Hello,

On Sun, Sep 30, 2012 at 05:46:45PM +0530, Viresh Kumar wrote:
> For the scheduler CPU is idle, if all below are true:
> - current task is idle task
> - nr_running == 0
> - wake_list is empty
> 
> And during these conditions, there can be a timer running in background.
> And when we reach its interrupt handler, then also these conditions hold true
> and local cpu is idle.

It isn't about the CPU being actually idle?  Also, if it's only about
timers, shouldn't it be enough to implement it for timer and
delayed_work?

It would be great if you explain what you're trying to achieve how.  I
can't tell what you're aiming for and why that would be beneficial
from these submissions.

Thanks.

-- 
tejun