return false;
}
-static struct cgroup_subsys_state *hugetlb_cgroup_create(struct cgroup *cgroup)
+static struct cgroup_subsys_state *hugetlb_cgroup_css_alloc(struct cgroup *cgroup)
{
int idx;
struct cgroup *parent_cgroup;
return &h_cgroup->css;
}
-static void hugetlb_cgroup_destroy(struct cgroup *cgroup)
+static void hugetlb_cgroup_css_free(struct cgroup *cgroup)
{
struct hugetlb_cgroup *h_cgroup;
* Force the hugetlb cgroup to empty the hugetlb resources by moving them to
* the parent cgroup.
*/
-static void hugetlb_cgroup_pre_destroy(struct cgroup *cgroup)
+static void hugetlb_cgroup_css_offline(struct cgroup *cgroup)
{
struct hstate *h;
struct page *page;
return buf;
}
-int __init hugetlb_cgroup_file_init(int idx)
+static void __init __hugetlb_cgroup_file_init(int idx)
{
char buf[32];
struct cftype *cft;
WARN_ON(cgroup_add_cftypes(&hugetlb_subsys, h->cgroup_files));
- return 0;
+ return;
+}
+
+void __init hugetlb_cgroup_file_init(void)
+{
+ struct hstate *h;
+
+ for_each_hstate(h) {
+ /*
+ * Add cgroup control files only if the huge page consists
+ * of more than two normal pages. This is because we use
+ * page[2].lru.next for storing cgroup details.
+ */
+ if (huge_page_order(h) >= HUGETLB_CGROUP_MIN_ORDER)
+ __hugetlb_cgroup_file_init(hstate_index(h));
+ }
}
/*
struct cgroup_subsys hugetlb_subsys = {
.name = "hugetlb",
- .create = hugetlb_cgroup_create,
- .pre_destroy = hugetlb_cgroup_pre_destroy,
- .destroy = hugetlb_cgroup_destroy,
- .subsys_id = hugetlb_subsys_id,
+ .css_alloc = hugetlb_cgroup_css_alloc,
+ .css_offline = hugetlb_cgroup_css_offline,
+ .css_free = hugetlb_cgroup_css_free,
+ .subsys_id = hugetlb_subsys_id,
};