Messages in this thread |  | | Date | Fri, 30 Aug 2002 16:46:38 +1000 | From | David Gibson <> | Subject | Re: [PATCH][2.5.32] CPU frequency and voltage scaling (0/4) |
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On Thu, Aug 29, 2002 at 02:22:51PM -0700, george anzinger wrote: > Linus Torvalds wrote: > > > > In article <1030618420.7290.112.camel@irongate.swansea.linux.org.uk>, > > Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: > > >> { min-Hz, max-Hz, policy } > > >> > > > > > >For a few of the processors "event-hz" or similar would be nice. The > > >Geode supports hardware assisted bursting to full processor speed when > > >doing SMM, I/O and IRQ handling. > > > > Hmm.. I would assume that you'd just use the high frequency for that? > > So, for example, assuming you have a 600/300 Geode, when you do > > > > { 0, ~0UL, "power-save" } > > > > that would tell the Geode driver to run at 300MHz normally > > ("power-save"), and at 600Mhz when doing critical events. > > > > In contrast, a > > > > { 0, ~0UL, "performance" } > > > > mode would mean that it always runs at 600MHz (modulo heat throttling, > > of course). > > > > And a > > > > { 300, 300, "power-save" } > > How about { 50, 50, "power-save" } where the number refers > to percent of full? > I.e. same meaning IFF full is 600, but suppose it is 800.
Um... how about not. I can't think of a single situation in which specifying this as a percentage of full speed is useful. It's even less useful than raw MHz.
-- David Gibson | For every complex problem there is a david@gibson.dropbear.id.au | solution which is simple, neat and | wrong. http://www.ozlabs.org/people/dgibson - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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