perf symbols: Don't try to read the build-id twice

In __dsos__read_build_ids if the dso already had its build-id read,
don't try again.

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a06131f..87d9b1b 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1131,6 +1131,10 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits)
        list_for_each_entry(pos, head, node) {
                if (with_hits && !pos->hit)
                        continue;
+               if (pos->has_build_id) {
+                       have_build_id = true;
+                       continue;
+               }
                if (filename__read_build_id(pos->long_name, pos->build_id,
                                            sizeof(pos->build_id)) > 0) {
                        have_build_id     = true;