3  * Generic entry points for the idle threads and
4  * implementation of the idle task scheduling class.
17  * sched_idle_set_state - Record idle state for the current CPU.
84  * default_idle_call - Default CPU idle routine.
103 	 * The idle task must be scheduled, it is pointless to go to idle, just  in call_cpuidle()
104 	 * update no idle residency and return.  in call_cpuidle()
113 	 * Enter the idle state previously returned by the governor decision.  in call_cpuidle()
121  * cpuidle_idle_call - the main idle function
136 	 * Check if the idle task must be rescheduled. If it is the  in cpuidle_idle_call()
145 	 * The RCU framework needs to be told that we are entering an idle  in cpuidle_idle_call()
159 	 * Suspend-to-idle ("s2idle") is a system state in which all user space  in cpuidle_idle_call()
162 	 * the cpuidle governor and go stratight for the deepest idle state  in cpuidle_idle_call()
164 	 * timekeeping to prevent timer interrupts from kicking us out of idle  in cpuidle_idle_call()
190 		 * Ask the cpuidle framework to choose a convenient idle state.  in cpuidle_idle_call()
212 	 * It is up to the idle functions to reenable local interrupts  in cpuidle_idle_call()
221  * Generic idle loop implementation
232 	 * rq->idle). This means that, if rq->idle has the polling bit set,  in do_idle()
255 		 * detected in the wakeup from idle path that the tick  in do_idle()
257 		 * idle as we know that the IPI is going to arrive right away.  in do_idle()
272 	 * This is required because for polling idle loops we will not have had  in do_idle()
359  * idle-task scheduling class.
366 	return task_cpu(p); /* IDLE tasks as never migrated */  in select_task_rq_idle()
377  * Idle tasks are unconditionally rescheduled:
397 	struct task_struct *next = rq->idle;  in pick_next_task_idle()
408  * It is not legal to sleep in the idle task - print a warning
415 	printk(KERN_ERR "bad: scheduling from the idle thread!\n");  in dequeue_task_idle()
453  * Simple, special scheduling class for the per-CPU idle tasks:
457 	/* no enqueue/yield_task for idle tasks */