Architecture specific implementations for tickless kernel and deferrable timers

[Thomas Gleixner]

On Wed, 27 Apr 2011, Vikram Narayanan wrote:
> On Wed, Apr 27, 2011 at 2:07 AM, Russell King - ARM Linux
> > The only way to have a stable time source is to have a stable clocksource
> > - one which is never stopped or otherwise messed around with.  If you
> > try to combine clocksource and clockevent with one-shot mode, where
> > the clocksource part is reset each time a new event is set, you'll probably
> > soon end up with time going screwy.
> >
> Thanks for the insight.
> My another question is that, where can I find some examples of dynamic
> tick implementation. Are there any documents for implementing the
> functionality?
> Also the struct dyn_tick_timer in the file include/asm-arm/mach/time.h
> is removed since 2.6.27. So how do I achieve this?
> If you refer me to some documentation on this, that would be great.

Provide a functional clocksource plus a clockevent device which is
oneshot capable. Enable CONFIG_NOHZ and there you go.

Thanks,

	tglx