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9607ad3a63
And remove it from util.h, disentangling it a bit more. Link: http://lkml.kernel.org/n/tip-2zg9s5nx90yde64j3g4z2uhk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
375 lines
12 KiB
C
375 lines
12 KiB
C
#ifndef __PERF_EVLIST_H
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#define __PERF_EVLIST_H 1
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#include <linux/kernel.h>
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#include <linux/refcount.h>
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#include <linux/list.h>
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#include <api/fd/array.h>
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#include <stdio.h>
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#include "../perf.h"
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#include "event.h"
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#include "evsel.h"
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#include "util.h"
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#include "auxtrace.h"
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#include <signal.h>
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#include <unistd.h>
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struct pollfd;
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struct thread_map;
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struct cpu_map;
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struct record_opts;
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#define PERF_EVLIST__HLIST_BITS 8
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#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
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/**
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* struct perf_mmap - perf's ring buffer mmap details
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*
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* @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
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*/
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struct perf_mmap {
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void *base;
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int mask;
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int fd;
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refcount_t refcnt;
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u64 prev;
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struct auxtrace_mmap auxtrace_mmap;
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char event_copy[PERF_SAMPLE_MAX_SIZE] __attribute__((aligned(8)));
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};
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static inline size_t
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perf_mmap__mmap_len(struct perf_mmap *map)
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{
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return map->mask + 1 + page_size;
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}
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/*
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* State machine of bkw_mmap_state:
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*
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* .________________(forbid)_____________.
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* | V
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* NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
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* ^ ^ | ^ |
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* | |__(forbid)____/ |___(forbid)___/|
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* | |
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* \_________________(3)_______________/
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*
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* NOTREADY : Backward ring buffers are not ready
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* RUNNING : Backward ring buffers are recording
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* DATA_PENDING : We are required to collect data from backward ring buffers
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* EMPTY : We have collected data from backward ring buffers.
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*
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* (0): Setup backward ring buffer
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* (1): Pause ring buffers for reading
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* (2): Read from ring buffers
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* (3): Resume ring buffers for recording
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*/
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enum bkw_mmap_state {
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BKW_MMAP_NOTREADY,
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BKW_MMAP_RUNNING,
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BKW_MMAP_DATA_PENDING,
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BKW_MMAP_EMPTY,
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};
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struct perf_evlist {
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struct list_head entries;
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struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
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int nr_entries;
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int nr_groups;
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int nr_mmaps;
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bool overwrite;
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bool enabled;
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bool has_user_cpus;
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size_t mmap_len;
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int id_pos;
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int is_pos;
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u64 combined_sample_type;
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enum bkw_mmap_state bkw_mmap_state;
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struct {
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int cork_fd;
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pid_t pid;
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} workload;
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struct fdarray pollfd;
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struct perf_mmap *mmap;
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struct perf_mmap *backward_mmap;
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struct thread_map *threads;
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struct cpu_map *cpus;
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struct perf_evsel *selected;
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struct events_stats stats;
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struct perf_env *env;
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};
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struct perf_evsel_str_handler {
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const char *name;
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void *handler;
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};
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struct perf_evlist *perf_evlist__new(void);
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struct perf_evlist *perf_evlist__new_default(void);
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struct perf_evlist *perf_evlist__new_dummy(void);
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void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
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struct thread_map *threads);
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void perf_evlist__exit(struct perf_evlist *evlist);
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void perf_evlist__delete(struct perf_evlist *evlist);
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void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
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void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel);
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int perf_evlist__add_default(struct perf_evlist *evlist);
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int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
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struct perf_event_attr *attrs, size_t nr_attrs);
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#define perf_evlist__add_default_attrs(evlist, array) \
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__perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
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int perf_evlist__add_dummy(struct perf_evlist *evlist);
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int perf_evlist__add_newtp(struct perf_evlist *evlist,
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const char *sys, const char *name, void *handler);
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void __perf_evlist__set_sample_bit(struct perf_evlist *evlist,
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enum perf_event_sample_format bit);
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void __perf_evlist__reset_sample_bit(struct perf_evlist *evlist,
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enum perf_event_sample_format bit);
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#define perf_evlist__set_sample_bit(evlist, bit) \
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__perf_evlist__set_sample_bit(evlist, PERF_SAMPLE_##bit)
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#define perf_evlist__reset_sample_bit(evlist, bit) \
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__perf_evlist__reset_sample_bit(evlist, PERF_SAMPLE_##bit)
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int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
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int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid);
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int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids);
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struct perf_evsel *
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perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
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struct perf_evsel *
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perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
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const char *name);
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void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
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int cpu, int thread, u64 id);
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int perf_evlist__id_add_fd(struct perf_evlist *evlist,
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struct perf_evsel *evsel,
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int cpu, int thread, int fd);
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int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
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int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
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int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask);
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int perf_evlist__poll(struct perf_evlist *evlist, int timeout);
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struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
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struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist,
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u64 id);
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struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
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void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist, enum bkw_mmap_state state);
