perf test: Use strerror_r instead of strerror

Use strerror_r instead of strerror in error messages for thread-safety.

Signed-off-by: Masami Hiramatsu <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Naohiro Aota <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/tests/builtin-test.c

···
 static int run_test(struct test *test)
 {
 	int status, err = -1, child = fork();
+	char sbuf[STRERR_BUFSIZE];
 
 	if (child < 0) {
-		pr_err("failed to fork test: %s\n", strerror(errno));
+		pr_err("failed to fork test: %s\n",
+			strerror_r(errno, sbuf, sizeof(sbuf)));
 		return -1;
 	}
 

tools/perf/tests/mmap-basic.c

···
 	unsigned int nr_events[nsyscalls],
 		     expected_nr_events[nsyscalls], i, j;
 	struct perf_evsel *evsels[nsyscalls], *evsel;
+	char sbuf[STRERR_BUFSIZE];
 
 	threads = thread_map__new(-1, getpid(), UINT_MAX);
 	if (threads == NULL) {
···
 	sched_setaffinity(0, sizeof(cpu_set), &cpu_set);
 	if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) {
 		pr_debug("sched_setaffinity() failed on CPU %d: %s ",
-			 cpus->map[0], strerror(errno));
+			 cpus->map[0], strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_free_cpus;
 	}
 
···
 		if (perf_evsel__open(evsels[i], cpus, threads) < 0) {
 			pr_debug("failed to open counter: %s, "
 				 "tweak /proc/sys/kernel/perf_event_paranoid?\n",
-				 strerror(errno));
+				 strerror_r(errno, sbuf, sizeof(sbuf)));
 			goto out_delete_evlist;
 		}
 
···
 
 	if (perf_evlist__mmap(evlist, 128, true) < 0) {
 		pr_debug("failed to mmap events: %d (%s)\n", errno,
-			 strerror(errno));
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 

tools/perf/tests/open-syscall-all-cpus.c

···
 	unsigned int nr_open_calls = 111, i;
 	cpu_set_t cpu_set;
 	struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
+	char sbuf[STRERR_BUFSIZE];
 
 	if (threads == NULL) {
 		pr_debug("thread_map__new\n");
···
 	if (perf_evsel__open(evsel, cpus, threads) < 0) {
 		pr_debug("failed to open counter: %s, "
 			 "tweak /proc/sys/kernel/perf_event_paranoid?\n",
-			 strerror(errno));
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_evsel_delete;
 	}
 
···
 		if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) {
 			pr_debug("sched_setaffinity() failed on CPU %d: %s ",
 				 cpus->map[cpu],
-				 strerror(errno));
+				 strerror_r(errno, sbuf, sizeof(sbuf)));
 			goto out_close_fd;
 		}
 		for (i = 0; i < ncalls; ++i) {

tools/perf/tests/open-syscall-tp-fields.c

···
 	struct perf_evlist *evlist = perf_evlist__new();
 	struct perf_evsel *evsel;
 	int err = -1, i, nr_events = 0, nr_polls = 0;
+	char sbuf[STRERR_BUFSIZE];
 
 	if (evlist == NULL) {
 		pr_debug("%s: perf_evlist__new\n", __func__);
···
 
 	err = perf_evlist__open(evlist);
 	if (err < 0) {
-		pr_debug("perf_evlist__open: %s\n", strerror(errno));
+		pr_debug("perf_evlist__open: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 
 	err = perf_evlist__mmap(evlist, UINT_MAX, false);
 	if (err < 0) {
-		pr_debug("perf_evlist__mmap: %s\n", strerror(errno));
+		pr_debug("perf_evlist__mmap: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 

tools/perf/tests/open-syscall.c

···
 	struct perf_evsel *evsel;
 	unsigned int nr_open_calls = 111, i;
 	struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
+	char sbuf[STRERR_BUFSIZE];
 
