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perf trace: Use strerror_r instead of strerror 

Use strerror_r instead of strerror in error message for thead-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/20140814022241.3545.97543.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu 2014-08-14 02:22:41 +00:00 committed by Arnaldo Carvalho de Melo
parent 809adea685
commit 942a91ed3f
1 changed files with 4 additions and 2 deletions
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6
tools/perf/builtin-trace.c
View File

@ -1750,7 +1750,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
signed_print:
fprintf(trace->output, ") = %d", ret);
} else if (ret < 0 && sc->fmt->errmsg) {
char bf[256];
char bf[STRERR_BUFSIZE];
const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
*e = audit_errno_to_name(-ret);
@ -2044,6 +2044,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
int err = -1, i;
unsigned long before;
const bool forks = argc > 0;
char sbuf[STRERR_BUFSIZE];
trace->live = true;
@ -2105,7 +2106,8 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
if (err < 0) {
fprintf(trace->output, "Couldn't mmap the events: %s\n", strerror(errno));
fprintf(trace->output, "Couldn't mmap the events: %s\n",
strerror_r(errno, sbuf, sizeof(sbuf)));
goto out_delete_evlist;
}