Re: [PATCH] Dynamic tick, version 050127-1

[Tony Lindgren <tony@atomide.com>]

* Zwane Mwaikambo <zwane@arm.linux.org.uk> [050204 09:31]:
> On Fri, 4 Feb 2005, Tony Lindgren wrote:
> 
> > Yes, it's safer to keep the timer periodic, although it's
> > used for oneshot purposes for the skips. If the timer interrupt
> > got missed for some reason, the system would be able to recover when
> > it's in periodic mode.
> > 
> > And with some timers, we can do the reprogramming faster, as we just
> > need to load the new value.
> > 
> > I could not figure out how to disable the interrupts for PIT
> > when local APIC is used and the ticks to skip is longer than PIT
> > would allow. So I just changed the mode temporarily to disable it.
> >
> > Does anybody know if there's a way to stop PIT interrupts while
> > keeping it in the periodic mode?
> 
> disable_irq(0) ?

Then the problem is that the CPU does not stay in sleep but wakes to
the first PIT interrupt AFAIK.

Tony