Messages in this thread | | | Date | Thu, 22 Jul 2004 16:23:27 -0700 | From | Keshavamurthy Anil S <> | Subject | Re: sched domains bringup race? |
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On Thu, Jul 22, 2004 at 04:55:40PM -0500, Nathan Lynch wrote: > On Mon, 2004-07-19 at 02:31, Nick Piggin wrote: > > Keshavamurthy Anil S wrote: > > > Even on my system which is Intel 865 chipset (P4 with HT enabled system) > > > I see a bug check somewhere in the schedular_tick during boot. > > > However if I move the sched_init_smp() after do_basic_setup() the > > > kernel boots without any problem. Any clue here?
This was happening even without CONFIG_SCHED_SMT and later found to be ACPI bug. Sorry for the confusion.
> > > > There shouldn't be any problem doing that if we have to, obviously we > > need to know why. Is it possible that cpu_sibling_map, or one of the > > CPU masks isn't set up correctly at the time of the call? > > In 2.6.8-rc1-mm1 at least, backing this patch out fixed it for me on > ppc64: > > http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.8-rc1/2.6.8-rc1-mm1/broken-out/detect-too-early-schedule-attempts.patch > > Code with statements of the form: > > if (system_state == SYSTEM_BOOTING) > /* do something boot-specific */ > else > /* do something assuming system_state == SYSTEM_RUNNING */ > > is broken by this change. Parts of the cpu bringup code in arch/ppc64 > do this (and thus need to be fixed if the above change is kept). > Chances are there is similar code in some x86 setups. > > Nathan > - 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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