/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_EVLIST_H
#define __PERF_EVLIST_H 1
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/refcount.h>
#include <linux/list.h>
#include <api/fd/array.h>
#include <internal/evlist.h>
#include <internal/evsel.h>
#include <perf/evlist.h>
#include "events_stats.h"
#include "evsel.h"
#include <pthread.h>
#include <signal.h>
#include <unistd.h>
struct pollfd;
struct thread_map;
struct perf_cpu_map;
struct record_opts;
/*
* State machine of bkw_mmap_state:
*
* .________________(forbid)_____________.
* | V
* NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
* ^ ^ | ^ |
* | |__(forbid)____/ |___(forbid)___/|
* | |
* \_________________(3)_______________/
*
* NOTREADY : Backward ring buffers are not ready
* RUNNING : Backward ring buffers are recording
* DATA_PENDING : We are required to collect data from backward ring buffers
* EMPTY : We have collected data from backward ring buffers.
*
* (0): Setup backward ring buffer
* (1): Pause ring buffers for reading
* (2): Read from ring buffers
* (3): Resume ring buffers for recording
*/
enum bkw_mmap_state {
BKW_MMAP_NOTREADY,
BKW_MMAP_RUNNING,
BKW_MMAP_DATA_PENDING,
BKW_MMAP_EMPTY,
};
struct event_enable_timer;
struct evlist {
struct perf_evlist core;
bool enabled;
int id_pos;
int is_pos;
u64 combined_sample_type;
enum bkw_mmap_state bkw_mmap_state;
struct {
int cork_fd;
pid_t pid;
} workload;
struct mmap *mmap;
struct mmap *overwrite_mmap;
struct evsel *selected;
struct events_stats stats;
struct perf_env *env;
void (*trace_event_sample_raw)(struct evlist *evlist,
union perf_event *event,
struct perf_sample *sample);
u64 first_sample_time;
u64 last_sample_time;
struct {
pthread_t th;
volatile int done;
} thread;
struct {
int fd; /* control file descriptor */
int ack; /* ack file descriptor for control commands */
int pos; /* index at evlist core object to check signals */
} ctl_fd;
struct event_enable_timer *eet;
};
struct evsel_str_handler {
const char *name;
void *handler;
};
struct evlist *evlist__new(void);
struct evlist *evlist__new_default(void);
struct evlist *evlist__new_dummy(void);
void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
void evlist__exit(struct evlist *evlist);
void evlist__delete(struct evlist *evlist);
void evlist__add(struct evlist *evlist, struct evsel *entry);
void evlist__remove(struct evlist *evlist, struct evsel *evsel);
int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs);
int __evlist__add_default_attrs(struct evlist *evlist,
struct perf_event_attr *attrs, size_t nr_attrs);
int arch_evlist__add_default_attrs(struct evlist *evlist,
struct perf_event_attr *attrs,
size_t nr_attrs);
#define evlist__add_default_attrs(evlist, array) \
arch_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs);
int evlist__add_dummy(struct evlist *evlist);
struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide);
static inline struct evsel *evlist__add_dummy_on_all_cpus(struct evlist *evlist)
{
return evlist__add_aux_dummy(evlist, true);
}
#ifdef HAVE_LIBTRACEEVENT
struct evsel *evlist__add_sched_switch(struct evlist *evlist, bool system_wide);
#endif
int evlist__add_sb_event(struct evlist *evlist, struct perf_event_attr *attr,
evsel__sb_cb_t cb, void *data);
void evlist__set_cb(struct evlist *evlist, evsel__sb_cb_t cb, void *data);
int evlist__start_sb_thread(struct evlist *evlist, struct target *target);
void evlist__stop_sb_thread(struct evlist *evlist);
#ifdef HAVE_LIBTRACEEVENT
int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler);
#endif
int __evlist__set_tracepoints_handlers(struct evlist *evlist,
const struct evsel_str_handler *assocs,
size_t nr_assocs);
#define evlist__set_tracepoints_handlers(evlist, array) \
__evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
int evlist__set_tp_filter(struct evlist *evlist, const char *filter);
int evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid);
int evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
int evlist__append_tp_filter(struct evlist *evlist, const char *filter);
int evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid);
int evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id);
struct evsel *evlist__find_tracepoint_by_name(struct evlist *evlist, const char *name);
int evlist__add_pollfd(struct evlist *evlist, int fd);
int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
#ifdef HAVE_EVENTFD_SUPPORT
int evlist__add_wakeup_eventfd(struct evlist *evlist, int fd);
#endif
int evlist__poll(struct evlist *evlist, int timeout);
struct evsel *evlist__id2evsel(struct evlist *evlist, u64 id);
struct evsel *evlist__id2evsel_strict(struct evlist *evlist, u64 id);
struct perf_sample_id *evlist__id2sid(struct evlist *evlist, u64 id);
void evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
void evlist__mmap_consume(struct evlist *evlist, int idx);
int evlist__open(struct evlist *evlist);
void evlist__close(struct evlist *evlist);
struct callchain_param;
void evlist__set_id_pos(struct evlist *evlist);
void evlist__config(struct evlist *evlist, struct record_opts *opts, struct callchain_param *callchain);
int record_opts__config(struct record_opts *opts);
int evlist__prepare_workload(struct evlist *evlist, struct target *target,
const char *argv[], bool pipe_output,
void (*exec_error)(int signo, siginfo_t *info, void *ucontext));
int evlist__start_workload(struct evlist *evlist);
struct option;
int __evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str);
int evlist__parse_mmap_pages(const struct option *opt, const char *str, int unset);
unsigned long perf_event_mlock_kb_in_pages(void);
int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
unsigned int auxtrace_pages,
bool auxtrace_overwrite, int nr_cblocks,
int affinity, int flush, int comp_level);
int evlist__mmap(struct evlist *evlist, unsigned int pages);
void evlist__munmap(struct evlist *evlist);
size_t evlist__mmap_size(unsigned long pages);
void evlist__disable(struct evlist *evlist);
void evlist__enable(struct evlist *evlist);
void evlist__toggle_enable(struct evlist *evlist);
void evlist__disable_evsel(struct evlist *evlist, char *evsel_name);
void evlist__enable_evsel(struct evlist *evlist, char *evsel_name);
void evlist__disable_non_dummy(struct evlist *evlist);
void evlist__enable_non_dummy(struct evlist *evlist);
void evlist__set_selected(struct evlist *evlist, struct evsel *evsel);
int evlist__create_maps(struct evlist *evlist, struct target *target);
int evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
u64 __evlist__combined_sample_type(struct evlist *evlist);
u64 evlist__combined_sample_type(struct evlist *evlist);
u64 evlist__combined_branch_type(struct evlist *evlist);
bool evlist__sample_id_all(struct evlist *evlist);
u16 evlist__id_hdr_size(struct evlist *evlist);
int evlist__parse_sample(struct evlist *evlist, union perf_event *event, struct perf_sample *sample);
int evlist__parse_sample_timestamp(struct evlist *evlist, union perf_event *event, u64 *timestamp);
bool evlist__valid_sample_type(struct evlist *evlist);
bool evlist__valid_sample_id_all(struct evlist *evlist);
bool evlist__valid_read_format(struct evlist *evlist);
void evlist__splice_list_tail(struct evlist *evlist, struct list_head *list);
static inline bool evlist__empty(struct evlist *evlist)
{
return list_empty(&evlist->core.entries);
}
static inline struct evsel *evlist__first(struct evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
return container_of(evsel, struct evsel, core);
}
static inline struct evsel *evlist__last(struct evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
return container_of(evsel, struct evsel, core);
}
static inline int evlist__nr_groups(struct evlist *evlist)
{
