perf test: Add entry to test cpu topology (c84974ed) · Commits · 戴 / test

tools/perf/tests/Build

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

tools/perf/tests/builtin-test.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -186,6 +186,10 @@ static struct test {
		},
		#endif
		#endif
		{
		.desc = "Test topology in session",
		.func = test_session_topology,
		},
		{
		.func = NULL,
		},

tools/perf/tests/tests.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

tools/perf/tests/topology.c

0 → 100644

+115 −0

Original line number	Diff line number	Diff line
		#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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