Re: APM driver patch summary

[Thomas Hood <jdthood@mail.com>]

Thanks.

I have put Andreas's idle patch, Russell King's notification patch,
and a combined patch up at:
   http://panopticon.csustan.edu/thood/apm.html

--
Thomas Hood

On Sat, 2001-12-22 at 09:44, Andreas Steinmetz wrote:
> Hi,
> I merged 2., 3. and 4. (attached) with some modifications.
> 
> 1. There is now a module parameter apm-idle-threshold which allows to override
>    the compiled in idle percentage threshold above which BIOS idle calls are
>    done.
> 
> 2. I modified Andrej's mechanism to detect a defunct BIOS (stating 'does stop
>    CPU' when it actually doesn't) to take into account that there's other
>    interrupts than the timer interrupt that could reactivate the cpu.
>    As there's 16 hardware interrupts on x86 (apm is arch specific anyway) I do
>    use a leaky bucket counter for a maximum of 16 idle rounds until jiffies is
>    increased. When the counter reaches zero it stays at this value and the
>    system idle routine is called. If BIOS idle is a noop then the counter
>    reaches zero fast, thus effectively halting the cpu.
> 
> Andrej, could you please test the patch if it works for your laptop?