struct rcu_data *rdp_gp;
struct task_struct *t;
- /*
- * If this isn't a no-CBs CPU or if it already has an rcuo kthread,
- * then nothing to do.
- */
- if (!rcu_is_nocb_cpu(cpu) || rdp->nocb_cb_kthread)
+ /* If there already is an rcuo kthread, then nothing to do. */
+ if (rdp->nocb_cb_kthread)
return;
/* If we didn't spawn the GP kthread first, reorganize! */
*/
static void rcu_spawn_cpu_nocb_kthread(int cpu)
{
- if (rcu_scheduler_fully_active)
+ if (rcu_scheduler_fully_active && rcu_nocb_is_setup)
rcu_spawn_one_nocb_kthread(cpu);
}
* Should the corresponding CPU come online in the future, then
* we will spawn the needed set of rcu_nocb_kthread() kthreads.
*/
- for_each_cpu(cpu, rcu_nocb_mask) {
+ for_each_possible_cpu(cpu) {
rdp = per_cpu_ptr(&rcu_data, cpu);
if (rdp->cpu >= nl) {
/* New GP kthread, set up for CBs & next GP. */
pr_cont(" %d", cpu);
}
rdp->nocb_gp_rdp = rdp_gp;
- list_add_tail(&rdp->nocb_entry_rdp, &rdp_gp->nocb_head_rdp);
+ if (cpumask_test_cpu(cpu, rcu_nocb_mask))
+ list_add_tail(&rdp->nocb_entry_rdp, &rdp_gp->nocb_head_rdp);
}
if (gotnocbs && dump_tree)
pr_cont("%s\n", gotnocbscbs ? "" : " (self only)");