Re: [PATCH 0/3] sched: newidle and RT wake-buddy fixes

From: Ingo Molnar
Date: Thu Jul 03 2008 - 11:12:33 EST



* Ingo Molnar <mingo@xxxxxxx> wrote:

>
> * Gregory Haskins <ghaskins@xxxxxxxxxx> wrote:
>
> > I may have found the issue: It looks like the hunk that initially
> > disables interrupts in load_balance_newidle() was inadvertently
> > applied to load_balance() instead during the merge to linux-tip. If
> > you fold the following patch into my original patch, it should set
> > things right again.
>
> ah, sorry - indeed! I've reactivated your patch and i'm testing it
> now.

-tip testing found that it still hangs at:

Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
x86 PAT enabled: cpu 1, old 0x7040600070406, new 0x7010600070106
CPU1: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02
Brought up 2 CPUs
Total of 2 processors activated (8044.97 BogoMIPS).
[...]

with this config:

http://redhat.com/~mingo/misc/config-Thu_Jul__3_16_49_53_CEST_2008.bad

on 3 separate test-systems.

I've again reverted both your fixup and the original commit. I've pushed
out the failing tree to the tmp.sched/devel.fe6149f5e82 -tip branch, you
should be able to reproduce it.

Ingo
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