linux-kernel - Re: [PATCH v3 1/2] selftests/vDSO: Fix building errors on LoongArch

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Message-ID: <b9bfa260-779a-493c-814e-13295203a5c4@collabora.com>
Date: Sat, 30 Dec 2023 11:56:45 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Tiezhu Yang <yangtiezhu@...ngson.cn>, Shuah Khan <shuah@...nel.org>,
 Shuah Khan <skhan@...uxfoundation.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 linux-kselftest@...r.kernel.org, loongarch@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] selftests/vDSO: Fix building errors on LoongArch

On 12/13/23 6:22 AM, Tiezhu Yang wrote:
> There exist the following errors when build vDSO selftests on LoongArch:
> 
>   # make headers && cd tools/testing/selftests/vDSO && make
>   ...
>   error: 'VDSO_VERSION' undeclared (first use in this function)
>   ...
>   error: 'VDSO_NAMES' undeclared (first use in this function)
> 
> We can see the following code in arch/loongarch/vdso/vdso.lds.S:
> 
> VERSION
> {
>         LINUX_5.10 {
>         global:
>                 __vdso_getcpu;
>                 __vdso_clock_getres;
>                 __vdso_clock_gettime;
>                 __vdso_gettimeofday;
>                 __vdso_rt_sigreturn;
>         local: *;
>         };
> }
> 
> so VDSO_VERSION should be 6 and VDSO_NAMES should be 1 for LoongArch,
> add them to fix the building errors on LoongArch.
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@...labora.com>

> ---
>  tools/testing/selftests/vDSO/vdso_config.h | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/vDSO/vdso_config.h b/tools/testing/selftests/vDSO/vdso_config.h
> index cdfed403ba13..7b543e7f04d7 100644
> --- a/tools/testing/selftests/vDSO/vdso_config.h
> +++ b/tools/testing/selftests/vDSO/vdso_config.h
> @@ -53,15 +53,19 @@
>  #if __riscv_xlen == 32
>  #define VDSO_32BIT		1
>  #endif
> +#elif defined(__loongarch__)
> +#define VDSO_VERSION		6
> +#define VDSO_NAMES		1
>  #endif
>  
> -static const char *versions[6] = {
> +static const char *versions[7] = {
>  	"LINUX_2.6",
>  	"LINUX_2.6.15",
>  	"LINUX_2.6.29",
>  	"LINUX_2.6.39",
>  	"LINUX_4",
>  	"LINUX_4.15",
> +	"LINUX_5.10"
>  };
>  
>  static const char *names[2][6] = {

-- 
BR,
Muhammad Usama Anjum