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Diffstat (limited to 'tools/perf/util/unwind-libunwind.c')
-rw-r--r--tools/perf/util/unwind-libunwind.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index 854711966cad..6d542a4e0648 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -14,15 +14,19 @@ static void unwind__register_ops(struct thread *thread,
thread->unwind_libunwind_ops = ops;
}
-int unwind__prepare_access(struct thread *thread, struct map *map)
+int unwind__prepare_access(struct thread *thread, struct map *map,
+ bool *initialized)
{
const char *arch;
enum dso_type dso_type;
struct unwind_libunwind_ops *ops = local_unwind_libunwind_ops;
+ int err;
if (thread->addr_space) {
pr_debug("unwind: thread map already set, dso=%s\n",
map->dso->name);
+ if (initialized)
+ *initialized = true;
return 0;
}
@@ -51,7 +55,10 @@ int unwind__prepare_access(struct thread *thread, struct map *map)
out_register:
unwind__register_ops(thread, ops);
- return thread->unwind_libunwind_ops->prepare_access(thread);
+ err = thread->unwind_libunwind_ops->prepare_access(thread);
+ if (initialized)
+ *initialized = err ? false : true;
+ return err;
}
void unwind__flush_access(struct thread *thread)