zeroing pages in the idle task?

[Geert Uytterhoeven]

On Thu, 14 Sep 2000, Takashi Oe wrote:
> On Wed, 13 Sep 2000, Geert Uytterhoeven wrote:
> > On the m68k, we have some code to guestimate the CPU clock based on the
> > BogoMIPS (see get_cpuinfo() in arch/m68k/kernel/setup.c). Since we didn't care
> > about the overhead incurred by interrupt processing, it's not that accurate
> > though (I get 24.8 MHz on my 25 MHz 68040).
>
> That thought had occured to me.  Only problem is that the relationship
> between bogomips and cpu clock speed depends on, well, CPU.  For 601, it's
> one to one, and, for 604, two to one, and so on.  I don't know the ratios
> for 603, G3, or G4.

It's the same on m68k. Originally I had the ratios for 68040 only (and for
68000, which didn't matter at that time), but very soon I found them out for
other CPUs. All you need is a few testers :-)

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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