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Message-ID: <20241227151403.297285195@goodmis.org>
Date: Fri, 27 Dec 2024 10:13:51 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Alexei Starovoitov <alexei.starovoitov@...il.com>,
 Florent Revest <revest@...omium.org>,
 Martin KaFai Lau <martin.lau@...ux.dev>,
 bpf <bpf@...r.kernel.org>,
 Alexei Starovoitov <ast@...nel.org>,
 Jiri Olsa <jolsa@...nel.org>,
 Alan Maguire <alan.maguire@...cle.com>
Subject: [for-next][PATCH 16/18] selftests/ftrace: Add a test case for repeating register/unregister
 fprobe

From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>

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

Cc: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: Florent Revest <revest@...omium.org>
Cc: Martin KaFai Lau <martin.lau@...ux.dev>
Cc: bpf <bpf@...r.kernel.org>
Cc: Alexei Starovoitov <ast@...nel.org>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Alan Maguire <alan.maguire@...cle.com>
Cc: Mark Rutland <mark.rutland@....com>
Link: https://lore.kernel.org/173519009398.391279.4625924605120064761.stgit@devnote2
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 .../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
-- 
2.45.2



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