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

#ifndef __PERF_EVLIST_H
#define __PERF_EVLIST_H 1

#include <linux/list.h>
#include "../perf.h"
#include "event.h"

struct pollfd;
struct thread_map;
struct cpu_map;

#define PERF_EVLIST__HLIST_BITS 8
#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)

struct perf_evlist {
	struct list_head entries;
	struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
	int		 nr_entries;
	int		 nr_fds;
	int		 mmap_len;
	bool		 overwrite;
	union perf_event event_copy;
	struct perf_mmap *mmap;
	struct pollfd	 *pollfd;
	struct thread_map *threads;
	struct cpu_map	  *cpus;
};

struct perf_evsel;

struct perf_evlist *perf_evlist__new(struct cpu_map *cpus,
				     struct thread_map *threads);
void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
		       struct thread_map *threads);
void perf_evlist__exit(struct perf_evlist *evlist);
void perf_evlist__delete(struct perf_evlist *evlist);

void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
int perf_evlist__add_default(struct perf_evlist *evlist);

void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel,
			  int cpu, int thread, u64 id);

int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);

struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);

union perf_event *perf_evlist__read_on_cpu(struct perf_evlist *self, int cpu);

int perf_evlist__alloc_mmap(struct perf_evlist *evlist);
int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite);
void perf_evlist__munmap(struct perf_evlist *evlist);

static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
					 struct cpu_map *cpus,
					 struct thread_map *threads)
{
	evlist->cpus	= cpus;
	evlist->threads	= threads;
}

int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
			     pid_t target_tid, const char *cpu_list);
void perf_evlist__delete_maps(struct perf_evlist *evlist);
int perf_evlist__set_filters(struct perf_evlist *evlist);

#endif /* __PERF_EVLIST_H */