perf tools: Fix srcline sort key behavior

Currently the srcline sort key compares ip rather than srcline info.  I
guess this was due to a performance reason to run external addr2line
utility.  Now we have implemented the functionality inside, use the
srcline info when comparing hist entries.

Also constantly print "??:0" string for unknown srcline rather than
printing ip.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-10-git-send-email-namhyung@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 f732120..32c5637 100644 (file)
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -243,33 +243,32 @@ struct sort_entry sort_sym = {
 static int64_t
 sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
 {
-       return (int64_t)(right->ip - left->ip);
+       if (!left->srcline) {
+               if (!left->ms.map)
+                       left->srcline = SRCLINE_UNKNOWN;
+               else {
+                       struct map *map = left->ms.map;
+                       left->srcline = get_srcline(map->dso,
+                                           map__rip_2objdump(map, left->ip));
+               }
+       }
+       if (!right->srcline) {
+               if (!right->ms.map)
+                       right->srcline = SRCLINE_UNKNOWN;
+               else {
+                       struct map *map = right->ms.map;
+                       right->srcline = get_srcline(map->dso,
+                                           map__rip_2objdump(map, right->ip));
+               }
+       }
+       return strcmp(left->srcline, right->srcline);
 }
 
 static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
                                        size_t size,
                                        unsigned int width __maybe_unused)
 {
-       FILE *fp = NULL;
-       char *path = self->srcline;
-
-       if (path != NULL)
-               goto out_path;
-
-       if (!self->ms.map)
-               goto out_ip;
-
-       path = get_srcline(self->ms.map->dso, self->ip);
-       self->srcline = path;
-
-out_path:
-       if (fp)
-               pclose(fp);
-       return repsep_snprintf(bf, size, "%s", path);
-out_ip:
-       if (fp)
-               pclose(fp);
-       return repsep_snprintf(bf, size, "%-#*llx", BITS_PER_LONG / 4, self->ip);
+       return repsep_snprintf(bf, size, "%s", self->srcline);
 }
 
 struct sort_entry sort_srcline = {