From a1ca238936aee3898216f6f7b2f91771aa858504 Mon Sep 17 00:00:00 2001 From: "Masami Hiramatsu (Google)" Date: Fri, 7 Nov 2025 23:35:01 +0900 Subject: [PATCH] selftests: tracing: Add tprobe enable/disable testcase Commit 2867495dea86 ("tracing: tprobe-events: Register tracepoint when enable tprobe event") caused regression bug and tprobe did not work. To prevent similar problems, add a testcase which enables/disables a tprobe and check the results. Link: https://lore.kernel.org/r/176252610176.214996.3978515319000806265.stgit@devnote2 Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Shuah Khan --- .../test.d/dynevent/enable_disable_tprobe.tc | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc new file mode 100644 index 0000000000000..c1f1cafa30f35 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc @@ -0,0 +1,40 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - enable/disable tracepoint probe events +# requires: dynamic_events "t[:[/][]] []":README + +echo 0 > events/enable +echo > dynamic_events + +TRACEPOINT=sched_switch +ENABLEFILE=events/tracepoints/myprobe/enable + +:;: "Add tracepoint event on $TRACEPOINT" ;: + +echo "t:myprobe ${TRACEPOINT}" >> dynamic_events + +:;: "Check enable/disable to ensure it works" ;: + +echo 1 > $ENABLEFILE + +grep -q $TRACEPOINT trace + +echo 0 > $ENABLEFILE + +echo > trace + +! grep -q $TRACEPOINT trace + +:;: "Repeat enable/disable to ensure it works" ;: + +echo 1 > $ENABLEFILE + +grep -q $TRACEPOINT trace + +echo 0 > $ENABLEFILE + +echo > trace + +! grep -q $TRACEPOINT trace + +exit 0 -- 2.47.3