linux-kernel - Re: [PATCH v2.1 09/24] mips/cpu: Expose play

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Message-ID: <ecb9af84-a2a5-1414-13ea-be00e9203da3@linaro.org>
Date:   Thu, 2 Mar 2023 11:54:58 +0100
From:   Philippe Mathieu-Daudé <philmd@...aro.org>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
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Subject: Re: [PATCH v2.1 09/24] mips/cpu: Expose play_dead()'s prototype
 definition

On 1/3/23 19:16, Josh Poimboeuf wrote:

> The latest version of this patch triggered a new kbuild warning which is
> fixed by the below patch.  If there are no objections I'll bundle it in
> with the rest of the set for merging.
> 
> ---8<---
> 
> Subject: [PATCH] mips/smp: Add CONFIG_SMP guard for raw_smp_processor_id()
> Content-type: text/plain
> 
> Without CONFIG_SMP, raw_smp_processor_id() is not expected to be defined
> by the arch.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Link: https://lore.kernel.org/oe-kbuild-all/202302220755.HM8J8GOR-lkp@intel.com/
> Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
> ---
>   arch/mips/include/asm/smp.h | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
> index 4eee29b7845c..cf992b8b1e46 100644
> --- a/arch/mips/include/asm/smp.h
> +++ b/arch/mips/include/asm/smp.h
> @@ -25,6 +25,7 @@ extern cpumask_t cpu_sibling_map[];
>   extern cpumask_t cpu_core_map[];
>   extern cpumask_t cpu_foreign_map[];
>   
> +#ifdef CONFIG_SMP
>   static inline int raw_smp_processor_id(void)
>   {
>   #if defined(__VDSO__)
> @@ -36,6 +37,7 @@ static inline int raw_smp_processor_id(void)
>   #endif
>   }
>   #define raw_smp_processor_id raw_smp_processor_id
> +#endif
>   
>   /* Map from cpu id to sequential logical cpu number.  This will only
>      not be idempotent when cpus failed to come on-line.	*/

Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>