-/* Called by cgroups to determine if a cpuset is usable; cgroup_mutex held */
-static int cpuset_can_attach(struct cgroup_subsys *ss, struct cgroup *cont,
- struct task_struct *tsk)
-{
- struct cpuset *cs = cgroup_cs(cont);
-
- if (cpumask_empty(cs->cpus_allowed) || nodes_empty(cs->mems_allowed))
- return -ENOSPC;
-
- /*
- * Kthreads bound to specific cpus cannot be moved to a new cpuset; we
- * cannot change their cpu affinity and isolating such threads by their
- * set of allowed nodes is unnecessary. Thus, cpusets are not
- * applicable for such threads. This prevents checking for success of
- * set_cpus_allowed_ptr() on all attached tasks before cpus_allowed may
- * be changed.
- */
- if (tsk->flags & PF_THREAD_BOUND)
- return -EINVAL;
-
- return 0;
-}
-
-static int cpuset_can_attach_task(struct cgroup *cgrp, struct task_struct *task)
-{
- return security_task_setscheduler(task);
-}
-