[CentOS] rebuilding the kernel.

[Yahia Tachwali]

Yahia Tachwali wrote:

> Thank you very much for the link.. I have built a new bootable kernel 
> 2.6.9-67 on my machine. However I still have a problem :(
>
> During the installation at "make menuconfig" stage after "make 
> oldconfig" I have added the generic HDLC package with synchronous PPP 
> support and saved the new config then run
>
> rpmbuild -bb --target=`uname -m` kernel-2.6.spec 2> build-err.log | 
> tee build-out.log.
>
> After reboot, I rechecked the menuconfig to make sure that the HDLC 
> setting is there. I am not sure if this setting took effect or I have 
> to make modules or build something else. So how would I know that the 
> HDLC package is availalbe and built in?
>
> To elaborate more on the reasons behind this HDLC package, I am trying 
> to build a device driver that asks for HDLC support. upon building the 
> driver, I get the following warnings:
>
>  Building modules, stage 2.
>  MODPOST
> *** Warning: "unregister_hdlc_device" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
> *** Warning: "hdlc_ioctl" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
> *** Warning: "hdlc_open" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
> *** Warning: "register_hdlc_device" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
> *** Warning: "hdlc_close" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
> *** Warning: "alloc_hdlcdev" 
> [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined!
>
> Therefore, I am suspecting that I need the HDLC package available. I 
> would be extremely thankful for anybody who can help me in this 
> problem. Am I going into the wrong direction?
>
>
>
> jancio_wodnik at wp.pl wrote:
>
>> Johnny Hughes pisze:
>>
>>> jancio_wodnik at wp.pl wrote:
>>>
>>>> Yahia Tachwali pisze:
>>>>
>>>>> Hello folks,
>>>>
>>>>
>>>> Hi. It is request for it to add this in kernel for centosplus, look 
>>>> at this: http://bugs.centos.org/view.php?id=3019
>>>>
>>>>>
>>>>> I am trying to add HDLC module support in the menuconfig. However, 
>>>>> I am facing difficulties in rebuilding the kernel and modules. My 
>>>>> main objective is to get the HDLC supported in kernel 2.6.9. I 
>>>>> have a CentOS 4.4 with kernel 2.6.9.42. I need help in finding the 
>>>>> best way to add the HDLC support whether through getting an RPM 
>>>>> package for it or refering me to the right procedure in rebuilding 
>>>>> the kernel.
>>>>>
>>>>> Thank you very much in advance for your help.
>>>>
>>>>
>>>> No problem.
>>>
>>>
>>>
>>> That request was for CentOS-5, not CentOS-4 :D
>>
>>
>> ? I can see: Category: [CentOS-4] kernel-centosplus My request was 
>> exactly for centos 4 branch, but for 5 is good too. So, can i count 
>> for You to make it posible in centos4 to support hdlc ?
>>
>>>
>>> HDLC was added to the CentOS-5 plus kernel for the latest version.
>>>
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>>>
>>>
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Sorry about the top posting :(

After reconfiguring the menuconfig to enable the HDLC suport package 
(under device drivers). I have tried also do:

modinfo hdlc

but i did not get any info in return... Also I have tried :

lsmod

to check for hdlc module but I could not find it... I guess I am missing 
something to activate my new settings in the menuconfig.  Is there a way 
to verify that my new settings active!! Does any body know about the 
HDLC modules loading in the 2.6.9. Please advise. And thank you all for 
your help.