linux-kernel - Re: [PATCH 6/6] selftests/kvm: Replace attribute with macro

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Date:   Wed, 30 Aug 2023 15:22:57 +0300 (EEST)
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     "Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>
cc:     Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Reinette Chatre <reinette.chatre@...el.com>,
        "Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>,
        kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] selftests/kvm: Replace attribute with macro

On Mon, 28 Aug 2023, Wieczor-Retman, Maciej wrote:

> The __printf() macro is used in many tools in the linux kernel to
> validate the format specifiers in functions that use printf. Some
> selftests use it without putting it in a macro definition and some tests
> import the kselftests.h header.

"Some" and yet this only converts one? Please be more precise in the 
wording.

> Use __printf() attribute instead of the full attribute since the macro
> is inside kselftests.h and the header is already imported.

IMO, this would be enough:

Use __printf() from kselftests.h instead of the full attribute.

Was there a reason why you didn't convert mm/pkey-helpers.h one?

-- 
 i.


> Signed-off-by: Wieczor-Retman, Maciej <maciej.wieczor-retman@...el.com>
> ---
>  tools/testing/selftests/kvm/include/test_util.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
> index a6e9f215ce70..710a8a78e8ce 100644
> --- a/tools/testing/selftests/kvm/include/test_util.h
> +++ b/tools/testing/selftests/kvm/include/test_util.h
> @@ -33,7 +33,7 @@ static inline int _no_printf(const char *format, ...) { return 0; }
>  #define pr_info(...) _no_printf(__VA_ARGS__)
>  #endif
>  
> -void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
> +void __printf(1, 2) print_skip(const char *fmt, ...);
>  #define __TEST_REQUIRE(f, fmt, ...)				\
>  do {								\
>  	if (!(f))						\
>