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#1 (**permalink**) 02-21-2008, 04:33 AM

Hi,

I'm on Slack12 using the vmlinuz-huge-smp-2.6.21.5-smp kernel.
I need to rebuild the kernel with one change - the system timer
from 250Hz to 1000Hz resolution. (Rosegarden wants this change).

Do I need to rebuild the modules too?

/usr/src/linux-2.6.21.5/README (line 231) implies that I need to rebuild
- but -
at boot I want to choose between my existing kernel and my new kernel.
If the new kernel needs its own modules, how do I have two sets of
modules co-existing?

Any ideas how to proceed?

#2 (**permalink**) 02-21-2008, 04:33 AM

Hi,

> Do I need to rebuild the modules too?

Yes.. well.. you should.

> Any ideas how to proceed?

Set 'CONFIG_LOCALVERSION' (General setup -> Local version) to something.

The kernel will then install / look for the modules at /lib/modules/$version$localversion

Regards,
Adrian

--
RFC 1925:
(11) Every old idea will be proposed again with a different name and
a different presentation, regardless of whether it works.

#3 (**permalink**) 02-21-2008, 04:33 AM

On Wed, 15 Aug 2007 19:44:25 +0200, Adrian Ulrich wrote:
> Hi,
>
>> Do I need to rebuild the modules too?
>
> Yes.. well.. you should.
>
>
>> Any ideas how to proceed?
>
> Set 'CONFIG_LOCALVERSION' (General setup -> Local version) to something.
>
> The kernel will then install / look for the modules at
> /lib/modules/$version$localversion
>
>
> Regards,
> Adrian
Adrian, thanks for quick reply.
Will try as you suggest, and post here how I get on - probably tomorrow.
Cheers,
Peter

#4 (**permalink**) 02-21-2008, 04:33 AM

On Wed, 15 Aug 2007 19:44:25 +0200, Adrian Ulrich wrote:

> Hi,
>
>> Do I need to rebuild the modules too?
>
> Yes.. well.. you should.
>
>
>> Any ideas how to proceed?
>
> Set 'CONFIG_LOCALVERSION' (General setup -> Local version) to something.
>
> The kernel will then install / look for the modules at
> /lib/modules/$version$localversion
>
>
> Regards,
> Adrian
Hi,

Built 100Hz kernel, and modules OK into /lib/modules/2.6.21.5-smp-100Hz.
All OK, Rosegarden is now happy.

Minor gotcha - the new module directory hadn't my NVIDIA-Linux-86-1.0-9755
driver. Reinstalled NVIDIA driver. Installed OK in 2.6.21.5-smp-100Hz,
but it also deleted existing
/lib/modules/2.6.21.5-smp/kernel/drivers/video/nvidia.ko
Had backed up all module directories, so no problem to copy it back.

Also, had to reinstall VMWare Player as it also installs its own modules.
This reinstall didn't delete the existing modules.

Built about 100 less modules than the approx. 1700 that Pat has in
/lib/modules/2.6.21.5-smp.
Seems /lib/modules/2.6.21.5-smp supports both generic and huge kernels.
From random check no scsi or reiserfs modules - already in my huge kernel.

Cheers,
Peter

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Rebuild 2.6 Kernel - need to rebuild modules too?