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ec886bf538
Implement functions of initialization, finalization and processing of control command messages coming from control file descriptors. Allocate control file descriptor as descriptor at struct pollfd object of evsel_list for atomic poll() operation. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/62518ceb-1cc9-2aba-593b-55408d07c1bf@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
382 lines
12 KiB
C
382 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_EVLIST_H
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#define __PERF_EVLIST_H 1
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#include <linux/compiler.h>
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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 <internal/evlist.h>
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#include <internal/evsel.h>
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#include "events_stats.h"
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#include "evsel.h"
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#include <pthread.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 perf_cpu_map;
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struct record_opts;
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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 evlist {
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struct perf_evlist core;
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int nr_groups;
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bool enabled;
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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 mmap *mmap;
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struct mmap *overwrite_mmap;
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struct evsel *selected;
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struct events_stats stats;
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struct perf_env *env;
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void (*trace_event_sample_raw)(struct evlist *evlist,
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union perf_event *event,
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struct perf_sample *sample);
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u64 first_sample_time;
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u64 last_sample_time;
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struct {
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pthread_t th;
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volatile int done;
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} thread;
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struct {
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int fd; /* control file descriptor */
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int ack; /* ack file descriptor for control commands */
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int pos; /* index at evlist core object to check signals */
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} ctl_fd;
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};
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struct 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 evlist *evlist__new(void);
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struct evlist *perf_evlist__new_default(void);
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struct evlist *perf_evlist__new_dummy(void);
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void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
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struct perf_thread_map *threads);
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void evlist__exit(struct evlist *evlist);
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void evlist__delete(struct evlist *evlist);
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void evlist__add(struct evlist *evlist, struct evsel *entry);
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void evlist__remove(struct evlist *evlist, struct evsel *evsel);
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int __evlist__add_default(struct evlist *evlist, bool precise);
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static inline int evlist__add_default(struct evlist *evlist)
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{
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return __evlist__add_default(evlist, true);
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}
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int __evlist__add_default_attrs(struct evlist *evlist,
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struct perf_event_attr *attrs, size_t nr_attrs);
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#define evlist__add_default_attrs(evlist, array) \
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__evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
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int evlist__add_dummy(struct evlist *evlist);
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int perf_evlist__add_sb_event(struct evlist *evlist,
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struct perf_event_attr *attr,
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evsel__sb_cb_t cb,
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void *data);
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void evlist__set_cb(struct evlist *evlist, evsel__sb_cb_t cb, void *data);
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int perf_evlist__start_sb_thread(struct evlist *evlist,
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struct target *target);
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void perf_evlist__stop_sb_thread(struct evlist *evlist);
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int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler);
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int __evlist__set_tracepoints_handlers(struct evlist *evlist,
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const struct evsel_str_handler *assocs,
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size_t nr_assocs);
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#define evlist__set_tracepoints_handlers(evlist, array) \
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__evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
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void __perf_evlist__set_sample_bit(struct evlist *evlist,
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enum perf_event_sample_format bit);
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void __perf_evlist__reset_sample_bit(struct 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_tp_filter(struct evlist *evlist, const char *filter);
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int perf_evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid);
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int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
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int perf_evlist__append_tp_filter(struct evlist *evlist, const char *filter);
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int perf_evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid);
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int perf_evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
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struct evsel *
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perf_evlist__find_tracepoint_by_id(struct evlist *evlist, int id);
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struct evsel *
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perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
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const char *name);
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int evlist__add_pollfd(struct evlist *evlist, int fd);
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int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
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int evlist__poll(struct evlist *evlist, int timeout);
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struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id);
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struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,
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u64 id);
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struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id);
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void perf_evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
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void evlist__mmap_consume(struct evlist *evlist, int idx);
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int evlist__open(struct evlist *evlist);
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void evlist__close(struct evlist *evlist);
