Kernel modules

Kernel modules

[Chuck Kamas]

Hi all,

I am trying to compile a very small kernel.  To do this I have a few
kernel modules I would like in the root file system.  But when I load OE
I see that there are no kernel modules in the fs.  I found a way to
include them by adding a RDEPENDS line with kernel-module-i2c-core.
This places it in the rootfs.  My question is there a better, automatic
way, to have all kernel modules included in the rootfs?

Chuck

Re: Kernel modules

[Marcin Juszkiewicz]

Dnia sobota, 16 maja 2009 o 01:22:46 Chuck Kamas napisał(a):
> Hi all,
>
> I am trying to compile a very small kernel.  To do this I have a few
> kernel modules I would like in the root file system.  But when I load
> OE I see that there are no kernel modules in the fs.  I found a way
> to include them by adding a RDEPENDS line with
> kernel-module-i2c-core. This places it in the rootfs.  My question is
> there a better, automatic way, to have all kernel modules included in
> the rootfs?

"kernel-modules" package depends on all packages with kernel modules.

Regards, 
-- 
JID:      hrw@jabber.org
Website:  http://marcin.juszkiewicz.com.pl/
LinkedIn: http://www.linkedin.com/in/marcinjuszkiewicz

Re: Kernel modules

[Koen Kooi]

On 16-05-09 01:22, Chuck Kamas wrote:
> Hi all,
>
> I am trying to compile a very small kernel.  To do this I have a few
> kernel modules I would like in the root file system.  But when I load OE
> I see that there are no kernel modules in the fs.  I found a way to
> include them by adding a RDEPENDS line with kernel-module-i2c-core.

And it can't be said enough:

NEVER use rdepends to drag in kernelmodules, use rrecommends instead

Re: Kernel modules

[G. Eismann]

On Sábado 16 Mayo 2009 09:31:24 Marcin Juszkiewicz escribió:
> Dnia sobota, 16 maja 2009 o 01:22:46 Chuck Kamas napisał(a):
> > Hi all,
> >
> > I am trying to compile a very small kernel.  To do this I have a few
> > kernel modules I would like in the root file system.  But when I load
> > OE I see that there are no kernel modules in the fs.  I found a way
> > to include them by adding a RDEPENDS line with
> > kernel-module-i2c-core. This places it in the rootfs.  My question is
> > there a better, automatic way, to have all kernel modules included in
> > the rootfs?
>
> "kernel-modules" package depends on all packages with kernel modules.
>

BTW, is there any way to install the modules but not the kernel image?
I have the kernel in a separate partition, so I don't need it into the rootfs.

Regards
-- 
  - Eismann -

what not to do in a recipe (was: Kernel modules)

[Rolf Leggewie]

Koen Kooi wrote:
> And it can't be said enough:
> 
> NEVER use rdepends to drag in kernelmodules, use rrecommends instead

Thank you for pointing this out.  I was unaware of it and thought it 
would be a good idea to document such common mistakes in the wiki.

http://wiki.openembedded.net/index.php/Common_mistakes_in_a_recipe

Please add any other FMM (frequently made mistake).  To keep the list 
readable, let's focus on mistakes that lead to serious problems.

Re: what not to do in a recipe (was: Kernel modules)

[Ihar Hrachyshka]

On Sat, May 16, 2009 at 4:38 PM, Rolf Leggewie
<no2spam@nospam.arcornews.de> wrote:
> Koen Kooi wrote:
>>
>> And it can't be said enough:
>>
>> NEVER use rdepends to drag in kernelmodules, use rrecommends instead
>
> Thank you for pointing this out.  I was unaware of it and thought it would
> be a good idea to document such common mistakes in the wiki.
>
> http://wiki.openembedded.net/index.php/Common_mistakes_in_a_recipe
>
> Please add any other FMM (frequently made mistake).  To keep the list
> readable, let's focus on mistakes that lead to serious problems.

Maybe some code snippets will be good - for every mistake.

>
>
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
>

Re: what not to do in a recipe

[Koen Kooi]

On 16-05-09 15:38, Rolf Leggewie wrote:
> Koen Kooi wrote:
>> And it can't be said enough:
>>
>> NEVER use rdepends to drag in kernelmodules, use rrecommends instead
>
> Thank you for pointing this out. I was unaware of it and thought it
> would be a good idea to document such common mistakes in the wiki.
>
> http://wiki.openembedded.net/index.php/Common_mistakes_in_a_recipe
>
> Please add any other FMM (frequently made mistake). To keep the list
> readable, let's focus on mistakes that lead to serious problems.

Thanks!

regards,

Koen

Re: Kernel modules

[Cliff Brake]

On Sat, May 16, 2009 at 5:21 AM, G. Eismann <g.eismann@gmx.net> wrote:

> BTW, is there any way to install the modules but not the kernel image?
> I have the kernel in a separate partition, so I don't need it into the rootfs.

