[PATCH 28/49] perf tools: Add testcase for managing maps with time

Jiri Olsa
2018-01-09T15:43:51Z

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