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struct callchain_param;
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void perf_evlist__set_id_pos(struct evlist *evlist);
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void perf_evlist__config(struct 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 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 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 evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
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unsigned int auxtrace_pages,
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bool auxtrace_overwrite, int nr_cblocks,
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int affinity, int flush, int comp_level);
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int evlist__mmap(struct evlist *evlist, unsigned int pages);
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void evlist__munmap(struct evlist *evlist);
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size_t evlist__mmap_size(unsigned long pages);
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void evlist__disable(struct evlist *evlist);
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void evlist__enable(struct evlist *evlist);
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void perf_evlist__toggle_enable(struct evlist *evlist);
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int perf_evlist__enable_event_idx(struct evlist *evlist,
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struct evsel *evsel, int idx);
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void perf_evlist__set_selected(struct evlist *evlist,
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struct evsel *evsel);
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int perf_evlist__create_maps(struct evlist *evlist, struct target *target);
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int perf_evlist__apply_filters(struct evlist *evlist, struct 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 evlist *evlist);
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u64 __evlist__combined_sample_type(struct evlist *evlist);
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u64 evlist__combined_sample_type(struct evlist *evlist);
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u64 evlist__combined_branch_type(struct evlist *evlist);
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bool evlist__sample_id_all(struct evlist *evlist);
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u16 perf_evlist__id_hdr_size(struct evlist *evlist);
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int perf_evlist__parse_sample(struct evlist *evlist, union perf_event *event,
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struct perf_sample *sample);
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int perf_evlist__parse_sample_timestamp(struct evlist *evlist,
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union perf_event *event,
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u64 *timestamp);
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bool evlist__valid_sample_type(struct evlist *evlist);
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bool evlist__valid_sample_id_all(struct evlist *evlist);
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bool perf_evlist__valid_read_format(struct evlist *evlist);
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void perf_evlist__splice_list_tail(struct evlist *evlist,
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struct list_head *list);
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static inline bool perf_evlist__empty(struct evlist *evlist)
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{
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return list_empty(&evlist->core.entries);
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}
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static inline struct evsel *evlist__first(struct evlist *evlist)
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{
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struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
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return container_of(evsel, struct evsel, core);
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}
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static inline struct evsel *evlist__last(struct evlist *evlist)
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{
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struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
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return container_of(evsel, struct evsel, core);
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}
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int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
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int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);
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bool perf_evlist__can_select_event(struct evlist *evlist, const char *str);
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void perf_evlist__to_front(struct evlist *evlist,
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struct 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, core.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)->core.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, core.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)->core.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, core.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)->core.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, core.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)->core.entries, tmp, evsel)
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#define evlist__for_each_cpu(evlist, index, cpu) \
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evlist__cpu_iter_start(evlist); \
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perf_cpu_map__for_each_cpu (cpu, index, (evlist)->core.all_cpus)
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struct evsel *perf_evlist__get_tracking_event(struct evlist *evlist);
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void perf_evlist__set_tracking_event(struct evlist *evlist,
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struct evsel *tracking_evsel);
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void evlist__cpu_iter_start(struct evlist *evlist);
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bool evsel__cpu_iter_skip(struct evsel *ev, int cpu);
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bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu);
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struct evsel *
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perf_evlist__find_evsel_by_str(struct evlist *evlist, const char *str);
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struct evsel *perf_evlist__event2evsel(struct evlist *evlist,
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union perf_event *event);
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bool perf_evlist__exclude_kernel(struct evlist *evlist);
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void perf_evlist__force_leader(struct evlist *evlist);
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struct evsel *perf_evlist__reset_weak_group(struct evlist *evlist,
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struct evsel *evsel,
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bool close);
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#define EVLIST_CTL_CMD_ENABLE_TAG "enable"
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#define EVLIST_CTL_CMD_DISABLE_TAG "disable"
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#define EVLIST_CTL_CMD_ACK_TAG "ack\n"
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#define EVLIST_CTL_CMD_MAX_LEN 64
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enum evlist_ctl_cmd {
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EVLIST_CTL_CMD_UNSUPPORTED = 0,
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EVLIST_CTL_CMD_ENABLE,
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EVLIST_CTL_CMD_DISABLE,
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EVLIST_CTL_CMD_ACK
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};
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int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack);
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int evlist__finalize_ctlfd(struct evlist *evlist);
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bool evlist__ctlfd_initialized(struct evlist *evlist);
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int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd);
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#endif /* __PERF_EVLIST_H */
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