return perf_evlist__nr_groups(&evlist->core);
}
int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);
bool evlist__can_select_event(struct evlist *evlist, const char *str);
void evlist__to_front(struct evlist *evlist, struct evsel *move_evsel);
/**
* __evlist__for_each_entry - iterate thru all the evsels
* @list: list_head instance to iterate
* @evsel: struct evsel iterator
*/
#define __evlist__for_each_entry(list, evsel) \
list_for_each_entry(evsel, list, core.node)
/**
* evlist__for_each_entry - iterate thru all the evsels
* @evlist: evlist instance to iterate
* @evsel: struct evsel iterator
*/
#define evlist__for_each_entry(evlist, evsel) \
__evlist__for_each_entry(&(evlist)->core.entries, evsel)
/**
* __evlist__for_each_entry_continue - continue iteration thru all the evsels
* @list: list_head instance to iterate
* @evsel: struct evsel iterator
*/
#define __evlist__for_each_entry_continue(list, evsel) \
list_for_each_entry_continue(evsel, list, core.node)
/**
* evlist__for_each_entry_continue - continue iteration thru all the evsels
* @evlist: evlist instance to iterate
* @evsel: struct evsel iterator
*/
#define evlist__for_each_entry_continue(evlist, evsel) \
__evlist__for_each_entry_continue(&(evlist)->core.entries, evsel)
/**
* __evlist__for_each_entry_from - continue iteration from @evsel (included)
* @list: list_head instance to iterate
* @evsel: struct evsel iterator
*/
#define __evlist__for_each_entry_from(list, evsel) \
list_for_each_entry_from(evsel, list, core.node)
/**
* evlist__for_each_entry_from - continue iteration from @evsel (included)
* @evlist: evlist instance to iterate
* @evsel: struct evsel iterator
*/
#define evlist__for_each_entry_from(evlist, evsel) \
__evlist__for_each_entry_from(&(evlist)->core.entries, evsel)
/**
* __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
* @list: list_head instance to iterate
* @evsel: struct evsel iterator
*/
#define __evlist__for_each_entry_reverse(list, evsel) \
list_for_each_entry_reverse(evsel, list, core.node)
/**
* evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
* @evlist: evlist instance to iterate
* @evsel: struct evsel iterator
*/
#define evlist__for_each_entry_reverse(evlist, evsel) \
__evlist__for_each_entry_reverse(&(evlist)->core.entries, evsel)
/**
* __evlist__for_each_entry_safe - safely iterate thru all the evsels
* @list: list_head instance to iterate
* @tmp: struct evsel temp iterator
* @evsel: struct evsel iterator
*/
#define __evlist__for_each_entry_safe(list, tmp, evsel) \
list_for_each_entry_safe(evsel, tmp, list, core.node)
/**
* evlist__for_each_entry_safe - safely iterate thru all the evsels
* @evlist: evlist instance to iterate
* @evsel: struct evsel iterator
* @tmp: struct evsel temp iterator
*/
#define evlist__for_each_entry_safe(evlist, tmp, evsel) \
__evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel)
/** Iterator state for evlist__for_each_cpu */
struct evlist_cpu_iterator {
/** The list being iterated through. */
struct evlist *container;
/** The current evsel of the iterator. */
struct evsel *evsel;
/** The CPU map index corresponding to the evsel->core.cpus for the current CPU. */
int cpu_map_idx;
/**
* The CPU map index corresponding to evlist->core.all_cpus for the
* current CPU. Distinct from cpu_map_idx as the evsel's cpu map may
* contain fewer entries.
*/
int evlist_cpu_map_idx;
/** The number of CPU map entries in evlist->core.all_cpus. */
int evlist_cpu_map_nr;
/** The current CPU of the iterator. */
struct perf_cpu cpu;
/** If present, used to set the affinity when switching between CPUs. */
struct affinity *affinity;
};
/**
* evlist__for_each_cpu - without affinity, iterate over the evlist. With
* affinity, iterate over all CPUs and then the evlist
* for each evsel on that CPU. When switching between
* CPUs the affinity is set to the CPU to avoid IPIs
* during syscalls.
