Messages in this thread | | | Subject | Re: [PATCH] cyclone-timer_A9 | From | Alan Cox <> | Date | 08 Aug 2002 14:18:39 +0100 |
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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 ?
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