[PATCH 1/2] add ARM FCSE support

Martix martix.cz at gmail.com
Tue Feb 15 14:28:11 CET 2011

thanks for your FCSE patchset update. I will test it in couple of days
with SHR on my Neo FreeRunner and if everything will be alright I'll
ask for submission to Openmoko kernel tree. I hope FCSE patchset will
reach Linux mainline soon.

Best regards,

Martin 'Martix' Holec

2011/2/15 Gilles Chanteperdrix <gilles.chanteperdrix at xenomai.org>:
> Gennady Kupava wrote:
>> В Втр, 15/02/2011 в 04:44 +0100, Gilles Chanteperdrix пишет:
>>> Vasily Khoruzhick wrote:
>>>> On Sunday 19 September 2010 13:52:21 Gilles Chanteperdrix wrote:
>>>>> Gennady Kupava wrote:
>>>>>> В Сбт, 18/09/2010 в 22:53 +0300, Vasily Khoruzhick пишет:
>>>>>>> So, what about FCSE patches for 2.6.36?
>>>>>> And for 2.6.34.
>>>>> I did not work on this. Do not worry, I will notify you when it is done.
>>>> Ping?
>>> Hi all,
>>> the patch series for FCSE with Linux 2.6.37 is available in the
>>> following git repository:
>>> git://git.xenomai.org/ipipe-gch.git
>>> in a branch named fcse-2.6.37
>>> Also available through gitweb here:
>>> http://git.xenomai.org/?p=ipipe-gch.git;a=shortlog;h=refs/heads/fcse-2.6.37
>>> This is a forward port of the 2.6.33 v4 patch, a few things have
>>> changed, a few cleanups here and there, while splitting the patch in
>>> several parts. The most notable change is that we no longer restart
>>> cache flushes when they were preempted, it was, in fact, useless.
>>> Also, I noticed that the hackbench test is not the only one in LTP
>>> testsuite to benefit from the speed improvement brought by this patch,
>>> the whole LTP testsuite takes actually 15% less time to execute with the
>>> FCSE patch on.
>>> I think the patch series can be submitted to mainline, at least as a
>>> request for comments. If you end up submitting them after 2.6.38 is out,
>>> then please tell me, and I will rebase on 2.6.38. The most tedious part
>>> of the job was to split the patch in several parts, now that it is done,
>>> we can rebase easily.
>> Hi, Gilles,
>> My plan with your patches is to test it here with lmbench, but I have
>> some troubles with .37 at this moment, so i need to go other round to
>> resolve .37 problems first. I'll post lmbench result then it'll be
>> ready.
> No problem, I am not in a hurry, I do not hope much from mainline
> submission, my aim is to work on the Adeos I-pipe patch for ARM, and now
> that I have the FCSE, I can work on that. Simply, what I meant to tell,
> is that if we rebase the patch on 2.6.38, we need to revalidate it
> before submission, we can not send it simply rebased and hope that it works.
> Note that tests with lmbench have already been done, you may find the
> results in the paper we made with Richard Cochran:
> http://sisyphus.hd.free.fr/~gilles/pub/fcse/paper.pdf
> Regards.
> --
>                                            Gilles.

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