Sept. 8, 2014
6:16 p.m.
When a device wakes up, what about the cpu , is it still on idle with cpuidle ? for example how a mouse move trigger the screen to wake up ?
This is a case of system suspend/resume. Your mouse is a wake-up device. It is configured to send wakeup interrupts. It would wake up the cpu first and then the cpu wakes up all the devices.