On Fri, Apr 11, 2014 at 03:24:11PM +0530, Viresh Kumar wrote:
> On 10 April 2014 20:26, Frederic Weisbecker wrote:
> > When a dynticks idle CPU is woken up (typically with an IPI),
> > tick_nohz_stop_idle()
> > is called on interrupt entry but, because this is a waking up IPI,
> > tick_nohz_star
On 10 April 2014 20:26, Frederic Weisbecker wrote:
> When a dynticks idle CPU is woken up (typically with an IPI),
> tick_nohz_stop_idle()
> is called on interrupt entry but, because this is a waking up IPI,
> tick_nohz_start_idle()
> won't be called. The reason is that need_resched() prevents
On Wed, Apr 09, 2014 at 05:28:57PM +0530, Viresh Kumar wrote:
> Hi Guys,
>
> File: kernel/time/tick-sched.c
> function: tick_nohz_idle_exit()
>
> We are checking here if idle_active is true or not and then
> do some stuff. But is it possible that idle_active be false
> here?
>
> The sequence as
Hi Guys,
File: kernel/time/tick-sched.c
function: tick_nohz_idle_exit()
We are checking here if idle_active is true or not and then
do some stuff. But is it possible that idle_active be false
here?
The sequence as far as I understood is:
idle-loop:
tick_nohz_idle_enter(), i.e. idle_active = tru
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