perf tools: Fix session init on non-modular kernels

perf top and perf record refuses to initialize on non-modular kernels:
refuse to initialize:

 $ perf top -v
  map_groups__set_modules_path_dir: cannot open /lib/modules/2.6.33-rc6-tip-00586-g398dde3-dirty/

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1265223128-11786-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a60ba2ba1044f9ec4793330e93864ea5f4cc9d18..6882e9fec2d6261c6d2e81fd8b76d561dcc3af01 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1937,7 +1937,7 @@ int map_groups__create_kernel_maps(struct map_groups *self,
                return -1;
 
        if (symbol_conf.use_modules && map_groups__create_modules(self) < 0)
-               return -1;
+               return 0;
        /*
         * Now that we have all the maps created, just set the ->end of them:
         */