294 lines
9.2 KiB
C
294 lines
9.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __PMU_H
|
|
#define __PMU_H
|
|
|
|
#include <linux/bitmap.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/perf_event.h>
|
|
#include <linux/list.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include "parse-events.h"
|
|
#include "pmu-events/pmu-events.h"
|
|
|
|
struct evsel_config_term;
|
|
struct perf_cpu_map;
|
|
struct print_callbacks;
|
|
|
|
enum {
|
|
PERF_PMU_FORMAT_VALUE_CONFIG,
|
|
PERF_PMU_FORMAT_VALUE_CONFIG1,
|
|
PERF_PMU_FORMAT_VALUE_CONFIG2,
|
|
PERF_PMU_FORMAT_VALUE_CONFIG3,
|
|
PERF_PMU_FORMAT_VALUE_CONFIG_END,
|
|
};
|
|
|
|
#define PERF_PMU_FORMAT_BITS 64
|
|
#define MAX_PMU_NAME_LEN 128
|
|
|
|
struct perf_event_attr;
|
|
|
|
struct perf_pmu_caps {
|
|
char *name;
|
|
char *value;
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* struct perf_pmu
|
|
*/
|
|
struct perf_pmu {
|
|
/** @name: The name of the PMU such as "cpu". */
|
|
char *name;
|
|
/**
|
|
* @alias_name: Optional alternate name for the PMU determined in
|
|
* architecture specific code.
|
|
*/
|
|
char *alias_name;
|
|
/**
|
|
* @id: Optional PMU identifier read from
|
|
* <sysfs>/bus/event_source/devices/<name>/identifier.
|
|
*/
|
|
char *id;
|
|
/**
|
|
* @type: Perf event attributed type value, read from
|
|
* <sysfs>/bus/event_source/devices/<name>/type.
|
|
*/
|
|
__u32 type;
|
|
/**
|
|
* @selectable: Can the PMU name be selected as if it were an event?
|
|
*/
|
|
bool selectable;
|
|
/**
|
|
* @is_core: Is the PMU the core CPU PMU? Determined by the name being
|
|
* "cpu" or by the presence of
|
|
* <sysfs>/bus/event_source/devices/<name>/cpus. There may be >1 core
|
|
* PMU on systems like Intel hybrid.
|
|
*/
|
|
bool is_core;
|
|
/**
|
|
* @is_uncore: Is the PMU not within the CPU core? Determined by the
|
|
* presence of <sysfs>/bus/event_source/devices/<name>/cpumask.
|
|
*/
|
|
bool is_uncore;
|
|
/**
|
|
* @auxtrace: Are events auxiliary events? Determined in architecture
|
|
* specific code.
|
|
*/
|
|
bool auxtrace;
|
|
/**
|
|
* @formats_checked: Only check PMU's formats are valid for
|
|
* perf_event_attr once.
|
|
*/
|
|
bool formats_checked;
|
|
/** @config_masks_present: Are there config format values? */
|
|
bool config_masks_present;
|
|
/** @config_masks_computed: Set when masks are lazily computed. */
|
|
bool config_masks_computed;
|
|
/**
|
|
* @max_precise: Number of levels of :ppp precision supported by the
|
|
* PMU, read from
|
|
* <sysfs>/bus/event_source/devices/<name>/caps/max_precise.
|
|
*/
|
|
int max_precise;
|
|
/**
|
|
* @default_config: Optional default perf_event_attr determined in
|
|
* architecture specific code.
|
|
*/
|
|
struct perf_event_attr *default_config;
|
|
/**
|
|
* @cpus: Empty or the contents of either of:
|
|
* <sysfs>/bus/event_source/devices/<name>/cpumask.
|
|
* <sysfs>/bus/event_source/devices/<cpu>/cpus.
|
|
*/
|
|
struct perf_cpu_map *cpus;
|
|
/**
|
|
* @format: Holds the contents of files read from
|
|
* <sysfs>/bus/event_source/devices/<name>/format/. The contents specify
|
|
* which event parameter changes what config, config1 or config2 bits.
