Re: [PATCH] proc: centralise declaration of cpuinfo_op

[Christoph Hellwig]

On Wed, Oct 09, 2019 at 12:39:30PM +0100, Ben Dooks wrote:
> When building for arm, cpuinfo_op generates a warning due
> to no declaration. Since this is used in fs/proc/cpuinfo.c
> and inconsitently declared across archiectures move the
> declaration info <linux/seq_file.h>. This means that the
> cpuinfo_op will have a declaration any place it is used.
> 
> Removes the following sparse warning:
> 
> arch/arm/kernel/setup.c:1320:29: warning: symbol 'cpuinfo_op' was not declared. Should it be static?

I like the consolidation, but I don't think seq_file.h is the right
place.  A procfs or cpu topology related header seems like the better
choice.