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SubjectRe: [PATCH 02/11] sched: remove rq->cpu_load[load_idx] array
On 02/26/2014 12:22 AM, Srikar Dronamraju wrote:
>>
>> -/**
>> - * get_sd_load_idx - Obtain the load index for a given sched domain.
>> - * @sd: The sched_domain whose load_idx is to be obtained.
>> - * @idle: The idle status of the CPU for whose sd load_idx is obtained.
>> - *
>> - * Return: The load index.
>> - */
>> -static inline int get_sd_load_idx(struct sched_domain *sd,
>> - enum cpu_idle_type idle)
>> -{
>> - int load_idx;
>> -
>> - switch (idle) {
>> - case CPU_NOT_IDLE:
>> - load_idx = sd->busy_idx;
>> - break;
>> -
>> - case CPU_NEWLY_IDLE:
>> - load_idx = sd->newidle_idx;
>> - break;
>> - default:
>> - load_idx = sd->idle_idx;
>> - break;
>> - }
>> -
>> - return load_idx;
>> -}
>> -
>
> Since the last caller to get_sd_load_idx(), does it make sense to remove
> the function definition for get_sd_load_idx() in the previous patch itself?

yes. it's reasonable.
>
> Or
>
>> @@ -5903,13 +5868,11 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd
>> struct sched_domain *child = env->sd->child;
>> struct sched_group *sg = env->sd->groups;
>> struct sg_lb_stats tmp_sgs;
>> - int load_idx, prefer_sibling = 0;
>> + int prefer_sibling = 0;
>>
>> if (child && child->flags & SD_PREFER_SIBLING)
>> prefer_sibling = 1;
>>
>> - load_idx = 0;
>> -
>> do {
>> struct sg_lb_stats *sgs = &tmp_sgs;
>> int local_group;
>
>
> The single line change in the previous patch gets removed here so why
> not club them.

Uh, the first patch want to just show the load_idx connection in current
logical.

Yes, we can club them, but this connection will be flooded in code.



--
Thanks
Alex


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