2  * cpuidle.h - a generic framework for CPU idle power management
42 	unsigned long long	rejected; /* Number of times idle entry was rejected */
50 	char		name[CPUIDLE_NAME_LEN];  member
67 	 * CPUs execute ->enter_s2idle with the local tick or entire timekeeping
68 	 * suspended, so it must not re-enable interrupts at any point (even
71 	 * This callback may point to the same function as ->enter if all of
79 /* Idle State Flags */
81 #define CPUIDLE_FLAG_POLLING		BIT(0) /* polling state */
82 #define CPUIDLE_FLAG_COUPLED		BIT(1) /* state applies to multiple cpus */
83 #define CPUIDLE_FLAG_TIMER_STOP 	BIT(2) /* timer is stopped on this state */
84 #define CPUIDLE_FLAG_UNUSABLE		BIT(3) /* avoid using this state */
85 #define CPUIDLE_FLAG_OFF		BIT(4) /* disable this state by default */
86 #define CPUIDLE_FLAG_TLB_FLUSHED	BIT(5) /* idle-state flushes TLBs */
87 #define CPUIDLE_FLAG_RCU_IDLE		BIT(6) /* idle-state takes care of RCU */
123 	 * Idle is allowed to (temporary) enable IRQs. It  in ct_cpuidle_enter()
128 	 * ct_idle_enter() relies on lockdep IRQ state, so switch that  in ct_cpuidle_enter()
129 	 * last -- this is very similar to the entry code.  in ct_cpuidle_enter()
153 	const char		*name;  member
212 {return -ENODEV; }  in cpuidle_select()
215 {return -ENODEV; }  in cpuidle_enter()
221 {return -ENODEV; }  in cpuidle_register_driver()
227 {return -ENODEV; }  in cpuidle_register_device()
231 {return -ENODEV; }  in cpuidle_register()
238 {return -ENODEV; }  in cpuidle_enable_device()
240 static inline int cpuidle_play_dead(void) {return -ENODEV; }  in cpuidle_play_dead()
257 {return -ENODEV; }  in cpuidle_find_deepest_state()
260 {return -ENODEV; }  in cpuidle_enter_s2idle()
266 /* kernel/sched/idle.c */
289 	char			name[CPUIDLE_NAME_LEN];  member
309 				state,					\  argument
324 		__ret = low_level_idle_enter(state);			\
331 	__ret ? -1 : idx;						\
340 #define CPU_PM_CPU_IDLE_ENTER_PARAM(low_level_idle_enter, idx, state)	\  argument
341 	__CPU_PM_CPU_IDLE_ENTER(low_level_idle_enter, idx, state, 0, 0)
343 #define CPU_PM_CPU_IDLE_ENTER_PARAM_RCU(low_level_idle_enter, idx, state)	\  argument
344 	__CPU_PM_CPU_IDLE_ENTER(low_level_idle_enter, idx, state, 0, 1)
346 #define CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(low_level_idle_enter, idx, state)	\  argument
347 	__CPU_PM_CPU_IDLE_ENTER(low_level_idle_enter, idx, state, 1, 0)
349 #define CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM_RCU(low_level_idle_enter, idx, state)	\  argument
350 	__CPU_PM_CPU_IDLE_ENTER(low_level_idle_enter, idx, state, 1, 1)