3  * Generic entry points for the idle threads and
4  * implementation of the idle task scheduling class.
14  * sched_idle_set_state - Record idle state for the current CPU.
82  * default_idle_call - Default CPU idle routine.
141 	 * The idle task must be scheduled, it is pointless to go to idle, just  in call_cpuidle()
142 	 * update no idle residency and return.  in call_cpuidle()
151 	 * Enter the idle state previously returned by the governor decision.  in call_cpuidle()
159  * cpuidle_idle_call - the main idle function
174 	 * Check if the idle task must be rescheduled. If it is the  in cpuidle_idle_call()
183 	 * The RCU framework needs to be told that we are entering an idle  in cpuidle_idle_call()
196 	 * Suspend-to-idle ("s2idle") is a system state in which all user space  in cpuidle_idle_call()
199 	 * the cpuidle governor and go straight for the deepest idle state  in cpuidle_idle_call()
201 	 * timekeeping to prevent timer interrupts from kicking us out of idle  in cpuidle_idle_call()
227 		 * Ask the cpuidle framework to choose a convenient idle state.  in cpuidle_idle_call()
247 	 * It is up to the idle functions to reenable local interrupts  in cpuidle_idle_call()
254  * Generic idle loop implementation
271 	 * rq->idle). This means that, if rq->idle has the polling bit set,  in do_idle()
295 		 * detected in the wakeup from idle path that the tick  in do_idle()
297 		 * idle as we know that the IPI is going to arrive right away.  in do_idle()
312 	 * This is required because for polling idle loops we will not have had  in do_idle()
404  * idle-task scheduling class.
411 	return task_cpu(p); /* IDLE tasks as never migrated */  in select_task_rq_idle()
422  * Idle tasks are unconditionally rescheduled:
442 	return rq->idle;  in pick_task_idle()
448 	struct task_struct *next = rq->idle;  in pick_next_task_idle()
456  * It is not legal to sleep in the idle task - print a warning
463 	printk(KERN_ERR "bad: scheduling from the idle thread!\n");  in dequeue_task_idle()
496  * Simple, special scheduling class for the per-CPU idle tasks:
498 DEFINE_SCHED_CLASS(idle) = {
500 	/* no enqueue/yield_task for idle tasks */