[tip:perf/urgent] perf script: Add scripting operation process_switch()

[tip-bot for Adrian Hunter]

Commit-ID:  5bf83c29a0ad2e78683c318b607539dbadbf7a3b
Gitweb:     https://git.kernel.org/tip/5bf83c29a0ad2e78683c318b607539dbadbf7a3b
Author:     Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Wed, 10 Jul 2019 11:58:06 +0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 10 Jul 2019 12:34:09 -0300

perf script: Add scripting operation process_switch()

Add scripting operation process_switch() to process switch events.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20190710085810.1650-18-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-script.c   | 8 +++++++-
 tools/perf/util/trace-event.h | 3 +++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 79367087bd18..8f24865596af 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2289,6 +2289,12 @@ static int process_switch_event(struct perf_tool *tool,
 	if (perf_event__process_switch(tool, event, sample, machine) < 0)
 		return -1;
 
+	if (scripting_ops && scripting_ops->process_switch)
+		scripting_ops->process_switch(event, sample, machine);
+
+	if (!script->show_switch_events)
+		return 0;
+
 	thread = machine__findnew_thread(machine, sample->pid,
 					 sample->tid);
 	if (thread == NULL) {
@@ -2467,7 +2473,7 @@ static int __cmd_script(struct perf_script *script)
 		script->tool.mmap = process_mmap_event;
 		script->tool.mmap2 = process_mmap2_event;
 	}
-	if (script->show_switch_events)
+	if (script->show_switch_events || (scripting_ops && scripting_ops->process_switch))
 		script->tool.context_switch = process_switch_event;
 	if (script->show_namespace_events)
 		script->tool.namespaces = process_namespaces_event;
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index d9b0a942090a..c7002fe11673 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -81,6 +81,9 @@ struct scripting_ops {
 			       struct perf_sample *sample,
 			       struct perf_evsel *evsel,
 			       struct addr_location *al);
+	void (*process_switch)(union perf_event *event,
+			       struct perf_sample *sample,
+			       struct machine *machine);
 	void (*process_stat)(struct perf_stat_config *config,
 			     struct perf_evsel *evsel, u64 tstamp);
 	void (*process_stat_interval)(u64 tstamp);