perf script: Use strtok_r() when parsing output field list

Just avoiding non-reentrant functions.

Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/n/tip-eqytykipd74epzl9aexvppcg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 46acc8ece41f..2dab70fba2ba 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1708,7 +1708,7 @@ static int parse_scriptname(const struct option *opt __maybe_unused,
 static int parse_output_fields(const struct option *opt __maybe_unused,
                             const char *arg, int unset __maybe_unused)
 {
-        char *tok;
+        char *tok, *strtok_saveptr = NULL;
         int i, imax = ARRAY_SIZE(all_output_options);
         int j;
         int rc = 0;
@@ -1769,7 +1769,7 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
                 }
         }
 
-        for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
+        for (tok = strtok_r(tok, ",", &strtok_saveptr); tok; tok = strtok_r(NULL, ",", &strtok_saveptr)) {
                 for (i = 0; i < imax; ++i) {
                         if (strcmp(tok, all_output_options[i].str) == 0)
                                 break;