Re: [PATCH 2/5] slab: Add __alloc_size attributes for better bounds checking

[Matthew Wilcox]

On Tue, Aug 17, 2021 at 10:31:32PM -0700, Joe Perches wrote:
> Lastly __alloc_size should probably be added to checkpatch
> 
> Maybe:
> ---
>  scripts/checkpatch.pl | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 161ce7fe5d1e5..1a166b5cf3447 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -489,7 +489,8 @@ our $Attribute	= qr{
>  			____cacheline_aligned|
>  			____cacheline_aligned_in_smp|
>  			____cacheline_internodealigned_in_smp|
> -			__weak
> +			__weak|
> +			__alloc_size\s*\(\s*\d+\s*(?:,\s*d+\s*){0,5}\)

Should probably be added to kernel-doc as well.  Any other awful regexes
that need to be changed to understand it?  And can we commonise the
regexes that do exist into a perl helper library?