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SubjectRe: [PATCH] boot time parameter to turn of TSC usage
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On Tue, 2003-03-18 at 16:39, Andrew Morton wrote:
> Stephen Hemminger <shemminger@osdl.org> wrote:
> >
> > For machines that don't want to cooperate and have bad TSC counter and/or
> > change CPU frequency without change support.
> >
> > This fixes the problem on Jerry Cooperstein's PIII laptop.
> > Could be useful for other people and tech support situations.
>
> Is there no way in which this can be auto-detected?

Will leave that for someone with more direct knowledge access to
the chipset info.

>
> > +__setup("notsclock", tsc_noclock_setup);
>
> People have recently worked to make Documentation/kernel-parameters.txt
> relatively up-to-date. Please try to remember to keep it in sync...
>

--- kernel-parameters.txt.orig 2003-03-18 08:36:39.000000000 -0800
+++ kernel-parameters.txt.new 2003-03-18 17:01:32.000000000 -0800
@@ -627,7 +627,12 @@

nosync [HW,M68K] Disables sync negotiation for all devices.

- notsc [BUGS=IA-32] Disable Time Stamp Counter
+ notsc [BUGS=IA-32] Disable Time Stamp Counter.
+ Turns off TSC in processor. Kernel must
+ be compiled without TSC support.
+
+ notsclock [BUGS=IA-32] Tells kernel not to use
+ Time Stamp Counter for gettimeofday.

nousb [USB] Disable the USB subsystem



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