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SubjectRe: [PATCH] cyclone-timer_A9
On Thu, 2002-08-08 at 06:18, Alan Cox wrote:
> On Thu, 2002-08-08 at 03:15, john stultz wrote:
> > Marcelo,
> > This patch (which applies on top of my tsc-disable_B9 patch as well as
> > James Cleverdon's summit patch), is a performance improvement for
> > multi-CEC IBM x440 systems which suffer from drifting TSCs. Rather then
> > forcing do_gettimeofday to call do_slow_gettimeoffset and access the PIT
> > (as my tsc-disable patch does), passing "cyclone" as a boot option will
> > make do_gettimeofday use a 100Mhz performance counter found in the
> > Summit chipset.
> Why not probe for the summit chipset ?

Yea, its on my list. Once Jame's patch settles down I plan to piggy back
off that.


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