[PATCH v11 16/18] selftests/ftrace: Add a test case for repeating register/unregister fprobe

Masami Hiramatsu (Google)
2024-06-17T01:49:40Z

This test case repeats define and undefine the fprobe dynamic event to
ensure that the fprobe does not cause any issue with such operations.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
.../test.d/dynevent/add_remove_fprobe_repeat.tc | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc
new file mode 100644
index 000000000000..b4ad09237e2a
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc
@@ -0,0 +1,19 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Generic dynamic event - Repeating add/remove fprobe events
+# requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README
+
+echo 0 > events/enable
+echo > dynamic_events
+
+PLACE=$FUNCTION_FORK
+REPEAT_TIMES=64
+
+for i in `seq 1 $REPEAT_TIMES`; do
+ echo "f:myevent $PLACE" >> dynamic_events
+ grep -q myevent dynamic_events
+ test -d events/fprobes/myevent
+ echo > dynamic_events
+done
+
+clear_trace