linux-kernel - Re: [PATCH v2 02/13] selftests: ntsync: Fix build warnings

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Message-ID: <8962735.jnjZ57t7OP@camazotz>
Date: Mon, 08 Dec 2025 13:27:20 -0600
From: Elizabeth Figura <zfigura@...eweavers.com>
To: Shuah Khan <shuah@...nel.org>, Guenter Roeck <linux@...ck-us.net>
Cc: Jakub Kicinski <kuba@...nel.org>, Christian Brauner <brauner@...nel.org>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Eric Dumazet <edumazet@...gle.com>, 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: Re: [PATCH v2 02/13] selftests: ntsync: Fix build warnings

On Friday, 5 December 2025 11:09:56 CST Guenter Roeck wrote:
> Fix
> 
> ntsync.c:1286:20: warning: call to undeclared function 'gettid';
> 	ISO C99 and later do not support implicit function declarations
>  1286 |         wait_args.owner = gettid();
>       |                           ^
> ntsync.c:1280:8: warning: unused variable 'index'
>  1280 |         __u32 index, count, i;
>       |               ^~~~~
> ntsync.c:1281:6: warning: 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>
> ---
> v2: Update subject and description to reflect that the patch fixes build
>     warnings 
> 
>  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;
> 

LGTM.

Reviewed-by: Elizabeth Figura <zfigura@...eweavers.com>