59 static struct pids_cgroup *parent_pids(struct pids_cgroup *pids)  in parent_pids()  argument
61 	return css_pids(pids->css.parent);  in parent_pids()
67 	struct pids_cgroup *pids;  in pids_css_alloc()  local
69 	pids = kzalloc(sizeof(struct pids_cgroup), GFP_KERNEL);  in pids_css_alloc()
70 	if (!pids)  in pids_css_alloc()
73 	pids->limit = PIDS_MAX;  in pids_css_alloc()
74 	atomic64_set(&pids->counter, 0);  in pids_css_alloc()
75 	return &pids->css;  in pids_css_alloc()
91 static void pids_cancel(struct pids_cgroup *pids, int num)  in pids_cancel()  argument
97 	WARN_ON_ONCE(atomic64_add_negative(-num, &pids->counter));  in pids_cancel()
105 static void pids_uncharge(struct pids_cgroup *pids, int num)  in pids_uncharge()  argument
109 	for (p = pids; parent_pids(p); p = parent_pids(p))  in pids_uncharge()
122 static void pids_charge(struct pids_cgroup *pids, int num)  in pids_charge()  argument
126 	for (p = pids; parent_pids(p); p = parent_pids(p))  in pids_charge()
139 static int pids_try_charge(struct pids_cgroup *pids, int num)  in pids_try_charge()  argument
143 	for (p = pids; parent_pids(p); p = parent_pids(p)) {  in pids_try_charge()
158 	for (q = pids; q != p; q = parent_pids(q))  in pids_try_charge()
171 		struct pids_cgroup *pids = css_pids(dst_css);  in pids_can_attach()  local
183 		pids_charge(pids, 1);  in pids_can_attach()
196 		struct pids_cgroup *pids = css_pids(dst_css);  in pids_cancel_attach()  local
204 		pids_uncharge(pids, 1);  in pids_cancel_attach()
215 	struct pids_cgroup *pids;  in pids_can_fork()  local
218 	pids = css_pids(css);  in pids_can_fork()
219 	return pids_try_charge(pids, 1);  in pids_can_fork()
225 	struct pids_cgroup *pids;  in pids_cancel_fork()  local
228 	pids = css_pids(css);  in pids_cancel_fork()
229 	pids_uncharge(pids, 1);  in pids_cancel_fork()
234 	struct pids_cgroup *pids = css_pids(task_css(task, pids_cgrp_id));  in pids_free()  local
236 	pids_uncharge(pids, 1);  in pids_free()
243 	struct pids_cgroup *pids = css_pids(css);  in pids_max_write()  local
265 	pids->limit = limit;  in pids_max_write()
272 	struct pids_cgroup *pids = css_pids(css);  in pids_max_show()  local
273 	int64_t limit = pids->limit;  in pids_max_show()
286 	struct pids_cgroup *pids = css_pids(css);  in pids_current_read()  local
288 	return atomic64_read(&pids->counter);  in pids_current_read()