From: Jaewon Jung <jaewon8868@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Shuah Khan <shuah@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: [PATCH] selftests/ftrace: Check for dynamic_events before clearing
Date: Fri, 16 Oct 2026 12:26:32 +0900 [thread overview]
Message-ID: <20261016032655.82009-1-jaewon8868@gmail.com> (raw)
Trace instances do not have a dynamic_events file, but
clear_dynamic_events() is called during initialization. Check for the
file to avoid a "No such file or directory" error.
Signed-off-by: Jaewon Jung <jaewon8868@gmail.com>
---
tools/testing/selftests/ftrace/test.d/functions | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions
index 826141e299e5..4f2abb05e365 100644
--- a/tools/testing/selftests/ftrace/test.d/functions
+++ b/tools/testing/selftests/ftrace/test.d/functions
@@ -84,6 +84,8 @@ clear_synthetic_events() { # reset all current synthetic events
}
clear_dynamic_events() { # reset all current dynamic events
+ [ -f dynamic_events ] || return 0
+
again=1
stop=1
# loop mulitple times as some events require other to be removed first
--
2.43.0
reply other threads:[~2026-10-16 3:27 UTC|newest]
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