* @evlist_cpu_itr: the iterator instance.
* @evlist: evlist instance to iterate.
* @affinity: NULL or used to set the affinity to the current CPU.
*/
#define evlist__for_each_cpu(evlist_cpu_itr, evlist, affinity) \
for ((evlist_cpu_itr) = evlist__cpu_begin(evlist, affinity); \
!evlist_cpu_iterator__end(&evlist_cpu_itr); \
evlist_cpu_iterator__next(&evlist_cpu_itr))
/** Returns an iterator set to the first CPU/evsel of evlist. */
struct evlist_cpu_iterator evlist__cpu_begin(struct evlist *evlist, struct affinity *affinity);
/** Move to next element in iterator, updating CPU, evsel and the affinity. */
void evlist_cpu_iterator__next(struct evlist_cpu_iterator *evlist_cpu_itr);
/** Returns true when iterator is at the end of the CPUs and evlist. */
bool evlist_cpu_iterator__end(const struct evlist_cpu_iterator *evlist_cpu_itr);
struct evsel *evlist__get_tracking_event(struct evlist *evlist);
void evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_evsel);
struct evsel *evlist__findnew_tracking_event(struct evlist *evlist, bool system_wide);
struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str);
struct evsel *evlist__event2evsel(struct evlist *evlist, union perf_event *event);
bool evlist__exclude_kernel(struct evlist *evlist);
void evlist__force_leader(struct evlist *evlist);
struct evsel *evlist__reset_weak_group(struct evlist *evlist, struct evsel *evsel, bool close);
#define EVLIST_CTL_CMD_ENABLE_TAG "enable"
#define EVLIST_CTL_CMD_DISABLE_TAG "disable"
#define EVLIST_CTL_CMD_ACK_TAG "ack\n"
#define EVLIST_CTL_CMD_SNAPSHOT_TAG "snapshot"
#define EVLIST_CTL_CMD_EVLIST_TAG "evlist"
#define EVLIST_CTL_CMD_STOP_TAG "stop"
#define EVLIST_CTL_CMD_PING_TAG "ping"
#define EVLIST_CTL_CMD_MAX_LEN 64
enum evlist_ctl_cmd {
EVLIST_CTL_CMD_UNSUPPORTED = 0,
EVLIST_CTL_CMD_ENABLE,
EVLIST_CTL_CMD_DISABLE,
EVLIST_CTL_CMD_ACK,
EVLIST_CTL_CMD_SNAPSHOT,
EVLIST_CTL_CMD_EVLIST,
EVLIST_CTL_CMD_STOP,
EVLIST_CTL_CMD_PING,
};
int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close);
void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close);
int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack);
int evlist__finalize_ctlfd(struct evlist *evlist);
bool evlist__ctlfd_initialized(struct evlist *evlist);
int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd);
int evlist__ctlfd_ack(struct evlist *evlist);
#define EVLIST_ENABLED_MSG "Events enabled\n"
#define EVLIST_DISABLED_MSG "Events disabled\n"
int evlist__parse_event_enable_time(struct evlist *evlist, struct record_opts *opts,
const char *str, int unset);
int event_enable_timer__start(struct event_enable_timer *eet);
void event_enable_timer__exit(struct event_enable_timer **ep);
int event_enable_timer__process(struct event_enable_timer *eet);
struct evsel *evlist__find_evsel(struct evlist *evlist, int idx);
int evlist__scnprintf_evsels(struct evlist *evlist, size_t size, char *bf);
void evlist__check_mem_load_aux(struct evlist *evlist);
void evlist__warn_user_requested_cpus(struct evlist *evlist, const char *cpu_list);
void evlist__uniquify_name(struct evlist *evlist);
#endif /* __PERF_EVLIST_H */
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