Messages in this thread Patch in this message | | | Date | Thu, 12 Jul 2007 12:26:48 -0400 | From | "Gregory Haskins" <> | Subject | Re: Forward port of latest RT patch (2.6.21.5-rt20) to 2.6.22 available |
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On Thu, 2007-07-12 at 14:07 +0200, Ingo Molnar wrote: > great! We had the upstream -rt port to .22 in the works too, it was just > held up by the hpet breakage - which Thomas managed to fix earlier > today. I've released the 2.6.22.1-rt1 patch to the usual place: > > http://redhat.com/~mingo/realtime-preempt/
Hi Ingo, For the most part, it seems you guys have resolved most of the issues that we ran into as well (e.g. early-flush-tlb, relocated die-notifier, etc, come to mind). I found one patch that was missing that allows debug configurations to build properly. Heres that patch:
--- linux-2.6.21.orig/kernel/latency_trace.c +++ linux-2.6.21/kernel/latency_trace.c @@ -24,6 +24,7 @@ #include <linux/utsrelease.h> #include <asm/uaccess.h> #include <asm/unistd.h> +#include <asm/asm-offsets.h> #include <asm/rtc.h> #include <linux/stacktrace.h>
With this patch in place, I am able to build/boot both a 21.1-rt1 kernel with a standard x86_64 PREEMPT_RT+SMP both with and without the usual debug options, so that is great! We did find a regression. I was mistaken earlier when I mentioned our T60p laptops couldn't boot. It turns out that issue was resolved somewhere along the way and our published patches based on 21.5-rt19 do allow the laptop to boot event with acpi=on. With 22.1-rt1 the laptop crashes unless acpi=off. Now that we have your queue we will bisect this and post that fix as well.
Thanks! -Greg
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