drivers/cpuidle/coupled.c

62  * the waiting loop, in the ready loop, or in the coupled idle state.
91  * @ready_waiting_counts: combined count of cpus  in ready or waiting loops
119  * in use.  This prevents a deadlock where two cpus are waiting for each others
215  * Decrements the ready counter, unless the ready (and thus the waiting) counter
217  * decrements the waiting counter and then re-increments it just before another
263  * cpuidle_coupled_cpus_waiting - check if all cpus in a coupled set are waiting
275  * cpuidle_coupled_no_cpus_waiting - check if no cpus in coupled set are waiting
278  * Returns true if all of the cpus in a coupled set are out of the waiting loop.
321  * cpuidle_coupled_poke - wake up a cpu that may be waiting
324  * Ensures that the target cpu exits it's waiting idle state (if it is in it)
325  * and will see updates to waiting_count before it re-enters it's waiting idle
341  * cpuidle_coupled_poke_others - wake up all other cpus that may be waiting
364  * Returns the number of waiting cpus.
389 	 * Decrementing waiting count can race with incrementing it in  in cpuidle_coupled_set_not_waiting()
404  * Marks this cpu as no longer in the ready and waiting loops.  Decrements
405  * the waiting count first to prevent another cpu looping back in and seeing
406  * this cpu as waiting just before it exits idle.
499 	 * If this is the last cpu to enter the waiting state, poke  in cpuidle_enter_state_coupled()
500 	 * all the other cpus out of their waiting state so they can  in cpuidle_enter_state_coupled()
502 	 * exiting the waiting state due to an interrupt and  in cpuidle_enter_state_coupled()
515 	 * two cpus could arrive at the waiting loop at the same time,  in cpuidle_enter_state_coupled()
557 	 * another cpu leaves idle and decrements the waiting counter.  in cpuidle_enter_state_coupled()
577 	 * cpu saw that all cpus were waiting.  The cpu that reentered idle will  in cpuidle_enter_state_coupled()
605 	 * other cpus will need to spin waiting for the cpu that is processing  in cpuidle_enter_state_coupled()
713 	/* Force all cpus out of the waiting loop. */  in cpuidle_coupled_prevent_idle()