On 1 October 2012 05:47, Viresh Kumar wrote:
> On 1 October 2012 06:02, Tejun Heo wrote:
>> It isn't about the CPU being actually idle?
>
> No. Being idle only from scheduler's perspective. :)
>
>> Also, if it's only about timers, shouldn't it be enough to implement
>> it for timer and delayed_wo
On 1 October 2012 06:02, Tejun Heo wrote:
> It isn't about the CPU being actually idle?
No. Being idle only from scheduler's perspective. :)
> Also, if it's only about timers, shouldn't it be enough to implement
> it for timer and delayed_work?
What if we need a timer, which must re-arm itself
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 it
On 30 September 2012 14:24, Tejun Heo wrote:
> On Thu, Sep 27, 2012 at 02:34:05PM +0530, Viresh Kumar wrote:
>> - A cpu has programmed a timer and is IDLE now.
>> - CPU gets into interrupt handler due to timer and queues a work. As the CPU
>> is
>> currently IDLE, we can queue this work to some
Hello, Viresh.
On Thu, Sep 27, 2012 at 02:34:05PM +0530, Viresh Kumar wrote:
> - A cpu has programmed a timer and is IDLE now.
> - CPU gets into interrupt handler due to timer and queues a work. As the CPU
> is
> currently IDLE, we can queue this work to some other CPU.
I'm still a bit confuse
On 27 September 2012 14:34, Viresh Kumar wrote:
> Workqueues queues work on current cpu, if the caller haven't passed a
> preferred
> cpu. This may wake up an idle CPU, which is actually not required.
>
> This work can be processed by any CPU and so we must select a non-idle CPU
> here.
> This p
Workqueues queues work on current cpu, if the caller haven't passed a preferred
cpu. This may wake up an idle CPU, which is actually not required.
This work can be processed by any CPU and so we must select a non-idle CPU here.
This patch adds in support in workqueue framework to get preferred CPU
