Re: [Celinux-dev] Re: [PATCH] preset loops_per_jiffy for fasterbooting

[Geert Uytterhoeven]

On Fri, 9 Jul 2004, Adam Kropelin wrote:
> On Fri, Jul 09, 2004 at 05:20:07PM -0700, Tim Bird wrote:
> > Adam Kropelin wrote:
> +		printk("Set 'Preset loops_per_jiffy'=%lu for preset lpj.\n",
> +			loops_per_jiffy);

> +config PRESET_LPJ
> +	int "Preset loops_per_jiffy" if FASTBOOT
> +	default 0
> +	help
> +	  This is the number of loops used by delay() to achieve a single
> +	  jiffy of delay inside the kernel.  It is normally calculated at
> +	  boot time, but that calculation can take up to 250 ms per CPU.
> +	  Specifying a constant value here will eliminate that delay.
> +
> +	  loops_per_jiffy is roughly BogoMips * 5000. To determine the correct
> +	  value for your kernel, first turn off the fast booting option,
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> +	  compile and boot the kernel on your target hardware, then see what
> +	  value is printed during the kernel boot.  Use that value here.

This is no longer true, it will always print the value if lpj=0.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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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