linux-kernel - [PATCH 2/2] selftests: tracing: Use mutex

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Message-ID:  <175151680309.2149615.9795104805153538717.stgit@mhiramat.tok.corp.google.com>
Date: Thu,  3 Jul 2025 13:26:43 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>,
	Shuah Khan <shuah@...nel.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH 2/2] selftests: tracing: Use mutex_unlock for testing glob filter

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

Since commit c5b6ababd21a ("locking/mutex: implement
mutex_trylock_nested") makes mutex_trylock() as an inlined
function if CONFIG_DEBUG_LOCK_ALLOC=y, we can not use
mutex_trylock() for testing the glob filter of ftrace.

Use mutex_unlock instead.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 .../ftrace/test.d/ftrace/func-filter-glob.tc       |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
index 4b994b6df5ac..ed81eaf2afd6 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
@@ -29,7 +29,7 @@ ftrace_filter_check 'schedule*' '^schedule.*$'
 ftrace_filter_check '*pin*lock' '.*pin.*lock$'
 
 # filter by start*mid*
-ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
+ftrace_filter_check 'mutex*unl*' '^mutex.*unl.*'
 
 # Advanced full-glob matching feature is recently supported.
 # Skip the tests if we are sure the kernel does not support it.