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Date: Tue, 15 Sep 2015 00:00:29 -0700
From: tip-bot for Kan Liang <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: mingo@...nel.org, acme@...hat.com, kan.liang@...el.com,
jolsa@...nel.org, tglx@...utronix.de, ak@...ux.intel.com,
linux-kernel@...r.kernel.org, hpa@...or.com
Subject: [tip:perf/core] perf test: Add entry to test cpu topology
Commit-ID: c84974ed9fb672930929e0d20ea3c366635a54aa
Gitweb: http://git.kernel.org/tip/c84974ed9fb672930929e0d20ea3c366635a54aa
Author: Kan Liang <kan.liang@...el.com>
AuthorDate: Fri, 4 Sep 2015 04:58:31 -0400
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 14 Sep 2015 12:50:17 -0300
perf test: Add entry to test cpu topology
This patch test cpu core_id and socket_id which are stored in perf_env.
Commiter note:
# perf test topo
40: Test topology in session: Ok
# perf test -v topo
40: Test topology in session:
--- start ---
test child forked, pid 31767
templ file: /tmp/perf-test-VTZ1PL
CPU 0, core 0, socket 0
CPU 1, core 1, socket 0
CPU 2, core 0, socket 0
CPU 3, core 1, socket 0
test child finished with 0
---- end ----
Test topology in session: Ok
#
Based-on-a-patch-by: Jiri Olsa <jolsa@...nel.org>
Signed-off-by: Kan Liang <kan.liang@...el.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Link: http://lkml.kernel.org/r/1441357111-64522-1-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/tests/Build | 1 +
tools/perf/tests/builtin-test.c | 4 ++
tools/perf/tests/tests.h | 1 +
tools/perf/tests/topology.c | 115 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 121 insertions(+)
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index 51fb737..c6f198ae 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
ifdef CONFIG_AUXTRACE
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 69a77f7..98b0b24 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -187,6 +187,10 @@ static struct test {
#endif
#endif
{
+ .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 4e2c545..0b35496 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -64,6 +64,7 @@ int test__kmod_path__parse(void);
int test__thread_map(void);
int test__llvm(void);
int test__insn_x86(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..c3aff53
--- /dev/null
+++ b/tools/perf/tests/topology.c
@@ -0,0 +1,115 @@
+#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;
+}
+
+static int session_write_header(char *path)
+{
+ struct perf_session *session;
+ struct perf_data_file file = {
+ .path = path,
+ .mode = PERF_DATA_MODE_WRITE,
+ };
+
+ 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);
+
+ return 0;
+}
+
+static int check_cpu_topology(char *path, struct cpu_map *map)
+{
+ struct perf_session *session;
+ struct perf_data_file file = {
+ .path = path,
+ .mode = PERF_DATA_MODE_READ,
+ };
+ int i;
+
+ 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);
+
+ return 0;
+}
+
+int test_session_topology(void)
+{
+ char path[PATH_MAX];
+ struct cpu_map *map;
+ int ret = -1;
+
+ TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
+
+ pr_debug("templ file: %s\n", path);
+
+ if (session_write_header(path))
+ goto free_path;
+
+ map = cpu_map__new(NULL);
+ if (map == NULL) {
+ pr_debug("failed to get system cpumap\n");
+ goto free_path;
+ }
+
+ if (check_cpu_topology(path, map))
+ goto free_map;
+ ret = 0;
+
+free_map:
+ cpu_map__put(map);
+free_path:
+ unlink(path);
+ return ret;
+}
--
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