4 files changed, 35 insertions, 26 deletions

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 2ae1177be40..3064a05f0f5 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -106,10 +106,11 @@ struct symbol;
 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
 
 struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
-		     unsigned int sym_priv_size, symbol_filter_t filter);
+		     unsigned int sym_priv_size);
 struct map *map__clone(struct map *self);
 int map__overlap(struct map *l, struct map *r);
 size_t map__fprintf(struct map *self, FILE *fp);
+struct symbol *map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter);
 
 int event__synthesize_thread(pid_t pid, int (*process)(event_t *event));
 void event__synthesize_threads(int (*process)(event_t *event));
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index c1c55682534..d302e513e06 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -21,7 +21,7 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
 }
 
 struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
-		     unsigned int sym_priv_size, symbol_filter_t filter)
+		     unsigned int sym_priv_size)
 {
 	struct map *self = malloc(sizeof(*self));
 
@@ -29,7 +29,6 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
 		const char *filename = event->filename;
 		char newfilename[PATH_MAX];
 		int anon;
-		bool new_dso;
 
 		if (cwd) {
 			int n = strcommon(filename, cwd, cwdlen);
@@ -52,23 +51,10 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
 		self->end   = event->start + event->len;
 		self->pgoff = event->pgoff;
 
-		self->dso = dsos__findnew(filename, sym_priv_size, &new_dso);
+		self->dso = dsos__findnew(filename, sym_priv_size);
 		if (self->dso == NULL)
 			goto out_delete;
 
-		if (new_dso) {
-			int nr = dso__load(self->dso, self, filter);
-
-			if (nr < 0)
-				pr_warning("Failed to open %s, continuing "
-					   "without symbols\n",
-					   self->dso->long_name);
-			else if (nr == 0)
-				pr_warning("No symbols found in %s, maybe "
-					   "install a debug package?\n",
-					   self->dso->long_name);
-		}
-
 		if (self->dso == vdso || anon)
 			self->map_ip = self->unmap_ip = identity__map_ip;
 		else {
@@ -82,6 +68,26 @@ out_delete:
 	return NULL;
 }
 
+struct symbol *
+map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
+{
+	if (!self->dso->loaded) {
+		int nr = dso__load(self->dso, self, filter);
+
+		if (nr < 0) {
+			pr_warning("Failed to open %s, continuing without symbols\n",
+				   self->dso->long_name);
+			return NULL;
+		} else if (nr == 0) {
+			pr_warning("No symbols found in %s, maybe install a debug package?\n",
+				   self->dso->long_name);
+			return NULL;
+		}
+	}
+
+	return self->dso->find_symbol(self->dso, ip);
+}
+
 struct map *map__clone(struct map *self)
 {
 	struct map *map = malloc(sizeof(*self));
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 8f0208ce237..0273d83f728 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -909,6 +909,8 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
 	int ret = -1;
 	int fd;
 
+	self->loaded = true;
+
 	if (!name)
 		return -1;
 
@@ -1019,6 +1021,8 @@ static int dso__load_module_sym(struct dso *self, struct map *map,
 {
 	int err = 0, fd = open(self->long_name, O_RDONLY);
 
+	self->loaded = true;
+
 	if (fd < 0) {
 		pr_err("%s: cannot open %s\n", __func__, self->long_name);
 		return err;
@@ -1214,6 +1218,8 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
 {
 	int err, fd = open(vmlinux, O_RDONLY);
 
+	self->loaded = true;
+
 	if (fd < 0)
 		return -1;
 
@@ -1312,19 +1318,15 @@ static struct dso *dsos__find(const char *name)
 	return NULL;
 }
 
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
-			  bool *is_new)
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size)
 {
 	struct dso *dso = dsos__find(name);
 
 	if (!dso) {
 		dso = dso__new(name, sym_priv_size);
-		if (dso) {
+		if (dso != NULL)
 			dsos__add(dso);
-			*is_new = true;
-		}
-	} else
-		*is_new = false;
+	}
 
 	return dso;
 }
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 77b7b3e4241..432edbca780 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -46,6 +46,7 @@ struct dso {
 	unsigned int	 sym_priv_size;
 	unsigned char	 adjust_symbols;
 	unsigned char	 slen_calculated;
+	bool		 loaded;
 	unsigned char	 origin;
 	const char	 *short_name;
 	char	 	 *long_name;
@@ -64,8 +65,7 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip);
 
 int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
 		      symbol_filter_t filter, int modules);
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
-			  bool *is_new);
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size);
 int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
 void dsos__fprintf(FILE *fp);