|
|
*/
|
|
struct list_head format;
|
|
/**
|
|
* @aliases: List of struct perf_pmu_alias. Each alias corresponds to an
|
|
* event read from <sysfs>/bus/event_source/devices/<name>/events/ or
|
|
* from json events in pmu-events.c.
|
|
*/
|
|
struct list_head aliases;
|
|
/** @caps_initialized: Has the list caps been initialized? */
|
|
bool caps_initialized;
|
|
/** @nr_caps: The length of the list caps. */
|
|
u32 nr_caps;
|
|
/**
|
|
* @caps: Holds the contents of files read from
|
|
* <sysfs>/bus/event_source/devices/<name>/caps/.
|
|
*
|
|
* The contents are pairs of the filename with the value of its
|
|
* contents, for example, max_precise (see above) may have a value of 3.
|
|
*/
|
|
struct list_head caps;
|
|
/** @list: Element on pmus list in pmu.c. */
|
|
struct list_head list;
|
|
|
|
/**
|
|
* @config_masks: Derived from the PMU's format data, bits that are
|
|
* valid within the config value.
|
|
*/
|
|
__u64 config_masks[PERF_PMU_FORMAT_VALUE_CONFIG_END];
|
|
|
|
/**
|
|
* @missing_features: Features to inhibit when events on this PMU are
|
|
* opened.
|
|
*/
|
|
struct {
|
|
/**
|
|
* @exclude_guest: Disables perf_event_attr exclude_guest and
|
|
* exclude_host.
|
|
*/
|
|
bool exclude_guest;
|
|
} missing_features;
|
|
};
|
|
|
|
/** @perf_pmu__fake: A special global PMU used for testing. */
|
|
extern struct perf_pmu perf_pmu__fake;
|
|
|
|
struct perf_pmu_info {
|
|
const char *unit;
|
|
double scale;
|
|
bool per_pkg;
|
|
bool snapshot;
|
|
};
|
|
|
|
#define UNIT_MAX_LEN 31 /* max length for event unit name */
|
|
|
|
/**
|
|
* struct perf_pmu_alias - An event either read from sysfs or builtin in
|
|
* pmu-events.c, created by parsing the pmu-events json files.
|
|
*/
|
|
struct perf_pmu_alias {
|
|
/** @name: Name of the event like "mem-loads". */
|
|
char *name;
|
|
/** @desc: Optional short description of the event. */
|
|
char *desc;
|
|
/** @long_desc: Optional long description. */
|
|
char *long_desc;
|
|
/**
|
|
* @topic: Optional topic such as cache or pipeline, particularly for
|
|
* json events.
|
|
*/
|
|
char *topic;
|
|
/**
|
|
* @str: Comma separated parameter list like
|
|
* "event=0xcd,umask=0x1,ldlat=0x3".
|
|
*/
|
|
char *str;
|
|
/** @terms: Owned list of the original parsed parameters. */
|
|
struct list_head terms;
|
|
/** @list: List element of struct perf_pmu aliases. */
|
|
struct list_head list;
|
|
/** @unit: Units for the event, such as bytes or cache lines. */
|
|
char unit[UNIT_MAX_LEN+1];
|
|
/** @scale: Value to scale read counter values by. */
|
|
double scale;
|
|
/**
|
|
* @per_pkg: Does the file
|
|
* <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.per-pkg or
|
|
* equivalent json value exist and have the value 1.
|
|
*/
|
|
bool per_pkg;
|
|
/**
|
|
* @snapshot: Does the file
|
|
* <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.snapshot
|
|
* exist and have the value 1.
|
|
*/
|
|
bool snapshot;
|
|
/**
|
|
* @deprecated: Is the event hidden and so not shown in perf list by
|
|
* default.
