On Sat, Nov 28, 2020 at 09:11:57PM +0530, Souptick Joarder wrote:
> Kernel test robot generates below warning ->
>
> >> arch/s390/kernel/vdso64/getcpu.c:8:5: warning: no previous prototype
> >> for function '__s390_vdso_getcpu' [-Wmissing-prototypes]
>int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct
> getcpu_cache *unused)
>^
>arch/s390/kernel/vdso64/getcpu.c:8:1: note: declare 'static' if the
> function is not intended to be used outside of this translation unit
>int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct
> getcpu_cache *unused)
>^
>static
>1 warning generated.
>
> vim +/__s390_vdso_getcpu +8 arch/s390/kernel/vdso64/getcpu.c
>
> 7
>> 8 int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct
>> getcpu_cache *unused)
>
> It is fixed by adding a prototype.
>
> Reported-by: kernel test robot
> Signed-off-by: Souptick Joarder
> ---
> include/linux/getcpu.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/include/linux/getcpu.h b/include/linux/getcpu.h
> index c304dcd..43c9208 100644
> --- a/include/linux/getcpu.h
> +++ b/include/linux/getcpu.h
> @@ -16,4 +16,5 @@ struct getcpu_cache {
> unsigned long blob[128 / sizeof(long)];
> };
>
> +int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache
> *unused);
Sorry, no. We won't add s390 specific prototypes to common code header
files. Anyway, I solved this differently and the "fix" should be in
linux-next soon.
