perf tools: Delay loading symtabs till we hit a map with it

So that we can have a quicker start on perf top and even
speedups in the other tools, as we can have maps with no hits,
so no need to load its symtabs.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256773881-4191-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 3 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a02fc4146017..ee87640b3359 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -834,7 +834,7 @@ static void event__process_sample(const event_t *self, int counter)
                 map = thread__find_map(thread, ip);
                 if (map != NULL) {
                         ip = map->map_ip(map, ip);
-                        sym = map->dso->find_symbol(map->dso, ip);
+                        sym = map__find_symbol(map, ip, symbol_filter);
                         if (sym == NULL)
                                 return;
                         userspace_samples++;
@@ -879,8 +879,7 @@ static void event__process_mmap(event_t *self)
 
         if (thread != NULL) {
                 struct map *map = map__new(&self->mmap, NULL, 0,
-                                           sizeof(struct sym_entry),
-                                           symbol_filter);
+                                           sizeof(struct sym_entry));
                 if (map != NULL)
                         thread__insert_map(thread, map);
         }