Re: Forward port of latest RT patch (2.6.21.5-rt20) to 2.6.22 available

Gene Heskett
2007-07-13T08:43:30Z

On Friday 13 July 2007, Peter Williams wrote:
>Ingo Molnar wrote:
>> * Gregory Haskins <ghaskins@novell.com> wrote:
>>> On Thu, 2007-07-12 at 14:07 +0200, Ingo Molnar wrote:
>>>> * Gregory Haskins <ghaskins@novell.com> wrote:
>>>>> Hi Ingo, Thomas, and the greater linux-rt community,
>>>>>
>>>>> I just wanted to let you guys know that our team has a port of
>>>>> the 21.5-rt20 patch for the 2.6.22 kernel available. [...]
>>>>
>>>> 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/
>>>
>>> Thats awesome, Ingo! Thanks! Could you publish a broken out version
>>> as well? We found it extremely valuable to be able to bisect this
>>> beast while working on the 21-22 port.
>>
>> we are working on something in this area :) Stay tuned ...
>
>I've just been reviewing these patches and have spotted an error in the
>file mm/slob.c at lines 500-501 whereby a non existent variable "c" is
>referenced. The attached patch is a proposed fix to the problem.

Could this explain why 2.6.22.1-rt1 seems to use a lot of swap? I've been as
high as 570 megs into swap, currently at 286megs after doing a
swapoff --a;swapon -a about 8 hours ago.

--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
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