perf hists: Separate output fields parsing into setup_output_list function

Separating output fields parsing into setup_output_list function, so
it's separated from field_order string setup and could be reused later
in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1453109064-1026-14-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index ab1c21a950f6cedfef9b7912e8633cbb3ce9e504..36dbd5554f0e1d64fb96cec118de65904751ac71 100644 (file)
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -2535,6 +2535,26 @@ static int output_field_add(char *tok)
        return -ESRCH;
 }
 
+static int setup_output_list(char *str)
+{
+       char *tmp, *tok;
+       int ret = 0;
+
+       for (tok = strtok_r(str, ", ", &tmp);
+                       tok; tok = strtok_r(NULL, ", ", &tmp)) {
+               ret = output_field_add(tok);
+               if (ret == -EINVAL) {
+                       error("Invalid --fields key: `%s'", tok);
+                       break;
+               } else if (ret == -ESRCH) {
+                       error("Unknown --fields key: `%s'", tok);
+                       break;
+               }
+       }
+
+       return ret;
+}
+
 static void reset_dimensions(void)
 {
        unsigned int i;
@@ -2559,7 +2579,7 @@ bool is_strict_order(const char *order)
 
 static int __setup_output_field(void)
 {
-       char *tmp, *tok, *str, *strp;
+       char *str, *strp;
        int ret = -EINVAL;
 
        if (field_order == NULL)
@@ -2579,17 +2599,7 @@ static int __setup_output_field(void)
                goto out;
        }
 
-       for (tok = strtok_r(strp, ", ", &tmp);
-                       tok; tok = strtok_r(NULL, ", ", &tmp)) {
-               ret = output_field_add(tok);
-               if (ret == -EINVAL) {
-                       error("Invalid --fields key: `%s'", tok);
-                       break;
-               } else if (ret == -ESRCH) {
-                       error("Unknown --fields key: `%s'", tok);
-                       break;
-               }
-       }
+       ret = setup_output_list(strp);
 
 out:
        free(str);