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union perf_event *perf_mmap__read_forward(struct perf_mmap *map, bool check_messup);
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union perf_event *perf_mmap__read_backward(struct perf_mmap *map);
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void perf_mmap__read_catchup(struct perf_mmap *md);
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void perf_mmap__consume(struct perf_mmap *md, bool overwrite);
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union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx);
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union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist,
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int idx);
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union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist,
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int idx);
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void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx);
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void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
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int perf_evlist__open(struct perf_evlist *evlist);
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void perf_evlist__close(struct perf_evlist *evlist);
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struct callchain_param;
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void perf_evlist__set_id_pos(struct perf_evlist *evlist);
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bool perf_can_sample_identifier(void);
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bool perf_can_record_switch_events(void);
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bool perf_can_record_cpu_wide(void);
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void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
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struct callchain_param *callchain);
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int record_opts__config(struct record_opts *opts);
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int perf_evlist__prepare_workload(struct perf_evlist *evlist,
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struct target *target,
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const char *argv[], bool pipe_output,
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void (*exec_error)(int signo, siginfo_t *info,
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void *ucontext));
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int perf_evlist__start_workload(struct perf_evlist *evlist);
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struct option;
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int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str);
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int perf_evlist__parse_mmap_pages(const struct option *opt,
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const char *str,
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int unset);
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unsigned long perf_event_mlock_kb_in_pages(void);
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int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
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bool overwrite, unsigned int auxtrace_pages,
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bool auxtrace_overwrite);
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int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
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bool overwrite);
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void perf_evlist__munmap(struct perf_evlist *evlist);
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size_t perf_evlist__mmap_size(unsigned long pages);
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void perf_evlist__disable(struct perf_evlist *evlist);
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void perf_evlist__enable(struct perf_evlist *evlist);
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void perf_evlist__toggle_enable(struct perf_evlist *evlist);
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int perf_evlist__enable_event_idx(struct perf_evlist *evlist,
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struct perf_evsel *evsel, int idx);
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void perf_evlist__set_selected(struct perf_evlist *evlist,
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struct perf_evsel *evsel);
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void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus,
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struct thread_map *threads);
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int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target);
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int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel);
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void __perf_evlist__set_leader(struct list_head *list);
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void perf_evlist__set_leader(struct perf_evlist *evlist);
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u64 perf_evlist__read_format(struct perf_evlist *evlist);
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u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
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u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
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u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist);
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bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
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u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
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int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
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struct perf_sample *sample);
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bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
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bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
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bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
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void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
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struct list_head *list);
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static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.next, struct perf_evsel, node);
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}
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static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.prev, struct perf_evsel, node);
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}
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size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
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int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size);
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int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size);
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static inline u64 perf_mmap__read_head(struct perf_mmap *mm)
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{
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struct perf_event_mmap_page *pc = mm->base;
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u64 head = ACCESS_ONCE(pc->data_head);
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rmb();
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return head;
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}
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static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail)
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{
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struct perf_event_mmap_page *pc = md->base;
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/*
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* ensure all reads are done before we write the tail out.
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*/
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mb();
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pc->data_tail = tail;
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}
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bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str);
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void perf_evlist__to_front(struct perf_evlist *evlist,
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struct perf_evsel *move_evsel);
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/**
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* __evlist__for_each_entry - iterate thru all the evsels
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry(list, evsel) \
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list_for_each_entry(evsel, list, node)
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/**
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* evlist__for_each_entry - iterate thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry(evlist, evsel) \
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__evlist__for_each_entry(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_continue - continue iteration thru all the evsels
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_continue(list, evsel) \
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list_for_each_entry_continue(evsel, list, node)
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/**
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* evlist__for_each_entry_continue - continue iteration thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry_continue(evlist, evsel) \
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__evlist__for_each_entry_continue(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_reverse(list, evsel) \
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list_for_each_entry_reverse(evsel, list, node)
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/**
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* evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry_reverse(evlist, evsel) \
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__evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @list: list_head instance to iterate
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* @tmp: struct evsel temp iterator
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_safe(list, tmp, evsel) \
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list_for_each_entry_safe(evsel, tmp, list, node)
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/**
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* evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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* @tmp: struct evsel temp iterator
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*/
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#define evlist__for_each_entry_safe(evlist, tmp, evsel) \
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__evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
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void perf_evlist__set_tracking_event(struct perf_evlist *evlist,
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struct perf_evsel *tracking_evsel);
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void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr);
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struct perf_evsel *
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perf_evlist__find_evsel_by_str(struct perf_evlist *evlist, const char *str);
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struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
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union perf_event *event);
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#endif /* __PERF_EVLIST_H */
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