perf annotation: Add symbol__get_annotation

Add a new utility function to get an function annotation out of existing
code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1432749114-904-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 14 insertions, 7 deletions

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 7f5bdfc9bc87..bf8043009909 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -506,6 +506,17 @@ static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
         return 0;
 }
 
+static struct annotation *symbol__get_annotation(struct symbol *sym)
+{
+        struct annotation *notes = symbol__annotation(sym);
+
+        if (notes->src == NULL) {
+                if (symbol__alloc_hist(sym) < 0)
+                        return NULL;
+        }
+        return notes;
+}
+
 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
                                     int evidx, u64 addr)
 {
@@ -513,13 +524,9 @@ static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 
         if (sym == NULL)
                 return 0;
-
-        notes = symbol__annotation(sym);
-        if (notes->src == NULL) {
-                if (symbol__alloc_hist(sym) < 0)
-                        return -ENOMEM;
-        }
-
+        notes = symbol__get_annotation(sym);
+        if (notes == NULL)
+                return -ENOMEM;
         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 }