Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 24/49] perf tools: Add a test case for timed map groups handling | Date | Tue, 9 Jan 2018 16:34:57 +0100 |
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From: Namhyung Kim <namhyung@kernel.org>
A test case for verifying thread->mg and ->mg_list handling during time change and new thread__find_addr_map_by_time() and friends.
Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/n/tip-20jkz8hzs9njsvmrseo2o3s8@git.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/tests/Build | 1 + tools/perf/tests/builtin-test.c | 4 ++ tools/perf/tests/tests.h | 1 + tools/perf/tests/thread-mg-time.c | 94 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 100 insertions(+) create mode 100644 tools/perf/tests/thread-mg-time.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 973ee29c4235..a65e671e3372 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -26,6 +26,7 @@ perf-y += mmap-thread-lookup.o perf-y += thread-comm.o perf-y += thread-mg-share.o perf-y += thread-lookup-time.o +perf-y += thread-mg-time.o perf-y += switch-tracking.o perf-y += keep-tracking.o perf-y += code-reading.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 755f14661c7a..52c29269e247 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -279,6 +279,10 @@ static struct test generic_tests[] = { .func = test__thread_lookup_time, }, { + .desc = "Test thread map group handling with time", + .func = test__thread_mg_time, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 65aacf9c342d..dfc127165914 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -104,6 +104,7 @@ int test__clang_subtest_get_nr(void); int test__unit_number__scnprint(struct test *test, int subtest); int test__thread_comm(struct test *test, int subtest); int test__thread_lookup_time(struct test *test, int subtest); +int test__thread_mg_time(struct test *test, int subtest); bool test__bp_signal_is_supported(void); diff --git a/tools/perf/tests/thread-mg-time.c b/tools/perf/tests/thread-mg-time.c new file mode 100644 index 000000000000..6a735f59c097 --- /dev/null +++ b/tools/perf/tests/thread-mg-time.c @@ -0,0 +1,94 @@ +#include <linux/compiler.h> +#include "tests.h" +#include "machine.h" +#include "thread.h" +#include "map.h" +#include "debug.h" + +#define PERF_MAP_START 0x40000 + +int test__thread_mg_time(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machines machines; + struct machine *machine; + struct thread *t; + struct map_groups *mg; + struct map *map, *old_map; + struct addr_location al = { .map = NULL, }; + + /* + * This test is to check whether it can retrieve a correct map + * for a given time. When multi-file data storage is enabled, + * those task/comm/mmap events are processed first so the + * later sample should find a matching comm properly. + */ + machines__init(&machines); + machine = &machines.host; + + /* this is needed to add/find map by time */ + perf_has_index = true; + + t = machine__findnew_thread(machine, 0, 0); + mg = t->mg; + + map = dso__new_map("/usr/bin/perf"); + map->start = PERF_MAP_START; + map->end = PERF_MAP_START + 0x1000; + + thread__insert_map(t, map); + + if (verbose > 1) + map_groups__fprintf(t->mg, stderr); + + thread__find_addr_map(t, PERF_RECORD_MISC_USER, MAP__FUNCTION, + PERF_MAP_START, &al); + + TEST_ASSERT_VAL("cannot find mapping for perf", al.map != NULL); + TEST_ASSERT_VAL("non matched mapping found", al.map == map); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups == mg); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups == t->mg); + + thread__find_addr_map_by_time(t, PERF_RECORD_MISC_USER, MAP__FUNCTION, + PERF_MAP_START, &al, -1ULL); + + TEST_ASSERT_VAL("cannot find timed mapping for perf", al.map != NULL); + TEST_ASSERT_VAL("non matched timed mapping", al.map == map); + TEST_ASSERT_VAL("incorrect timed map groups", al.map->groups == mg); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups == t->mg); + + + pr_debug("simulate EXEC event (generate new mg)\n"); + __thread__set_comm(t, "perf-test", 10000, true); + + old_map = map; + + map = dso__new_map("/usr/bin/perf-test"); + map->start = PERF_MAP_START; + map->end = PERF_MAP_START + 0x2000; + + thread__insert_map(t, map); + + if (verbose > 1) + map_groups__fprintf(t->mg, stderr); + + thread__find_addr_map(t, PERF_RECORD_MISC_USER, MAP__FUNCTION, + PERF_MAP_START + 4, &al); + + TEST_ASSERT_VAL("cannot find mapping for perf-test", al.map != NULL); + TEST_ASSERT_VAL("invalid mapping found", al.map == map); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups != mg); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups == t->mg); + + pr_debug("searching map in the old mag groups\n"); + thread__find_addr_map_by_time(t, PERF_RECORD_MISC_USER, MAP__FUNCTION, + PERF_MAP_START, &al, 5000); + + TEST_ASSERT_VAL("cannot find timed mapping for perf-test", al.map != NULL); + TEST_ASSERT_VAL("non matched timed mapping", al.map == old_map); + TEST_ASSERT_VAL("incorrect timed map groups", al.map->groups == mg); + TEST_ASSERT_VAL("incorrect map groups", al.map->groups != t->mg); + + machine__delete_threads(machine); + machines__exit(&machines); + return 0; +} -- 2.13.6
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