diff options
| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2025-11-07 23:35:01 +0900 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2025-11-19 15:55:08 -0700 |
| commit | a1ca238936aee3898216f6f7b2f91771aa858504 (patch) | |
| tree | 827440604fb6e7290b4b678592c1ac488ce6de41 | |
| parent | d9e6269e330392fd75f8d9db268e7e10541a7ba4 (diff) | |
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) <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc | 40 |
1 files changed, 40 insertions, 0 deletions
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 000000000000..c1f1cafa30f3 --- /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[:[<group>/][<event>]] <tracepoint> [<args>]":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 |