perf kvm: 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/20140814022251.3545.83718.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 14d03edc81c2..1a4ef9cd9d5f 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -990,6 +990,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
         int err, rc = -1;
         struct perf_evsel *pos;
         struct perf_evlist *evlist = kvm->evlist;
+        char sbuf[STRERR_BUFSIZE];
 
         perf_evlist__config(evlist, &kvm->opts);
 
@@ -1026,12 +1027,14 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
 
         err = perf_evlist__open(evlist);
         if (err < 0) {
-                printf("Couldn't create the events: %s\n", strerror(errno));
+                printf("Couldn't create the events: %s\n",
+                       strerror_r(errno, sbuf, sizeof(sbuf)));
                 goto out;
         }
 
         if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) {
-                ui__error("Failed to mmap the events: %s\n", strerror(errno));
+                ui__error("Failed to mmap the events: %s\n",
+                          strerror_r(errno, sbuf, sizeof(sbuf)));
                 perf_evlist__close(evlist);
                 goto out;
         }