 	if (threads == NULL) {
 		pr_debug("thread_map__new\n");
···
 	if (perf_evsel__open_per_thread(evsel, threads) < 0) {
 		pr_debug("failed to open counter: %s, "
 			 "tweak /proc/sys/kernel/perf_event_paranoid?\n",
-			 strerror(errno));
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_evsel_delete;
 	}
 

tools/perf/tests/perf-record.c

···
 	int err = -1, errs = 0, i, wakeups = 0;
 	u32 cpu;
 	int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, };
+	char sbuf[STRERR_BUFSIZE];
 
 	if (evlist == NULL || argv == NULL) {
 		pr_debug("Not enough memory to create evlist\n");
···
 
 	err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask);
 	if (err < 0) {
-		pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno));
+		pr_debug("sched__get_first_possible_cpu: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 
···
 	 * So that we can check perf_sample.cpu on all the samples.
 	 */
 	if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, &cpu_mask) < 0) {
-		pr_debug("sched_setaffinity: %s\n", strerror(errno));
+		pr_debug("sched_setaffinity: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 
···
 	 */
 	err = perf_evlist__open(evlist);
 	if (err < 0) {
-		pr_debug("perf_evlist__open: %s\n", strerror(errno));
+		pr_debug("perf_evlist__open: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 
···
 	 */
 	err = perf_evlist__mmap(evlist, opts.mmap_pages, false);
 	if (err < 0) {
-		pr_debug("perf_evlist__mmap: %s\n", strerror(errno));
+		pr_debug("perf_evlist__mmap: %s\n",
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 

tools/perf/tests/rdpmc.c

···
 	};
 	u64 delta_sum = 0;
         struct sigaction sa;
+	char sbuf[STRERR_BUFSIZE];
 
 	sigfillset(&sa.sa_mask);
 	sa.sa_sigaction = segfault_handler;
···
 				 perf_event_open_cloexec_flag());
 	if (fd < 0) {
 		pr_err("Error: sys_perf_event_open() syscall returned "
-		       "with %d (%s)\n", fd, strerror(errno));
+		       "with %d (%s)\n", fd,
+		       strerror_r(errno, sbuf, sizeof(sbuf)));
 		return -1;
 	}
 
 	addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0);
 	if (addr == (void *)(-1)) {
 		pr_err("Error: mmap() syscall returned with (%s)\n",
-		       strerror(errno));
+		       strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_close;
 	}
 

tools/perf/tests/sw-clock.c

···
 	volatile int tmp = 0;
 	u64 total_periods = 0;
 	int nr_samples = 0;
+	char sbuf[STRERR_BUFSIZE];
 	union perf_event *event;
 	struct perf_evsel *evsel;
 	struct perf_evlist *evlist;
···
 
 		err = -errno;
 		pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n",
-			 strerror(errno), knob, (u64)attr.sample_freq);
+			 strerror_r(errno, sbuf, sizeof(sbuf)),
+			 knob, (u64)attr.sample_freq);
 		goto out_delete_evlist;
 	}
 
 	err = perf_evlist__mmap(evlist, 128, true);
 	if (err < 0) {
 		pr_debug("failed to mmap event: %d (%s)\n", errno,
-			 strerror(errno));
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 

tools/perf/tests/task-exit.c

···
 		.uses_mmap	= true,
 	};
 	const char *argv[] = { "true", NULL };
+	char sbuf[STRERR_BUFSIZE];
 
 	signal(SIGCHLD, sig_handler);
 
···
 
 	err = perf_evlist__open(evlist);
 	if (err < 0) {
-		pr_debug("Couldn't open the evlist: %s\n", strerror(-err));
+		pr_debug("Couldn't open the evlist: %s\n",
+			 strerror_r(-err, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}
 
 	if (perf_evlist__mmap(evlist, 128, true) < 0) {
 		pr_debug("failed to mmap events: %d (%s)\n", errno,
-			 strerror(errno));
+			 strerror_r(errno, sbuf, sizeof(sbuf)));
 		goto out_delete_evlist;
 	}