drivers/cpuidle/coupled.c

3  * coupled.c - helper functions to enter the same idle state on multiple cpus
28  * around).  Each cpu has a power state that it can enter without
36  * WFI state until all cpus are ready to enter a coupled state, at
40  * Once all cpus are ready to enter idle, they are woken by an smp
42  * cpus will find work to do, and choose not to enter idle.  A
44  * power state enter function at the same time.  During this pass,
79  *    Provide a struct cpuidle_state.enter function for each state
145  * (state.enter when state.flags has CPUIDLE_FLAG_COUPLED set).
291  * Returns the deepest idle state that all coupled cpus can enter
447  * cpuidle_enter_state_coupled - attempt to enter a state with coupled cpus
452  * Coordinate with coupled cpus to enter the target state.  This is a two
494 	 * If this is the last cpu to enter the waiting state, poke  in cpuidle_enter_state_coupled()
496 	 * enter a deeper state.  This can race with one of the cpus  in cpuidle_enter_state_coupled()
599 	 * exiting the idle enter function and decrementing ready_count.  All  in cpuidle_enter_state_coupled()
715  * cpuidle_coupled_allow_idle - allows cpus to enter a coupled state