perf scripting: Add 'flush' callback to scripting API

In order to defer some output via the scripting API, there needs to be a
callback after session processing but before the session is deleted.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 13 insertions, 0 deletions

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index c1b7029884b1..02dce9295e2c 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -485,6 +485,11 @@ static int default_start_script(const char *script __maybe_unused,
 	return 0;
 }
 
+static int default_flush_script(void)
+{
+	return 0;
+}
+
 static int default_stop_script(void)
 {
 	return 0;
@@ -498,6 +503,7 @@ static int default_generate_script(struct pevent *pevent __maybe_unused,
 
 static struct scripting_ops default_scripting_ops = {
 	.start_script		= default_start_script,
+	.flush_script		= default_flush_script,
 	.stop_script		= default_stop_script,
 	.process_event		= process_event,
 	.generate_script	= default_generate_script,
@@ -513,6 +519,11 @@ static void setup_scripting(void)
 	scripting_ops = &default_scripting_ops;
 }
 
+static int flush_scripting(void)
+{
+	return scripting_ops->flush_script();
+}
+
 static int cleanup_scripting(void)
 {
 	pr_debug("\nperf script stopped\n");
@@ -1813,6 +1824,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
 
 	err = __cmd_script(&script);
 
+	flush_scripting();
+
 out_delete:
 	perf_session__delete(session);