error);
204 int perf_pmu__config_terms(const struct perf_pmu *pmu,
205 struct perf_event_attr *attr,
206 struct parse_events_terms *terms,
207 bool zero, struct parse_events_error *error);
208 __u64 perf_pmu__format_bits(struct perf_pmu *pmu, const char *name);
209 int perf_pmu__format_type(struct perf_pmu *pmu, const char *name);
210 int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_terms,
211 struct perf_pmu_info *info, bool *rewrote_terms,
212 struct parse_events_error *err);
213 int perf_pmu__find_event(struct perf_pmu *pmu, const char *event, void *state, pmu_event_callback cb);
215 int perf_pmu__format_parse(struct perf_pmu *pmu, int dirfd, bool eager_load);
216 void perf_pmu_format__set_value(void *format, int config, unsigned long *bits);
217 bool perf_pmu__has_format(const struct perf_pmu *pmu, const char *name);
219 bool is_pmu_core(const char *name);
220 bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
221 bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu);
222 bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name);
223 size_t perf_pmu__num_events(struct perf_pmu *pmu);
224 int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus,
225 void *state, pmu_event_callback cb);
226 bool pmu__name_match(const struct perf_pmu *pmu, const char *pmu_name);
229 * perf_pmu_is_software - is the PMU a software PMU as in it uses the
230 * perf_sw_context in the kernel?
232 bool perf_pmu__is_software(const struct perf_pmu *pmu);
234 FILE *perf_pmu__open_file(const struct perf_pmu *pmu, const char *name);
235 FILE *perf_pmu__open_file_at(const struct perf_pmu *pmu, int dirfd, const char *name);
237 int perf_pmu__scan_file(const struct perf_pmu *pmu, const char *name, const char *fmt, ...)
239 int perf_pmu__scan_file_at(const struct perf_pmu *pmu, int dirfd, const char *name,
240 const char *fmt, ...) __scanf(4, 5);
242 bool perf_pmu__file_exists(const struct perf_pmu *pmu, const char *name);
244 int perf_pmu__test(void);
246 void perf_pmu__arch_init(struct perf_pmu *pmu);
247 void pmu_add_cpu_aliases_table(struct perf_pmu *pmu,
248 const struct pmu_events_table *table);
250 char *perf_pmu__getcpuid(struct perf_pmu *pmu);
251 const struct pmu_metrics_table *pmu_metrics_table__find(void);
252 bool pmu_uncore_identifier_match(const char *compat, const char *id);
254 int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
256 int perf_pmu__caps_parse(struct perf_pmu *pmu);
258 void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
259 const char *name, int config_num,
260 const char *config_name);
261 void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu);
263 int perf_pmu__match(const char *pattern, const char *name, const char *tok);
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 struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char *lookup_name);
273 struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pmus);
274 void perf_pmu__delete(struct perf_pmu *pmu);
275 struct perf_pmu *perf_pmus__find_core_pmu(void);