Preferred way for rt-linux using git

Preferred way for rt-linux using git

[dashesy]

Hi,

I am new to rt-linux, what is the preferred way of getting the source
and applying the patch using git?
Should I do:
"git clone git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
rt/2.6.33"
or maybe I should start from the long-term 2.6.33 version?
"git clone git://git.kernel.org/pub/scm/linux/kernel/git/longterm/linux-2.6.33.y.git
linux-2.6.33"
then apply the newest patch?

Thanks for the great work BTW

dashesy

Re: Preferred way for rt-linux using git

[John Kacur]

On Fri, Apr 8, 2011 at 5:51 PM, dashesy <dashesy@gmail.com> wrote:
>
> Hi,
>
> I am new to rt-linux, what is the preferred way of getting the source
> and applying the patch using git?
> Should I do:
> "git clone git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
> rt/2.6.33"
> or maybe I should start from the long-term 2.6.33 version?
> "git clone git://git.kernel.org/pub/scm/linux/kernel/git/longterm/linux-2.6.33.y.git
> linux-2.6.33"
> then apply the newest patch?
>
> Thanks for the great work BTW
>

For -rt you want to clone the one in tip. tglx pulls from stable and
merges it into -rt himself.
The latest tag is 2.6.33.9-rt31

If you have any problems with it, we're always interesting in hearing
about them.

Thanks
John Kacur

Re: Preferred way for rt-linux using git

[Carsten Emde]

On 04/08/2011 06:41 PM, John Kacur wrote:
> On Fri, Apr 8, 2011 at 5:51 PM, dashesy<dashesy@gmail.com>  wrote:
>> I am new to rt-linux, what is the preferred way of getting the source
>> and applying the patch using git?
>> Should I do:
>> "git clone git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
>> rt/2.6.33"
>> or maybe I should start from the long-term 2.6.33 version?
>> "git clone git://git.kernel.org/pub/scm/linux/kernel/git/longterm/linux-2.6.33.y.git
>> linux-2.6.33"
>> then apply the newest patch?
>> Thanks for the great work BTW
> For -rt you want to clone the one in tip. tglx pulls from stable and
> merges it into -rt himself.
> The latest tag is 2.6.33.9-rt31
> If you have any problems with it, we're always interesting in hearing
> about them.
That's correct. The more testers we have, the earlier the RT version 
under development will become stable. However, there is no guarantee, 
and sometimes - for example now - tip may even contain unreleased 
material that runs just for a couple of days on a limited number of 
machines.

Alternatively, if you do not have the time to test software under 
development and you would like to use it for production purposes, you 
may want to use the "Latest Stable" PREEMPT_RT release. This "Latest 
Stable" version underwent heavy testing on a number of different 
machines, and latency plots and long-term latency recording results are 
available in all cases. The "Latest Stable" version is announced here -> 
osadl.org/Latest-Stable, the related QA data are available here -> 
osadl.org/QA.

Hope this helps,
Carsten.

Re: Preferred way for rt-linux using git

[Niccolò Belli]

Hi,
Which kernel version does tip contain now?

Darkbasic

Re: Preferred way for rt-linux using git

[Carsten Emde]

On 04/09/2011 12:05 AM, Niccolò Belli wrote:
> Which kernel version does tip contain now?
The one that you recently called "a useless, ancient kernel".

Something that is useless for you, is not necessarily useless for all of us.

	-Carsten.
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Re: Preferred way for rt-linux using git

[Oon-Ee Ng]

2011/4/9 Carsten Emde <C.Emde@osadl.org>:
> On 04/09/2011 12:05 AM, Niccolò Belli wrote:
>>
>> Which kernel version does tip contain now?
>
> The one that you recently called "a useless, ancient kernel".
>
> Something that is useless for you, is not necessarily useless for all of us.
>
>        -Carsten.

It IS frustrating to some extents for some users =). In particular,
systemd is not usable on 2.6.33. 'useless and ancient' isn't fair,
though, its just older than the features systemd uses.
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Re: Preferred way for rt-linux using git

[Niccolò Belli]

Il 09/04/2011 03:05, Oon-Ee Ng ha scritto:
> 'useless and ancient' isn't fair

It may not be fair, but on the desktop (a sandy bridge one) it doesn't
even boot because of lack of drivers and on my laptop it crashs every 5
minutes because of the buggy intel drivers.

For _me_ it's 'useless and ancient' because it's too old to run on the
desktop and too buggy (it's a 2.6.33 vanilla fault, not an rt one) to
run on my laptop. I have nothing against rt.

Darkbasic

Re: Preferred way for rt-linux using git

[Carsten Emde]

On 04/09/2011 02:50 PM, Niccolò Belli wrote:
> Il 09/04/2011 03:05, Oon-Ee Ng ha scritto:
> It may not be fair, but on the desktop (a sandy bridge one) it doesn't
> even boot because of lack of drivers and on my laptop it crashs every 5
> minutes because of the buggy intel drivers.
> For _me_ it's 'useless and ancient' because it's too old to run on the
> desktop and too buggy (it's a 2.6.33 vanilla fault, not an rt one) to
> run on my laptop. I have nothing against rt.
Have you ever tried to backport the required drivers to 2.6.33? We did 
it with a number of recent kernel components; was not too difficult. 
Which drivers do you need?

	-Carsten.
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Re: Preferred way for rt-linux using git

[Niccolò Belli]

Il 09/04/2011 15:09, Carsten Emde ha scritto:
> Have you ever tried to backport the required drivers to 2.6.33? We did
> it with a number of recent kernel components; was not too difficult.
> Which drivers do you need?

Uhm... I fear it will not be simple, among other things I will have to
backport i2c, sata3, maybe ethernet and above all the whole intel
graphic stack from 2.6.40 aka intel drm git branch (hoping it will solve
the graphic corruption problems I have with 2.6.38 and 2.6.39-rc1). I
really hope rt will find its way into mainline, everything will be much
more simple.

Darkbasic