[CentOS] rebuilding the kernel.

Jancio Wodnik jancio_wodnik at wp.pl
Sat Aug 9 19:29:45 UTC 2008


Yahia Tachwali pisze:
> 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.
As i remember: hdlc is build not as module, it is core kernel module, 
not module to load by modprobe - so in menuconfig is [*] with hdlc not 
[M] as module.

But maybe i'm wrong.
>
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