[PATCH] devtools: stop compiler atomics with no C11 equivalent

[Tyler Retzlaff]

adding a few more people to cc for attention

On Mon, Mar 20, 2023 at 09:22:01AM -0700, Tyler Retzlaff wrote:
> Refrain from using compiler __atomic_{add,and,nand,or,sub,xor}_fetch()
> to ease future adoption of C11 standard atomics.
> 
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> ---
>  devtools/checkpatches.sh | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
> index 1dee094..1ed6d51 100755
> --- a/devtools/checkpatches.sh
> +++ b/devtools/checkpatches.sh
> @@ -119,6 +119,14 @@ check_forbidden_additions() { # <patch>
>  		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
>  		"$1" || res=1
>  
> +	# refrain from using compiler __atomic_{add,and,nand,or,sub,xor}_fetch()
> +	awk -v FOLDERS="lib drivers app examples" \
> +		-v EXPRESSIONS="__atomic_(add|and|nand|or|sub|xor)_fetch\\\(" \
> +		-v RET_ON_FAIL=1 \
> +		-v MESSAGE='Using __atomic_{add,and,nand,or,sub,xor}_fetch' \
> +		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
> +		"$1" || res=1
> +
>  	# forbid use of __reserved which is a reserved keyword in Windows system headers
>  	awk -v FOLDERS="lib drivers app examples" \
>  		-v EXPRESSIONS='\\<__reserved\\>' \
> -- 
> 1.8.3.1