Introduce perf_event__synthesize_thread_map2 function to synthesize struct thread_map.
The perf_event__synthesize_thread_map name is already taken for synthesizing complete threads data (comm/mmap/fork). Link: http://lkml.kernel.org/n/tip-cykuf1v8qb6li8q6w6tbm...@git.kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- tools/perf/tests/builtin-test.c | 4 ++++ tools/perf/tests/tests.h | 1 + tools/perf/tests/thread-map.c | 29 +++++++++++++++++++++++++++++ tools/perf/util/event.c | 36 ++++++++++++++++++++++++++++++++++++ tools/perf/util/event.h | 4 ++++ 5 files changed, 74 insertions(+) diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 66f72d3d6677..a59fd320da64 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -166,6 +166,10 @@ static struct test generic_tests[] = { .func = test_session_topology, }, { + .desc = "Test thread map synthesize", + .func = test__thread_map_synthesize, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index c80486969f83..2e280a5cd579 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -67,6 +67,7 @@ int test__kmod_path__parse(void); int test__thread_map(void); int test__llvm(void); int test_session_topology(void); +int test__thread_map_synthesize(void); #if defined(__arm__) || defined(__aarch64__) #ifdef HAVE_DWARF_UNWIND_SUPPORT diff --git a/tools/perf/tests/thread-map.c b/tools/perf/tests/thread-map.c index 138a0e3431fa..0facd9fa3458 100644 --- a/tools/perf/tests/thread-map.c +++ b/tools/perf/tests/thread-map.c @@ -40,3 +40,32 @@ int test__thread_map(void) thread_map__put(map); return 0; } + +static int process_event(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct thread_map_event *map = &event->thread_map; + + TEST_ASSERT_VAL("wrong nr", map->nr == 1); + TEST_ASSERT_VAL("wrong pid", map->data[0].pid == (u64) getpid()); + TEST_ASSERT_VAL("wrong comm", !strcmp(map->data[0].comm, "perf")); + return 0; +} + +int test__thread_map_synthesize(void) +{ + struct thread_map *threads; + + /* test map on current pid */ + threads = thread_map__new_by_pid(getpid()); + TEST_ASSERT_VAL("failed to alloc map", threads); + + thread_map__read_comms(threads); + + TEST_ASSERT_VAL("failed to synthesize map", + !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL)); + + return 0; +} diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 771545a27b9b..10e852201955 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -700,6 +700,42 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, return err; } +int perf_event__synthesize_thread_map2(struct perf_tool *tool, + struct thread_map *threads, + perf_event__handler_t process, + struct machine *machine) +{ + union perf_event *event; + int i, err, size; + + size = sizeof(event->thread_map); + size += threads->nr * sizeof(event->thread_map.data[0]); + + event = zalloc(size); + if (!event) + return -ENOMEM; + + event->header.type = PERF_RECORD_THREAD_MAP; + event->header.size = size; + event->thread_map.nr = threads->nr; + + for (i = 0; i < threads->nr; i++) { + struct thread_map_data_event *data = &event->thread_map.data[i]; + char *comm = thread_map__comm(threads, i); + + if (!comm) + comm = (char *) ""; + + data->pid = thread_map__pid(threads, i); + strncpy((char *) &data->comm, comm, sizeof(data->comm)); + } + + err = process(tool, event, NULL, machine); + + free(event); + return err; +} + size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) { const char *s; diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index f075f9ed0051..3ef69fef4497 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -408,6 +408,10 @@ int perf_event__synthesize_thread_map(struct perf_tool *tool, perf_event__handler_t process, struct machine *machine, bool mmap_data, unsigned int proc_map_timeout); +int perf_event__synthesize_thread_map2(struct perf_tool *tool, + struct thread_map *threads, + perf_event__handler_t process, + struct machine *machine); int perf_event__synthesize_threads(struct perf_tool *tool, perf_event__handler_t process, struct machine *machine, bool mmap_data, -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
