>-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of >Thomas Gleixner >Sent: Thursday, February 22, 2007 8:00 AM >To: Pierre Ossman >Cc: Arjan van de Ven; Jan Engelhardt; Luca Tettamanti; >linux-kernel@vger.kernel.org >Subject: Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1] > >On Thu, 2007-02-22 at 16:13 +0100, Pierre Ossman wrote: >> > Sure. My dmesg is full of mmc debug crud right now, but >I'll just reboot >> > and I'll have a clean one for you. >> > >> >> Here we go. > >> [ 44.498253] ACPI: Lid Switch [C136] >> [ 44.577672] No dock devices found. >> [ 44.714156] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3]) > >---------------------------------------------------------^^^^^ > >Here is the reason. The local APIC stops working in C3 state >and we fall >back to the PIT in that case. Not really exciting for dynticks, but the >only way to keep the system alive. There is a patch coming up from >Intel, which finds out how to use HPET even if it is not enabled by the >BIOS. This will still end up on IRQ#0, but will give way longer idle >sleeps than the PIT. > > tglx > >
Thomas, I have the patchset for this HPET part ready to roll out. But, looks like NO_HZ and lapic eventsource support is only in i386 and not in x86-64 in 2.6.21-rc1. Do you know the state of NO_HZ x86-64 support? Will it get into git soon? In which case I can rebase my patches against git and send it out for review/testing. Otherwise, I will send out my patches, which are against rt (and my initial implementation of this HPET part is only for x86-64). Thanks, Venki - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
