Messages in this thread |  | | Date | Mon, 20 Jan 2003 20:54:19 +0100 | From | Pavel Machek <> | Subject | Re: Fwd: Re: [PATCH] linux-2.5.54_delay-cleanup_A0 |
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Hi!
> > Well, loop_delay() was big (fatal!) problem -- it can actaully wait > > for *less* time than told to. That happens if notebook boots during > > "battery low" and than goes to AC power. Thinkpad 560X is example of > > such behaviour. Slow (but working!) PIT seems to be only option on > > such machine. > > I need to look more at the cpu_freq code, but I suspect it could it help > solve or lessen the problem (if we can detect the event on those > > older > systems). Regardless, you make a good point, so if I get the time > > I'll
It is possible to lessen the problem by measuring speed and recalibrating if it changes, but due to delay between measuring and recalibrating it is still not 100% reliable.
> look into a real PIT based delay. >
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