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-.. SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-
-libperf
-
-The libperf library provides an API to access the linux kernel perf
-events subsystem. It provides the following high level objects:
-
- - struct perf_cpu_map
- - struct perf_thread_map
- - struct perf_evlist
- - struct perf_evsel
-
-reference
-=========
-Function reference by header files:
-
-perf/core.h
------------
-.. code-block:: c
-
- typedef int (\*libperf_print_fn_t)(enum libperf_print_level level,
- const char \*, va_list ap);
-
- void libperf_set_print(libperf_print_fn_t fn);
-
-perf/cpumap.h
--------------
-.. code-block:: c
-
- struct perf_cpu_map \*perf_cpu_map__dummy_new(void);
- struct perf_cpu_map \*perf_cpu_map__new(const char \*cpu_list);
- struct perf_cpu_map \*perf_cpu_map__read(FILE \*file);
- struct perf_cpu_map \*perf_cpu_map__get(struct perf_cpu_map \*map);
- void perf_cpu_map__put(struct perf_cpu_map \*map);
- int perf_cpu_map__cpu(const struct perf_cpu_map \*cpus, int idx);
- int perf_cpu_map__nr(const struct perf_cpu_map \*cpus);
- perf_cpu_map__for_each_cpu(cpu, idx, cpus)
-
-perf/threadmap.h
-----------------
-.. code-block:: c
-
- struct perf_thread_map \*perf_thread_map__new_dummy(void);
- void perf_thread_map__set_pid(struct perf_thread_map \*map, int thread, pid_t pid);
- char \*perf_thread_map__comm(struct perf_thread_map \*map, int thread);
- struct perf_thread_map \*perf_thread_map__get(struct perf_thread_map \*map);
- void perf_thread_map__put(struct perf_thread_map \*map);
-
-perf/evlist.h
--------------
-.. code-block::
-
- void perf_evlist__init(struct perf_evlist \*evlist);
- void perf_evlist__add(struct perf_evlist \*evlist,
- struct perf_evsel \*evsel);
- void perf_evlist__remove(struct perf_evlist \*evlist,
- struct perf_evsel \*evsel);
- struct perf_evlist \*perf_evlist__new(void);
- void perf_evlist__delete(struct perf_evlist \*evlist);
- struct perf_evsel\* perf_evlist__next(struct perf_evlist \*evlist,
- struct perf_evsel \*evsel);
- int perf_evlist__open(struct perf_evlist \*evlist);
- void perf_evlist__close(struct perf_evlist \*evlist);
- void perf_evlist__enable(struct perf_evlist \*evlist);
- void perf_evlist__disable(struct perf_evlist \*evlist);
- perf_evlist__for_each_evsel(evlist, pos)
- void perf_evlist__set_maps(struct perf_evlist \*evlist,
- struct perf_cpu_map \*cpus,
- struct perf_thread_map \*threads);
-
-perf/evsel.h
-------------
-.. code-block:: c
-
- struct perf_counts_values {
- union {
- struct {
- uint64_t val;
- uint64_t ena;
- uint64_t run;
- };
- uint64_t values[3];
- };
- };
-
- void perf_evsel__init(struct perf_evsel \*evsel,
- struct perf_event_attr \*attr);
- struct perf_evsel \*perf_evsel__new(struct perf_event_attr \*attr);
- void perf_evsel__delete(struct perf_evsel \*evsel);
- int perf_evsel__open(struct perf_evsel \*evsel, struct perf_cpu_map \*cpus,
- struct perf_thread_map \*threads);
- void perf_evsel__close(struct perf_evsel \*evsel);
- int perf_evsel__read(struct perf_evsel \*evsel, int cpu, int thread,
- struct perf_counts_values \*count);
- int perf_evsel__enable(struct perf_evsel \*evsel);
- int perf_evsel__disable(struct perf_evsel \*evsel);
- int perf_evsel__apply_filter(struct perf_evsel \*evsel, const char \*filter);
- struct perf_cpu_map \*perf_evsel__cpus(struct perf_evsel \*evsel);
- struct perf_thread_map \*perf_evsel__threads(struct perf_evsel \*evsel);
- struct perf_event_attr \*perf_evsel__attr(struct perf_evsel \*evsel);