Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 28/49] perf tools: Add testcase for managing maps with time | Date | Tue, 9 Jan 2018 16:35:01 +0100 |
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From: Namhyung Kim <namhyung@kernel.org>
This tests new map_groups__{insert,find}_by_time() API working correctly by using 3 * 100 maps.
Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-h0fna591s3uf1zyaftvos9hj@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-map-time.c | 91 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 97 insertions(+) create mode 100644 tools/perf/tests/thread-map-time.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index a65e671e3372..5b944c948445 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -27,6 +27,7 @@ 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 += thread-map-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 52c29269e247..675f188c9eca 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -283,6 +283,10 @@ static struct test generic_tests[] = { .func = test__thread_mg_time, }, { + .desc = "Test thread map lookup with time", + .func = test__thread_map_lookup_time, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index dfc127165914..be258a7f0d2f 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -105,6 +105,7 @@ 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); +int test__thread_map_lookup_time(struct test *test, int subtest); bool test__bp_signal_is_supported(void); diff --git a/tools/perf/tests/thread-map-time.c b/tools/perf/tests/thread-map-time.c new file mode 100644 index 000000000000..850078e15932 --- /dev/null +++ b/tools/perf/tests/thread-map-time.c @@ -0,0 +1,91 @@ +#include <linux/compiler.h> +#include "debug.h" +#include "tests.h" +#include "machine.h" +#include "thread.h" +#include "map.h" + +#define PERF_MAP_START 0x40000 +#define LIBC_MAP_START 0x80000 +#define VDSO_MAP_START 0x7F000 + +#define NR_MAPS 100 + +static int lookup_maps(struct map_groups *mg) +{ + struct map *map; + int i, ret = -1; + size_t n; + struct { + const char *path; + u64 start; + } maps[] = { + { "/usr/bin/perf", PERF_MAP_START }, + { "/usr/lib/libc.so", LIBC_MAP_START }, + { "[vdso]", VDSO_MAP_START }, + }; + + /* this is needed to insert/find map by time */ + perf_has_index = true; + + for (n = 0; n < ARRAY_SIZE(maps); n++) { + for (i = 0; i < NR_MAPS; i++) { + map = map__new2(maps[n].start, dso__new(maps[n].path), + MAP__FUNCTION, i * 10000); + if (map == NULL) { + pr_debug("memory allocation failed\n"); + goto out; + } + + map->end = map->start + 0x1000; + map_groups__insert_by_time(mg, map); + } + } + + if (verbose > 1) + map_groups__fprintf(mg, stderr); + + for (n = 0; n < ARRAY_SIZE(maps); n++) { + for (i = 0; i < NR_MAPS; i++) { + u64 timestamp = i * 10000; + + map = map_groups__find_by_time(mg, MAP__FUNCTION, + maps[n].start, + timestamp); + + TEST_ASSERT_VAL("cannot find map", map); + TEST_ASSERT_VAL("addr not matched", + map->start == maps[n].start); + TEST_ASSERT_VAL("pathname not matched", + !strcmp(map->dso->name, maps[n].path)); + TEST_ASSERT_VAL("timestamp not matched", + map->timestamp == timestamp); + } + } + + ret = 0; +out: + return ret; +} + +/* + * This test creates large number of overlapping maps for increasing + * time and find a map based on timestamp. + */ +int test__thread_map_lookup_time(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machines machines; + struct machine *machine; + struct thread *t; + int ret; + + machines__init(&machines); + machine = &machines.host; + + t = machine__findnew_thread(machine, 0, 0); + + ret = lookup_maps(t->mg); + + machine__delete_threads(machine); + return ret; +} -- 2.13.6
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