[dpdk-dev] [PATCH] eal/windows: ensure all the CPUs in the set are checked

[Dmitry Kozlyuk]

2021-06-24 17:27 (UTC-0700), Narcisa Ana Maria Vasile:
> From: Narcisa Vasile <navasile at microsoft.com>
> 
> Fix count_cpu() to ensure it iterates through all the CPUs in a set.
> count_cpu() iterates through the CPUs in the set 's' and counts the
> selected ones.
> 
> Previously, it was incorrectly using the number of CPUSETS to iterate
> through the CPUs.
>
> Signed-off-by: Narcisa Vasile <navasile at microsoft.com>
> ---
>  lib/eal/windows/include/sched.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/eal/windows/include/sched.h b/lib/eal/windows/include/sched.h
> index ff572b5dcb..bc31cc8465 100644
> --- a/lib/eal/windows/include/sched.h
> +++ b/lib/eal/windows/include/sched.h
> @@ -49,7 +49,7 @@ count_cpu(rte_cpuset_t *s)
>  	unsigned int _i;
>  	int count = 0;
>  
> -	for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++)
> +	for (_i = 0; _i < CPU_SETSIZE; _i++)
>  		if (CPU_ISSET(_i, s) != 0LL)
>  			count++;
>  	return count;

Hi Naty,

Thank you for the fix, but we also need a proper commit message:

https://doc.dpdk.org/guides/contributing/patches.html#commit-messages-body

Specifically, please, describe what was the observable issue (usually first
comes what was wrong, then how it is fixed now) and add "Fixes" tag and Cc.
Also, "number of CPUSETS" sounds unclear, as there's no "CPUSET".
Suggestion: "number of bitset limbs" or maybe if you describe what was
wrong with the result you won't need to describe its reason precisely at all.