linux-kernel - [PATCH 5/5] rtla/timerlat_top: Abort event processing on second signal

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Message-ID: <20250116144931.649593-6-tglozar@redhat.com>
Date: Thu, 16 Jan 2025 15:49:31 +0100
From: Tomas Glozar <tglozar@...hat.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-trace-kernel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	John Kacur <jkacur@...hat.com>,
	Luis Goncalves <lgoncalv@...hat.com>,
	Gabriele Monaco <gmonaco@...hat.com>,
	Tomas Glozar <tglozar@...hat.com>
Subject: [PATCH 5/5] rtla/timerlat_top: Abort event processing on second signal

Apply the changes from the previous patch also to timerlat-top.

Signed-off-by: Tomas Glozar <tglozar@...hat.com>
---
 tools/tracing/rtla/src/timerlat_top.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index d21a21053917..d358cd39f360 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -903,6 +903,14 @@ static int stop_tracing;
 static struct trace_instance *top_inst = NULL;
 static void stop_top(int sig)
 {
+	if (stop_tracing) {
+		/*
+		 * Stop requested twice in a row; abort event processing and
+		 * exit immediately
+		 */
+		tracefs_iterate_stop(top_inst->inst);
+		return;
+	}
 	stop_tracing = 1;
 	if (top_inst)
 		trace_instance_stop(top_inst);
-- 
2.47.1