perf callchain: Add callchain_cursor_snapshot()
authorNamhyung Kim <namhyung@kernel.org>
Mon, 10 Sep 2012 04:38:00 +0000 (13:38 +0900)
committerJiri Olsa <jolsa@kernel.org>
Sun, 1 Jun 2014 12:34:59 +0000 (14:34 +0200)
The callchain_cursor_snapshot() is for saving current status of the
callchain.  It'll be used to accumulate callchain information for each node.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arun Sharma <asharma@fb.com>
Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-9-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
tools/perf/util/callchain.h

index 24a53d562d0a3c970acf362f5fa6b23bab69b067..8f84423a75da74db5695c060cb13d15a8b503203 100644 (file)
@@ -167,4 +167,13 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *
 
 extern const char record_callchain_help[];
 int parse_callchain_report_opt(const char *arg);
+
+static inline void callchain_cursor_snapshot(struct callchain_cursor *dest,
+                                            struct callchain_cursor *src)
+{
+       *dest = *src;
+
+       dest->first = src->curr;
+       dest->nr -= src->pos;
+}
 #endif /* __PERF_CALLCHAIN_H */