linux-kernel - [PATCH 02/13] selftests: ntsync: Fix build errors -seen with -Werror

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Message-ID: <20251204161729.2448052-3-linux@roeck-us.net>
Date: Thu,  4 Dec 2025 08:17:16 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Shuah Khan <shuah@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
	Elizabeth Figura <zfigura@...eweavers.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Kees Cook <kees@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	wine-devel@...ehq.org,
	netdev@...r.kernel.org,
	bpf@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 02/13] selftests: ntsync: Fix build errors -seen with -Werror

Fix

ntsync.c:1286:20: error: call to undeclared function 'gettid';
	ISO C99 and later do not support implicit function declarations
 1286 |         wait_args.owner = gettid();
      |                           ^
ntsync.c:1280:8: error: unused variable 'index'
 1280 |         __u32 index, count, i;
      |               ^~~~~
ntsync.c:1281:6: error: unused variable 'ret'
 1281 |         int ret;

by adding the missing include file and removing the unused variables.

Fixes: a22860e57b54 ("selftests: ntsync: Add a stress test for contended waits.")
Cc: Elizabeth Figura <zfigura@...eweavers.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 tools/testing/selftests/drivers/ntsync/ntsync.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 3aad311574c4..d3df94047e4d 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -11,6 +11,7 @@
 #include <fcntl.h>
 #include <time.h>
 #include <pthread.h>
+#include <unistd.h>
 #include <linux/ntsync.h>
 #include "../../kselftest_harness.h"
 
@@ -1277,8 +1278,7 @@ static int stress_device, stress_start_event, stress_mutex;
 static void *stress_thread(void *arg)
 {
 	struct ntsync_wait_args wait_args = {0};
-	__u32 index, count, i;
-	int ret;
+	__u32 count, i;
 
 	wait_args.timeout = UINT64_MAX;
 	wait_args.count = 1;
-- 
2.43.0