Re: [PATCH] cpuset: Add comments for update_domain_attr_tree

[Lai Jiangshan <laijs@cn.fujitsu.com>]

This patch was reviewed by Li Zefan and was revised on his suggestion before sent.
Thanks Li Zefan.

Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>

Lai Jiangshan wrote:
> Add comments for update_domain_attr_tree().
> 
> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
> ---
> diff --git a/kernel/cpuset.c b/kernel/cpuset.c
> index adf66c0..fed1f42 100644
> --- a/kernel/cpuset.c
> +++ b/kernel/cpuset.c
> @@ -487,15 +487,21 @@ update_domain_attr(struct sched_domain_attr *dattr, struct cpuset *c)
>  {
>  	if (dattr->relax_domain_level < c->relax_domain_level)
>  		dattr->relax_domain_level = c->relax_domain_level;
> -	return;
>  }
>  
> +/*
> + * Helper routine for rebuild_sched_domains().
> + * Walk the specified cpuset subtree and update @dattr with the
> + * largest relax_domain_level.
> + *
> + * Called with cgroup_mutex held.
> + */
>  static void
> -update_domain_attr_tree(struct sched_domain_attr *dattr, struct cpuset *c)
> +update_domain_attr_tree(struct sched_domain_attr *dattr, struct cpuset *root)
>  {
>  	LIST_HEAD(q);
>  
> -	list_add(&c->stack_list, &q);
> +	list_add(&root->stack_list, &q);
>  	while (!list_empty(&q)) {
>  		struct cpuset *cp;
>  		struct cgroup *cont;
> 
> 
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> 
> 


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