perf sort: Do not compare dso again

The commit 09600e0f9ebb ("perf tools: Compare dso's also when comparing
symbols") added a comparison of dso when comparing symbol.

But if the sort key already has dso, it doesn't need to do it again
since entries have a different dso already filtered out.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: Frederic Weisbecker <fweisbec@gmail.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>
Cc: Rodrigo Campos <rodrigo@sdfg.com.ar>
Link: http://lkml.kernel.org/r/1387344086-12744-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 68a4fd2f505e..635cd8f8b22e 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -13,6 +13,7 @@ int		have_ignore_callees = 0;
 int             sort__need_collapse = 0;
 int             sort__has_parent = 0;
 int             sort__has_sym = 0;
+int             sort__has_dso = 0;
 enum sort_mode  sort__mode = SORT_MODE__NORMAL;
 
 enum sort_type  sort__first_dimension;
@@ -194,9 +195,11 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
          * comparing symbol address alone is not enough since it's a
          * relative address within a dso.
          */
-        ret = sort__dso_cmp(left, right);
-        if (ret != 0)
-                return ret;
+        if (!sort__has_dso) {
+                ret = sort__dso_cmp(left, right);
+                if (ret != 0)
+                        return ret;
+        }
 
         return _sort__sym_cmp(left->ms.sym, right->ms.sym);
 }
@@ -1061,6 +1064,8 @@ int sort_dimension__add(const char *tok)
                         sort__has_parent = 1;
                 } else if (sd->entry == &sort_sym) {
                         sort__has_sym = 1;
+                } else if (sd->entry == &sort_dso) {
+                        sort__has_dso = 1;
                 }
 
                 __sort_dimension__add(sd, i);