[PATCH 13/19] perf tool: Skip symbols in exclude list while printing callchain

[David Ahern <dsahern@gmail.com>]

Leverage new exclude symbol list to allow user to not see certain functions
in a backtrace. For example repeating patterns like:
    do_select  core_sys_select  sys_select
can be reduced to just sys_select when dumping callchains, consuming less
real estate on the screen while still conveying the essential message - the
process is in a select call.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/util/session.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 5a89964..0eada12 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1522,6 +1522,9 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
 			if (!node)
 				break;
 
+			if (symbol__is_excluded(node->sym))
+				goto next;
+
 			if (print_ip)
 				printf("%c%16" PRIx64, s, node->ip);
 
@@ -1543,9 +1546,10 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
 			if (!print_oneline)
 				printf("\n");
 
-			callchain_cursor_advance(&callchain_cursor);
-
 			stack_depth--;
+
+next:
+			callchain_cursor_advance(&callchain_cursor);
 		}
 
 	} else {
-- 
1.7.10.1