lkml.org 
[lkml]   [2015]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 23/38] perf tools: Add a test case for timed map groups handling
Date
A test case for verifying thread->mg and ->mg_list handling during
time change and new thread__find_addr_map_time() and friends.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@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 | 88 +++++++++++++++++++++++++++++++++++++++
4 files changed, 94 insertions(+)
create mode 100644 tools/perf/tests/thread-mg-time.c

diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index bfa0aa35761f..b6f50e3e301f 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -27,6 +27,7 @@ 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 e4d335de19ea..8f61a7e291ee 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -175,6 +175,10 @@ static struct test {
.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 1090337f63e5..03557563f31d 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -53,6 +53,7 @@ int test__fdarray__filter(void);
int test__fdarray__add(void);
int test__thread_comm(void);
int test__thread_lookup_time(void);
+int test__thread_mg_time(void);

#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/tests/thread-mg-time.c b/tools/perf/tests/thread-mg-time.c
new file mode 100644
index 000000000000..69fd13752c1d
--- /dev/null
+++ b/tools/perf/tests/thread-mg-time.c
@@ -0,0 +1,88 @@
+#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(void)
+{
+ struct machines machines;
+ struct machine *machine;
+ struct thread *t;
+ struct map_groups *mg;
+ struct map *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;
+
+ 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_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);
+
+ 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_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 != 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;
+}
--
2.2.2


\
 
 \ /
  Last update: 2015-03-03 04:41    [W:1.780 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site