path: root/tools/perf/util/evsel.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_EVSEL_H
#define __PERF_EVSEL_H 1

#include <linux/list.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/types.h>
#include <linux/perf_event.h>
#include <linux/types.h>
#include <internal/evsel.h>
#include <perf/evsel.h>
#include "symbol_conf.h"
#include <internal/cpumap.h>

struct addr_location;
struct evsel;
union perf_event;

struct cgroup;

/*
 * The 'struct perf_evsel_config_term' is used to pass event
 * specific configuration data to perf_evsel__config routine.
 * It is allocated within event parsing and attached to
 * perf_evsel::config_terms list head.
*/
enum term_type {
	PERF_EVSEL__CONFIG_TERM_PERIOD,
	PERF_EVSEL__CONFIG_TERM_FREQ,
	PERF_EVSEL__CONFIG_TERM_TIME,
	PERF_EVSEL__CONFIG_TERM_CALLGRAPH,
	PERF_EVSEL__CONFIG_TERM_STACK_USER,
	PERF_EVSEL__CONFIG_TERM_INHERIT,
	PERF_EVSEL__CONFIG_TERM_MAX_STACK,
	PERF_EVSEL__CONFIG_TERM_MAX_EVENTS,
	PERF_EVSEL__CONFIG_TERM_OVERWRITE,
	PERF_EVSEL__CONFIG_TERM_DRV_CFG,
	PERF_EVSEL__CONFIG_TERM_BRANCH,
	PERF_EVSEL__CONFIG_TERM_PERCORE,
	PERF_EVSEL__CONFIG_TERM_AUX_OUTPUT,
};

struct perf_evsel_config_term {
	struct list_head	list;
	enum term_type	type;
	union {
		u64	period;
		u64	freq;
		bool	time;
		char	*callgraph;
		char	*drv_cfg;
		u64	stack_user;
		int	max_stack;
		bool	inherit;
		bool	overwrite;
		char	*branch;
		unsigned long max_events;
		bool	percore;
		bool	aux_output;
	} val;
	bool weak;
};

struct perf_stat_evsel;

typedef int (perf_evsel__sb_cb_t)(union perf_event *event, void *data);

enum perf_tool_event {
	PERF_TOOL_NONE		= 0,
	PERF_TOOL_DURATION_TIME = 1,
};

struct bpf_object;
struct perf_counts;

/** struct evsel - event selector
 *
 * @evlist - evlist this evsel is in, if it is in one.
 * @core - libperf evsel object
 * @name - Can be set to retain the original event name passed by the user,
 *         so that when showing results in tools such as 'perf stat', we
 *         show the name used, not some alias.
 * @id_pos: the position of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
 *          struct perf_record_sample
 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
 *          is used there is an id sample appended to non-sample events
 * @priv:   And what is in its containing unnamed union are tool specific
 */
struct evsel {
	struct perf_evsel	core;
	struct evlist	*evlist;
	char			*filter;
	struct perf_counts	*counts;
	struct perf_counts	*prev_raw_counts;
	int			idx;
	unsigned long		max_events;
	unsigned long		nr_events_printed;
	char			*name;
	double			scale;
	const char		*unit;
	struct tep_event	*tp_format;
	off_t			id_offset;
	struct perf_stat_evsel  *stats;
	void			*priv;
	u64			db_id;
	struct cgroup		*cgrp;
	void			*handler;
	unsigned int		sample_size;
	int			id_pos;
	int			is_pos;
	enum perf_tool_event	tool_event;
	bool			uniquified_name;
	bool			snapshot;
	bool 			supported;
	bool 			needs_swap;
	bool 			disabled;
	bool			no_aux_samples;
	bool			immediate;
	bool			tracking;
	bool			per_pkg;
	bool			precise_max;
	bool			ignore_missing_thread;
	bool			forced_leader;
	bool			use_uncore_alias;
	/* parse modifier helper */
	int			exclude_GH;
	int			sample_read;
	unsigned long		*per_pkg_mask;
	struct evsel		*leader;
	char			*group_name;
	bool			cmdline_group_boundary;
	struct list_head	config_terms;
	struct bpf_object	*bpf_obj;
	int			bpf_fd;
	bool			auto_merge_stats;
	bool			merged_stat;
	const char *		metric_expr;
	const char *		metric_name;
	struct evsel		**metric_events;
	struct evsel		*metric_leader;
	bool			collect_stat;
	bool			weak_group;
	bool			percore;
	const char		*pmu_name;
	struct {
		perf_evsel__sb_cb_t	*cb;
		void			*data;
	} side_band;
};

struct perf_missing_features {
	bool sample_id_all;
	bool exclude_guest;
	bool mmap2;
	bool cloexec;
	bool clockid;
	bool clockid_wrong;
	bool lbr_flags;
	bool write_backward;
	bool group_read;
	bool ksymbol;
	bool bpf;
	bool aux_output;
};

extern struct perf_missing_features perf_missing_features;

struct perf_cpu_map;
struct target;
struct thread_map;
struct record_opts;

static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
{
	return perf_evsel__cpus(&evsel->core);
}

static inline int perf_evsel__nr_cpus(struct evsel *evsel)
{
	return evsel__cpus(evsel)->nr;
}

void perf_counts_values__scale(struct perf_counts_values *count,
			       bool scale, s8 *pscaled);

void perf_evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
				struct perf_counts_values *count);

int perf_evsel__object_config(size_t object_size,
			      int (*init)(struct evsel *evsel),
			      void (*fini)(struct evsel *evsel));

struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);

static inline struct evsel *evsel__new(struct perf_event_attr *attr)
{
	return perf_evsel__new_idx(attr, 0);
}

struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);

/*
 * Returns pointer with encoded error via <linux/err.h> interface.
 */
static inline struct evsel *perf_evsel__newtp(const char *sys, const char *name)
{
	return perf_evsel__newtp_idx(sys, name, 0);
}

struct evsel *perf_evsel__new_cycles(bool precise);

struct tep_event *event_format__new(const char *sys, const char *name);

void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
void perf_evsel__exit(struct evsel *evsel);
void evsel__delete(struct evsel *evsel);

struct callchain_param;

void perf_evsel__config(struct evsel *evsel,
			struct record_opts *opts,
			struct callchain_param *callchain);
void perf_evsel__config_callchain(struct evsel *evsel,
				  struct record_opts *opts,
				  struct callchain_param *callchain);

int __perf_evsel__sample_size(u64 sample_type);
void perf_evsel__calc_id_pos(struct evsel *evsel);

bool perf_evsel__is_cache_op_valid(u8 type, u8 op);

#define PERF_EVSEL__MAX_ALIASES 8

extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
				       [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
					  [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
					      [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
					    char *bf, size_t size);
const char *perf_evsel__name(struct evsel *evsel);

const char *perf_evsel__group_name(struct evsel *evsel);
int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size);

void __perf_evsel__set_sample_bit(struct evsel *evsel,
				  enum perf_event_sample_format bit);
void __perf_evsel__reset_sample_bit(struct evsel *evsel,
				    enum perf_event_sample_format bit);

#define perf_evsel__set_sample_bit(evsel, bit) \
	__perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)

#define perf_evsel__reset_sample_bit(evsel, bit) \
	__perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)

void perf_evsel__set_sample_id(struct evsel *evsel,
			       bool use_sample_identifier);

int perf_evsel__set_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_addr_filter(struct evsel *evsel,
				   const char *filter</