|
|
*/
|
|
bool deprecated;
|
|
/**
|
|
* @pmu_name: The name copied from the json struct pmu_event. This can
|
|
* differ from the PMU name as it won't have suffixes.
|
|
*/
|
|
char *pmu_name;
|
|
};
|
|
|
|
void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu);
|
|
int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
|
|
struct list_head *head_terms,
|
|
struct parse_events_error *error);
|
|
int perf_pmu__config_terms(const char *pmu_name, struct list_head *formats,
|
|
struct perf_event_attr *attr,
|
|
struct list_head *head_terms,
|
|
bool zero, struct parse_events_error *error);
|
|
__u64 perf_pmu__format_bits(struct list_head *formats, const char *name);
|
|
int perf_pmu__format_type(struct list_head *formats, const char *name);
|
|
int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
|
|
struct perf_pmu_info *info);
|
|
struct list_head *perf_pmu__alias(struct perf_pmu *pmu,
|
|
struct list_head *head_terms);
|
|
void perf_pmu_error(struct list_head *list, char *name, void *scanner, char const *msg);
|
|
|
|
int perf_pmu__new_format(struct list_head *list, char *name,
|
|
int config, unsigned long *bits);
|
|
void perf_pmu__set_format(unsigned long *bits, long from, long to);
|
|
int perf_pmu__format_parse(int dirfd, struct list_head *head);
|
|
void perf_pmu__del_formats(struct list_head *formats);
|
|
bool perf_pmu__has_format(const struct perf_pmu *pmu, const char *name);
|
|
|
|
bool is_pmu_core(const char *name);
|
|
bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
|
|
bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu);
|
|
bool perf_pmu__have_event(const struct perf_pmu *pmu, const char *name);
|
|
/**
|
|
* perf_pmu_is_software - is the PMU a software PMU as in it uses the
|
|
* perf_sw_context in the kernel?
|
|
*/
|
|
bool perf_pmu__is_software(const struct perf_pmu *pmu);
|
|
|
|
FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name);
|
|
FILE *perf_pmu__open_file_at(struct perf_pmu *pmu, int dirfd, const char *name);
|
|
|
|
int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...) __scanf(3, 4);
|
|
int perf_pmu__scan_file_at(struct perf_pmu *pmu, int dirfd, const char *name,
|
|
const char *fmt, ...) __scanf(4, 5);
|
|
|
|
bool perf_pmu__file_exists(struct perf_pmu *pmu, const char *name);
|
|
|
|
int perf_pmu__test(void);
|
|
|
|
struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu);
|
|
void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu,
|
|
const struct pmu_events_table *table);
|
|
|
|
char *perf_pmu__getcpuid(struct perf_pmu *pmu);
|
|
const struct pmu_events_table *pmu_events_table__find(void);
|
|
const struct pmu_metrics_table *pmu_metrics_table__find(void);
|
|
void perf_pmu_free_alias(struct perf_pmu_alias *alias);
|
|
|
|
int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
|
|
|
|
int perf_pmu__caps_parse(struct perf_pmu *pmu);
|
|
|
|
void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
|
|
const char *name, int config_num,
|
|
const char *config_name);
|
|
void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu);
|
|
|
|
int perf_pmu__match(char *pattern, char *name, char *tok);
|
|
|
|
char *pmu_find_real_name(const char *name);
|
|
char *pmu_find_alias_name(const char *name);
|
|
double perf_pmu__cpu_slots_per_cycle(void);
|
|
int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size);
|
|
int perf_pmu__pathname_scnprintf(char *buf, size_t size,
|
|
const char *pmu_name, const char *filename);
|
|
int perf_pmu__event_source_devices_fd(void);
|
|
int perf_pmu__pathname_fd(int dirfd, const char *pmu_name, const char *filename, int flags);
|
|
|
|
struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char *lookup_name);
|
|
struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pmus);
|
|
void perf_pmu__delete(struct perf_pmu *pmu);
|
|
|
|
#endif /* __PMU_H */
|