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Date: Mon, 31 Aug 2015 07:21:22 -0400
From: Kan Liang <kan.liang@...el.com>
To: acme@...nel.org, jolsa@...nel.org
Cc: ak@...ux.intel.com, linux-kernel@...r.kernel.org,
Kan Liang <kan.liang@...el.com>
Subject: [PATCH V3 3/3] perf,test: test cpu topology
From: Jiri Olsa <jolsa@...nel.org>
This patch test cpu core_id and socket_id which are stored in perf_env.
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Signed-off-by: Kan Liang <kan.liang@...el.com>
---
Changes since jirka's original version
- Use pr_debug to replace fprintf
- Add date_size to avoid warning
- Introduce cpu_map, and compare core_id and socket_id
between cpu_map and perf_env
Changes since V2:
- unlink(path)
tools/perf/tests/Build | 1 +
tools/perf/tests/builtin-test.c | 4 ++
tools/perf/tests/tests.h | 1 +
tools/perf/tests/topology.c | 86 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 92 insertions(+)
create mode 100644 tools/perf/tests/topology.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index c1518bd..208bbdf 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -33,6 +33,7 @@ perf-y += parse-no-sample-id-all.o
perf-y += kmod-path.o
perf-y += thread-map.o
perf-y += llvm.o
+perf-y += topology.o
perf-$(CONFIG_X86) += perf-time-to-tsc.o
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 136cd93..6650f26 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -179,6 +179,10 @@ static struct test {
.func = test__llvm,
},
{
+ .desc = "Test topology in session",
+ .func = test_session_topology,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index bf113a2..95654d7 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -63,6 +63,7 @@ int test__fdarray__add(void);
int test__kmod_path__parse(void);
int test__thread_map(void);
int test__llvm(void);
+int test_session_topology(void);
#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c
new file mode 100644
index 0000000..c5345c9
--- /dev/null
+++ b/tools/perf/tests/topology.c
@@ -0,0 +1,86 @@
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "tests.h"
+#include "util.h"
+#include "session.h"
+#include "evlist.h"
+#include "debug.h"
+
+#define TEMPL "/tmp/perf-test-XXXXXX"
+#define DATA_SIZE 10
+
+static int get_temp(char *path)
+{
+ int fd;
+
+ strcpy(path, TEMPL);
+
+ fd = mkstemp(path);
+ if (fd < 0) {
+ perror("mkstemp failed");
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+int test_session_topology(void)
+{
+ struct perf_session *session;
+ char path[PATH_MAX];
+ struct cpu_map *map;
+ struct perf_data_file file = {
+ .path = path,
+ .mode = PERF_DATA_MODE_WRITE,
+ };
+ int i;
+
+ TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
+
+ pr_debug("krava %s\n", path);
+
+ session = perf_session__new(&file, false, NULL);
+ TEST_ASSERT_VAL("can't get session", session);
+
+ session->evlist = perf_evlist__new_default();
+ TEST_ASSERT_VAL("can't get evlist", session->evlist);
+
+ perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
+ perf_header__set_feat(&session->header, HEADER_NRCPUS);
+
+ session->header.data_size += DATA_SIZE;
+
+ TEST_ASSERT_VAL("failed to write header",
+ !perf_session__write_header(session, session->evlist, file.fd, true));
+
+ perf_session__delete(session);
+
+ map = cpu_map__new(NULL);
+ TEST_ASSERT_VAL("failed to get system cpumap", !(map == NULL));
+
+ file.mode = PERF_DATA_MODE_READ;
+ session = perf_session__new(&file, false, NULL);
+ TEST_ASSERT_VAL("can't get session", session);
+
+ for (i = 0; i < session->header.env.nr_cpus_online; i++) {
+ pr_debug("CPU %d, core %d, socket %d\n", i,
+ session->header.env.cpu[i].core_id,
+ session->header.env.cpu[i].socket_id);
+ }
+
+ for (i = 0; i < map->nr; i++) {
+ TEST_ASSERT_VAL("Core ID doesn't match",
+ (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i) & 0xffff)));
+
+ TEST_ASSERT_VAL("Socket ID doesn't match",
+ (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i)));
+ }
+
+ perf_session__delete(session);
+ cpu_map__put(map);
+ unlink(path);
+
+ return 0;
+}
--
1.8.3.1
--
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