perf symbols: When not using modules, discard its symbols

Signed-off-by: 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: <1259346563-12568-10-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 b6a2941..b788c2f 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -381,6 +381,9 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread
 
                module = strchr(pos->name, '\t');
                if (module) {
+                       if (!thread->use_modules)
+                               goto discard_symbol;
+
                        *module++ = '\0';
 
                        if (strcmp(self->name, module)) {
@@ -420,7 +423,7 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread
                }
 
                if (filter && filter(curr_map, pos)) {
-                       rb_erase(&pos->rb_node, root);
+discard_symbol:                rb_erase(&pos->rb_node, root);
                        symbol__delete(pos);
                } else {
                        if (curr_map != map) {
@@ -1635,6 +1638,7 @@ int symbol__init(struct symbol_conf *conf)
                return -1;
        }
 
+       kthread->use_modules = pconf->use_modules;
        if (pconf->use_modules && thread__create_module_maps(kthread) < 0)
                pr_debug("Failed to load list of modules in use, "
                         "continuing...\n");

diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 3bdd9b2..59b0d9b 100644 (file)
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -10,6 +10,7 @@ struct thread {
        struct rb_root          maps[MAP__NR_TYPES];
        struct list_head        removed_maps[MAP__NR_TYPES];
        pid_t                   pid;
+       bool                    use_modules;
        char                    shortname[3];
        char                    *comm;
        int                     comm_len;