Re: [PATCH 11/12] sched: use for_each_if in topology.h

[Peter Zijlstra]

On Mon, Jul 09, 2018 at 10:36:49AM +0200, Daniel Vetter wrote:
> Avoids complaints from gcc about ambiguous else clauses.

Is that a new thing? I'm fairly sure I've never seen it do that,

> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> ---
>  include/linux/topology.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/topology.h b/include/linux/topology.h
> index cb0775e1ee4b..4fba5a5b148d 100644
> --- a/include/linux/topology.h
> +++ b/include/linux/topology.h
> @@ -40,7 +40,7 @@
>  
>  #define for_each_node_with_cpus(node)			\
>  	for_each_online_node(node)			\
> -		if (nr_cpus_node(node))
> +		for_each_if (nr_cpus_node(node))

Not having gotten any of the other patches, I'm not really sure what
this does and such, but improve readability it does not :/