One way is to put the following in the kernel recipe:

FILES_kernel-image_<machine_name> = ""

Cliff

-- 
=======================
Cliff Brake
http://bec-systems.com

Re: Kernel modules

[G. Eismann]

On Sábado 16 Mayo 2009 23:38:20 Cliff Brake escribió:
> On Sat, May 16, 2009 at 5:21 AM, G. Eismann <g.eismann@gmx.net> wrote:
> > BTW, is there any way to install the modules but not the kernel image?
> > I have the kernel in a separate partition, so I don't need it into the
> > rootfs.
>
> One way is to put the following in the kernel recipe:
>
> FILES_kernel-image_<machine_name> = ""

Thanks for the response. I'll try it.
-- 
  - Eismann -

Re: Kernel modules

[Koen Kooi]

On 16-05-09 23:38, Cliff Brake wrote:
> On Sat, May 16, 2009 at 5:21 AM, G. Eismann<g.eismann@gmx.net>  wrote:
>
>> BTW, is there any way to install the modules but not the kernel image?
>> I have the kernel in a separate partition, so I don't need it into the rootfs.
>
> One way is to put the following in the kernel recipe:
>
> FILES_kernel-image_<machine_name>  = ""

Please don't do that, it breaks all sorts of things, one of which is 
field upgrades.

regards,

Koen

Re: Kernel modules

[Ihar Hrachyshka]

On Sun, May 17, 2009 at 10:24 AM, Koen Kooi <k.kooi@student.utwente.nl> wrote:
> On 16-05-09 23:38, Cliff Brake wrote:
>>
>> On Sat, May 16, 2009 at 5:21 AM, G. Eismann<g.eismann@gmx.net>  wrote:
>>
>>> BTW, is there any way to install the modules but not the kernel image?
>>> I have the kernel in a separate partition, so I don't need it into the
>>> rootfs.
>>
>> One way is to put the following in the kernel recipe:
>>
>> FILES_kernel-image_<machine_name>  = ""
>
> Please don't do that, it breaks all sorts of things, one of which is field
> upgrades.

Your suggestion?

>
> regards,
>
> Koen
>
>
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
>

Re: Kernel modules

[Graeme Gregory]

Ihar Hrachyshka wrote:
> On Sun, May 17, 2009 at 10:24 AM, Koen Kooi <k.kooi@student.utwente.nl> wrote:
>   
>> On 16-05-09 23:38, Cliff Brake wrote:
>>     
>>> On Sat, May 16, 2009 at 5:21 AM, G. Eismann<g.eismann@gmx.net>  wrote:
>>>
>>>       
>>>> BTW, is there any way to install the modules but not the kernel image?
>>>> I have the kernel in a separate partition, so I don't need it into the
>>>> rootfs.
>>>>         
>>> One way is to put the following in the kernel recipe:
>>>
>>> FILES_kernel-image_<machine_name>  = ""
>>>       
>> Please don't do that, it breaks all sorts of things, one of which is field
>> upgrades.
>>     
>
> Your suggestion?
>
>   
As nothing depends on kernel-image other than kernel I would suggest
breaking this dependency. Then if you want the image of the kernel on
your rootfs you can explicitly depend on kernel-image in a task.

Graeme

Re: Kernel modules

[Chuck Kamas]

Thanks,  I add a rrecommends for each kernel module I have in my .config.
 
BTW, is there a way to have OE scan the kernel .config and automatically pull in all the kernel modules?
 
Chuck
 

________________________________

From: openembedded-devel-bounces@lists.openembedded.org on behalf of Koen Kooi
Sent: Sat 5/16/2009 1:55 AM
To: openembedded-devel@openembedded.org
Subject: Re: [oe] Kernel modules



On 16-05-09 01:22, Chuck Kamas wrote:
> Hi all,
>
> I am trying to compile a very small kernel.  To do this I have a few
> kernel modules I would like in the root file system.  But when I load OE
> I see that there are no kernel modules in the fs.  I found a way to
> include them by adding a RDEPENDS line with kernel-module-i2c-core.

And it can't be said enough:

NEVER use rdepends to drag in kernelmodules, use rrecommends instead


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Openembedded-devel@lists.openembedded.org
http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel

Re: Kernel modules

[Tom Rini]

On Sun, May 17, 2009 at 09:24:51AM +0200, Koen Kooi wrote:
> On 16-05-09 23:38, Cliff Brake wrote:
>> On Sat, May 16, 2009 at 5:21 AM, G. Eismann<g.eismann@gmx.net>  wrote:
>>
>>> BTW, is there any way to install the modules but not the kernel image?
>>> I have the kernel in a separate partition, so I don't need it into the rootfs.
>>
>> One way is to put the following in the kernel recipe:
>>
>> FILES_kernel-image_<machine_name>  = ""
>
> Please don't do that, it breaks all sorts of things, one of which is  
> field upgrades.

If and only if it's what your distro wants, of course.

-- 
Tom Rini

Re: Kernel modules

[Koen Kooi]

On 17-05-09 20:13, Chuck Kamas wrote:
> Thanks,  I add a rrecommends for each kernel module I have in my .config.
>
> BTW, is there a way to have OE scan the kernel .config and automatically pull in all the kernel modules?

RRECOMMENDS = "kernel-modules"

regards,

Koen

Re: Kernel modules

[Chuck Kamas]

Koen,

Thanks, I'll give that a try.

Chuck


-----Original Message-----
From: openembedded-devel-bounces@lists.openembedded.org
[mailto:openembedded-devel-bounces@lists.openembedded.org] On Behalf Of
Koen Kooi
Sent: Sunday, May 17, 2009 11:27 AM
To: openembedded-devel@openembedded.org
Subject: Re: [oe] Kernel modules

On 17-05-09 20:13, Chuck Kamas wrote:
> Thanks,  I add a rrecommends for each kernel module I have in my
.config.
>
> BTW, is there a way to have OE scan the kernel .config and
automatically pull in all the kernel modules?

RRECOMMENDS = "kernel-modules"

regards,

Koen


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