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Date: Fri, 10 Nov 2006 21:20:26 +0100 From: "Benoit Boissinot" <bboissin@...il.com> To: tglx@...utronix.de Cc: "Andrew Morton" <akpm@...l.org>, linux-kernel@...r.kernel.org Subject: Re: 2.6.19-rc5-mm1 On 11/10/06, Benoit Boissinot <bboissin@...il.com> wrote: > On 11/10/06, Thomas Gleixner <tglx@...utronix.de> wrote: > > On Fri, 2006-11-10 at 17:29 +0100, Benoit Boissinot wrote: > > > On 11/8/06, Andrew Morton <akpm@...l.org> wrote: > > > > [snip] > > > > - The hrtimer+dynticks code still doesn't work right for machines which halt > > > > their TSC in low-power states. > > > > > > > > > > With CONFIG_NO_HZ=y, xmoto (xmoto.sf.net, a 3d game) is sluggish, the > > > movement is not fluid (it is "bursty"). > > > > > > .config is at http://perso.ens-lyon.fr/benoit.boissinot/kernel/config-2.6.19-rc5-mm1 > > > lspci -vv: http://perso.ens-lyon.fr/benoit.boissinot/kernel/docked_lspci > > > dmesg: http://perso.ens-lyon.fr/benoit.boissinot/kernel/dmesg-2.6.19-rc5-mm1 > > > > I'm confused about that one: > > > > [ 8.966364] Disabling NO_HZ and high resolution timers due to timer broadcasting (C3 stops local apic) > > > > This message is nowhere in rc5-mm1. It was in rc4-mmX, but got removed > > in the updates. > > > I forget to mention I reverted the following patches from -mm: > i386-apic-timer-use-clockevents-broadcast.patch > acpi-verify-lapic-timer.patch > acpi-verify-lapic-timer-exports.patch > acpi-verify-lapic-timer-fix.patch > > since it did not boot with them. > > > > I can test any patch or provide any needed information. > > > > http://tglx.de/private/tglx/2.6.19-rc5-mm1-dyntick.diff > > > > That's the rework I did yesterday. > > > > I'll undo the reverts I did and try it on top of -mm > It works fine with the following additional patch. Thanks, Benoit Index: linux-mm/arch/i386/kernel/apic.c =================================================================== --- a/arch/i386/kernel/apic.c 2006-11-10 20:42:30.000000000 +0100 +++ b/arch/i386/kernel/apic.c 2006-11-10 20:42:41.000000000 +0100 @@ -610,6 +610,7 @@ if (evt->event_handler) clockevents_set_broadcast(evt, broadcast); } +EXPORT_SYMBOL_GPL(lapic_timer_idle_broadcast); int setup_profiling_timer(unsigned int multiplier) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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