linux-kernel - [PATCH 7/7] selftests: vDSO: vdso_config: Avoid -Wunused-variables

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Message-Id: <20250502-selftests-vdso-fixes-v1-7-fb5d640a4f78@linutronix.de>
Date: Fri, 02 May 2025 14:40:19 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, 
 Vincenzo Frascino <vincenzo.frascino@....com>, 
 Shuah Khan <shuah@...nel.org>, "Jason A. Donenfeld" <Jason@...c4.com>
Cc: Shuah Khan <skhan@...uxfoundation.org>, linux-kernel@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, 
 Muhammad Usama Anjum <usama.anjum@...labora.com>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 7/7] selftests: vDSO: vdso_config: Avoid -Wunused-variables

Not all users of this header make use of all its variables.
For example vdso_test_correctness.c does not use "versions":

In file included from vdso_test_correctness.c:22:
vdso_config.h:61:20: warning: ‘versions’ defined but not used [-Wunused-variable]
   61 | static const char *versions[7] = {
      |                    ^~~~~~~~

Avoid those warnings through attribute((unused)).

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 tools/testing/selftests/vDSO/vdso_config.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/vDSO/vdso_config.h b/tools/testing/selftests/vDSO/vdso_config.h
index 722260f9756198956f0dfccced907284b6851e76..5fdd0f36233742bc47ae79f23d2cfae5a0f56dee 100644
--- a/tools/testing/selftests/vDSO/vdso_config.h
+++ b/tools/testing/selftests/vDSO/vdso_config.h
@@ -58,6 +58,7 @@
 #define VDSO_NAMES		1
 #endif

+__attribute__((unused))
 static const char *versions[7] = {
 	"LINUX_2.6",
 	"LINUX_2.6.15",
@@ -68,6 +69,7 @@ static const char *versions[7] = {
 	"LINUX_5.10"
 };

+__attribute__((unused))
 static const char *names[2][7] = {
 	{
 		"__kernel_gettimeofday",

-- 
2.49.0