Messages in this thread | | | Date | Fri, 4 Feb 2005 09:42:55 -0800 | From | Tony Lindgren <> | Subject | Re: [PATCH] Dynamic tick, version 050127-1 |
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* 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.
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