-/*
- * For a given cpuset cur, partition the system as follows
- * a. All cpus in the parent cpuset's cpus_allowed that are not part of any
- * exclusive child cpusets
- * b. All cpus in the current cpuset's cpus_allowed that are not part of any
- * exclusive child cpusets
- * Build these two partitions by calling partition_sched_domains
- *
- * Call with manage_mutex held. May nest a call to the
- * lock_cpu_hotplug()/unlock_cpu_hotplug() pair.
- * Must not be called holding callback_mutex, because we must
- * not call lock_cpu_hotplug() while holding callback_mutex.
- */
-
-static void update_cpu_domains(struct cpuset *cur)
-{
- struct cpuset *c, *par = cur->parent;
- cpumask_t pspan, cspan;
-
- if (par == NULL || cpus_empty(cur->cpus_allowed))
- return;
-
- /*
- * Get all cpus from parent's cpus_allowed not part of exclusive
- * children
- */
- pspan = par->cpus_allowed;
- list_for_each_entry(c, &par->children, sibling) {
- if (is_cpu_exclusive(c))
- cpus_andnot(pspan, pspan, c->cpus_allowed);
- }
- if (!is_cpu_exclusive(cur)) {
- cpus_or(pspan, pspan, cur->cpus_allowed);
- if (cpus_equal(pspan, cur->cpus_allowed))
- return;
- cspan = CPU_MASK_NONE;
- } else {
- if (cpus_empty(pspan))
- return;
- cspan = cur->cpus_allowed;
- /*
- * Get all cpus from current cpuset's cpus_allowed not part
- * of exclusive children
- */
- list_for_each_entry(c, &cur->children, sibling) {
- if (is_cpu_exclusive(c))
- cpus_andnot(cspan, cspan, c->cpus_allowed);
- }
- }
-
- lock_cpu_hotplug();
- partition_sched_domains(&pspan, &cspan);
- unlock_cpu_hotplug();
-}
-