linux-kernel - [PATCH v2 05/12] tracing: Add synth_event_run

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Date:   Fri, 10 Jan 2020 14:35:11 -0600
From:   Tom Zanussi <zanussi@...nel.org>
To:     rostedt@...dmis.org
Cc:     artem.bityutskiy@...ux.intel.com, mhiramat@...nel.org,
        linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org
Subject: [PATCH v2 05/12] tracing: Add synth_event_run_command()

From: Masami Hiramatsu <mhiramat@...nel.org>

This snippet was taken from v4 of Masami's 'tracing/boot: Add
synthetic event support' patch.

>From the original: 'The synthetic node requires "fields" string
arraies, which defines the fields as same as tracing/synth_events
interface.'

synth_event_run_command() provides the means to execute the synthetic
event create command using the synthetic event command string.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
---
 kernel/trace/trace_events_hist.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 8c9894681100..0886ca6da255 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1390,6 +1390,11 @@ static int create_or_delete_synth_event(int argc, char **argv)
 	return ret == -ECANCELED ? -EINVAL : ret;
 }
 
+int synth_event_run_command(const char *command)
+{
+	return trace_run_command(command, create_or_delete_synth_event);
+}
+
 static int synth_event_create(int argc, const char **argv)
 {
 	const char *name = argv[0];
-- 
2.14.1