perf record: Use strerror_r instead of strerror

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

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naohiro Aota <naota@elisp.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20140814022243.3545.7411.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4db670d4b8da..87e28a4e33ba 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -161,7 +161,7 @@ try_again:
 
         if (perf_evlist__apply_filters(evlist)) {
                 error("failed to set filter with %d (%s)\n", errno,
-                        strerror(errno));
+                        strerror_r(errno, msg, sizeof(msg)));
                 rc = -1;
                 goto out;
         }
@@ -175,7 +175,8 @@ try_again:
                                "(current value: %u)\n", opts->mmap_pages);
                         rc = -errno;
                 } else {
-                        pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno));
+                        pr_err("failed to mmap with %d (%s)\n", errno,
+                                strerror_r(errno, msg, sizeof(msg)));
                         rc = -errno;
                 }
                 goto out;
@@ -480,7 +481,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
         }
 
         if (forks && workload_exec_errno) {
-                char msg[512];
+                char msg[STRERR_BUFSIZE];
                 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
                 pr_err("Workload failed: %s\n", emsg);
                 err = -1;