Commit d515876e authored by Tejun Heo's avatar Tejun Heo
Browse files

cgroup: relocate cgroup_advance_iter() 



For some reason, cgroup_advance_iter() is standing lonely all away
from its iter comrades.  Relocate it.

This is cosmetic.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarLi Zefan <lizefan@huawei.com>
parent 492eb21b

kernel/cgroup.c

+24 −24
Original line number Diff line number Diff line
@@ -2981,30 +2981,6 @@ int cgroup_task_count(const struct cgroup *cgrp) 
	return count;

}



/*

 * Advance a list_head iterator.  The iterator should be positioned at

 * the start of a css_set

 */

static void cgroup_advance_iter(struct cgroup *cgrp, struct cgroup_iter *it)

{

	struct list_head *l = it->cset_link;

	struct cgrp_cset_link *link;

	struct css_set *cset;



	/* Advance to the next non-empty css_set */

	do {

		l = l->next;

		if (l == &cgrp->cset_links) {

			it->cset_link = NULL;

			return;

		}

		link = list_entry(l, struct cgrp_cset_link, cset_link);

		cset = link->cset;

	} while (list_empty(&cset->tasks));

	it->cset_link = l;

	it->task = cset->tasks.next;

}



/*

 * To reduce the fork() overhead for systems that are not actually

 * using their cgroups capability, we don't maintain the lists running
@@ -3223,6 +3199,30 @@ css_next_descendant_post(struct cgroup_subsys_state *pos, 
}

EXPORT_SYMBOL_GPL(css_next_descendant_post);



/*

 * Advance a list_head iterator.  The iterator should be positioned at

 * the start of a css_set

 */

static void cgroup_advance_iter(struct cgroup *cgrp, struct cgroup_iter *it)

{

	struct list_head *l = it->cset_link;

	struct cgrp_cset_link *link;

	struct css_set *cset;



	/* Advance to the next non-empty css_set */

	do {

		l = l->next;

		if (l == &cgrp->cset_links) {

			it->cset_link = NULL;

			return;

		}

		link = list_entry(l, struct cgrp_cset_link, cset_link);

		cset = link->cset;

	} while (list_empty(&cset->tasks));

	it->cset_link = l;

	it->task = cset->tasks.next;

}



void cgroup_iter_start(struct cgroup *cgrp, struct cgroup_iter *it)

	__acquires(css_set_lock)

{