Re: Problems compiling kernel

["Ramón Finger Lilienthal" <ramon@instramed.com.br>]

Dear Sanjeev,

Thanks for your help.

Now, I am building for omap5912osk, and we have a new board omap5912 
based.  I hope in some months changing my efforts to OMAP35.

Part of my .config file is listed below. The flag CONFIG_CPU_FREQ_TABLE 
was set to "m", I changed to "y". I tried to compile again, but the 
error still happening.
I took a look at .config after compiling and CONFIG_CPU_FREQ_TABLE got 
back to "m" (automatically).

==== .config  ===
#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=m
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=m
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m

#
=============

After, i changed the flags CONFIG_CPU_FREQ_TABLE=y and 
CONFIG_CPU_FREQ_STAT=y.
Then that error didn't occurred again, but another error happened:

====
  CHK     include/linux/compile.h
  CC [M]  drivers/net/b44.o
  Kernel: arch/arm/boot/Image is ready
  LD      arch/arm/boot/compressed/vmlinux
  OBJCOPY arch/arm/boot/zImage
  Kernel: arch/arm/boot/zImage is ready
  Building modules, stage 2.
  MODPOST 1059 modules
FATAL: drivers/net/b44: sizeof(struct ssb_device_id)=6 is not a modulo 
of the size of section __mod_ssb_device_table=16.
Fix definition of struct ssb_device_id in mod_devicetable.h
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
====

Again, thanks for your help

Regards,
Eng. Ramon F. Lilienthal
Project Engineer
Instramed Ltda. - www.instramed.com.br
+55 (51) 33344199 ext. 213



Premi, Sanjeev wrote:
> Ramon,
>
> Can you confirm if you have CONFIG_CPU_FREQ_TABLE=y in the .config?
>
> The 'undefined' functions in your compile log are defined in drivers/cpufreq/freq_table.c
> If you look at Makefile in the same dir, this file is included in compile based on the flag mentioned above.
>
> Which platform are you building for?
> Are you sure you haven't disabled CPU_FREQ manually?
> If you haven't made any modifications the problem could be in the defconfig?
>
> Though, I believe that cpu-omap.c may also need to be updated to take care of CONFIG_CPU_FREQ OR specifically CONFIG_CPU_FREQ_TABLE.
>
> Best regards,
> Sanjeev 
>
>   
>> -----Original Message-----
>> From: linux-omap-owner@vger.kernel.org 
>> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of Ramón 
>> Finger Lilienthal
>> Sent: Tuesday, October 21, 2008 7:13 PM
>> To: linux_omap
>> Subject: Problems compiling kernel
>>
>> Dear fellows,
>>
>> I am facing some compiling errors in my kernel.
>>
>> My kernel version is:
>>
>> VERSION = 2
>> PATCHLEVEL = 6
>> SUBLEVEL = 27
>> EXTRAVERSION =
>> NAME = Rotary Wombat
>>
>> And I updated the source using "git pull" today,  before 
>> trying to compile the kernel.
>>
>> I got these errors:
>>
>>   MODPOST vmlinux.o
>>   GEN     .version
>>   CHK     include/linux/compile.h
>>   UPD     include/linux/compile.h
>>   CC      init/version.o
>>   LD      init/built-in.o
>>   LD      .tmp_vmlinux1
>> arch/arm/plat-omap/built-in.o: In function `omap_verify_speed':
>> /home/ramon/work/linux-omap-2.6.new.teste/arch/arm/plat-omap/c
>> pu-omap.c:46: 
>> undefined reference to `cpufreq_frequency_table_verify'
>> arch/arm/plat-omap/built-in.o: In function `omap_cpu_init':
>> /home/ramon/work/linux-omap-2.6.new.teste/arch/arm/plat-omap/c
>> pu-omap.c:119: 
>> undefined reference to `cpufreq_frequency_table_cpuinfo'
>> /home/ramon/work/linux-omap-2.6.new.teste/arch/arm/plat-omap/c
>> pu-omap.c:121: 
>> undefined reference to `cpufreq_frequency_table_get_attr'
>> arch/arm/plat-omap/built-in.o:(.data+0x91c): undefined 
>> reference to `cpufreq_freq_attr_scaling_available_freqs'
>> make: *** [.tmp_vmlinux1] Error 1
>>
>> I looked in "plat-omap.c" and it calls the library cpufreq.h.
>> cpufreq.h has the prototipes of that undefined references and 
>> cpufreq.c has the impementations of it.
>>
>> So, I don't understand why it is happening. By the way, I am 
>> a begginer in linux development.
>>
>> Any help will be welcome.
>>
>>
>> --
>> Regards,
>> Eng. Ramon F. Lilienthal
>> Project Engineer
>> Instramed Ltda. - www.instramed.com.br
>> +55 (51) 33344199 ext. 213
>>
>> --
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