diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 3064a05..4a158a0 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -105,6 +105,8 @@
 
 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
 
+void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
+	       struct dso *dso);
 struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
 		     unsigned int sym_priv_size);
 struct map *map__clone(struct map *self);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index d302e51..3b7ce1b 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -20,6 +20,18 @@
 	return n;
 }
 
+void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
+	       struct dso *dso)
+{
+	self->start    = start;
+	self->end      = end;
+	self->pgoff    = pgoff;
+	self->dso      = dso;
+	self->map_ip   = map__map_ip;
+	self->unmap_ip = map__unmap_ip;
+	RB_CLEAR_NODE(&self->rb_node);
+}
+
 struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
 		     unsigned int sym_priv_size)
 {
@@ -28,6 +40,7 @@
 	if (self != NULL) {
 		const char *filename = event->filename;
 		char newfilename[PATH_MAX];
+		struct dso *dso;
 		int anon;
 
 		if (cwd) {
@@ -47,20 +60,15 @@
 			filename = newfilename;
 		}
 
-		self->start = event->start;
-		self->end   = event->start + event->len;
-		self->pgoff = event->pgoff;
-
-		self->dso = dsos__findnew(filename, sym_priv_size);
-		if (self->dso == NULL)
+		dso = dsos__findnew(filename, sym_priv_size);
+		if (dso == NULL)
 			goto out_delete;
 
+		map__init(self, event->start, event->start + event->len,
+			  event->pgoff, dso);
+
 		if (self->dso == vdso || anon)
 			self->map_ip = self->unmap_ip = identity__map_ip;
-		else {
-			self->map_ip = map__map_ip;
-			self->unmap_ip = map__unmap_ip;
-		}
 	}
 	return self;
 out_delete:
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0273d83..13677b5 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1132,18 +1132,12 @@
 	struct map *self = malloc(sizeof(*self));
 
 	if (self != NULL) {
-		self->start = start;
 		/*
-		 * Will be filled after we load all the symbols
+		 * ->end will be filled after we load all the symbols
 		 */
-		self->end = 0;
-
-		self->pgoff = 0;
-		self->dso = dso;
-		self->map_ip = map__map_ip;
-		self->unmap_ip = map__unmap_ip;
-		RB_CLEAR_NODE(&self->rb_node);
+		map__init(self, start, 0, 0, dso);
 	}
+
 	return self;
 }