[Xenomai-help] __raw_*lock for Xenaomai 2.01 on ppc

[Xenomai-help] __raw_*lock for Xenaomai 2.01 on ppc

[Anders Blomdell]

Is it by design or mistake that I get the following undefined symbols on 
a PowerPC

# insmod xeno_nucleus.ko
xeno_nucleus: Unknown symbol __raw_read_lock
xeno_nucleus: Unknown symbol __raw_write_unlock
xeno_nucleus: Unknown symbol __raw_read_unlock
xeno_nucleus: Unknown symbol __raw_write_lock

unless the kernel is compiled with:

CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_SPINLOCK=y

Regards

Anders Blomdell

Re: [Xenomai-help] __raw_*lock for Xenaomai 2.01 on ppc

[Philippe Gerum]

Anders Blomdell wrote:
> Is it by design or mistake that I get the following undefined symbols on 
> a PowerPC
> 
> # insmod xeno_nucleus.ko
> xeno_nucleus: Unknown symbol __raw_read_lock
> xeno_nucleus: Unknown symbol __raw_write_unlock
> xeno_nucleus: Unknown symbol __raw_read_unlock
> xeno_nucleus: Unknown symbol __raw_write_lock
> 
> unless the kernel is compiled with:
> 
> CONFIG_DEBUG_KERNEL=y
> CONFIG_DEBUG_SPINLOCK=y
> 
> Regards
> 
> Anders Blomdell
> 
>

Patch version, please.

> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help@domain.hid
> https://mail.gna.org/listinfo/xenomai-help
> 


-- 

Philippe.

Re: [Xenomai-help] __raw_*lock for Xenaomai 2.01 on ppc

[Anders Blomdell]

>> Is it by design or mistake that I get the following undefined symbols 
>> on a PowerPC
>>
>> # insmod xeno_nucleus.ko
>> xeno_nucleus: Unknown symbol __raw_read_lock
>> xeno_nucleus: Unknown symbol __raw_write_unlock
>> xeno_nucleus: Unknown symbol __raw_read_unlock
>> xeno_nucleus: Unknown symbol __raw_write_lock
>>
>> unless the kernel is compiled with:
>>
>> CONFIG_DEBUG_KERNEL=y
>> CONFIG_DEBUG_SPINLOCK=y
> Patch version, please.
xenomai-2.0.1/arch/ppc/patches/adeos-ipipe-2.6.14-ppc-1.0-06.patch

The problem probably is that the EXPORT_SYMBOL are done in 
lib/spinlock_debug.c, which is only compiled if CONFIG_DEBUG_SPINLOCK=y

Regards

Anders Blomdell

Re: [Xenomai-help] __raw_*lock for Xenaomai 2.01 on ppc

[Philippe Gerum]

Anders Blomdell wrote:
>>> Is it by design or mistake that I get the following undefined symbols 
>>> on a PowerPC
>>>
>>> # insmod xeno_nucleus.ko
>>> xeno_nucleus: Unknown symbol __raw_read_lock
>>> xeno_nucleus: Unknown symbol __raw_write_unlock
>>> xeno_nucleus: Unknown symbol __raw_read_unlock
>>> xeno_nucleus: Unknown symbol __raw_write_lock
>>>
>>> unless the kernel is compiled with:
>>>
>>> CONFIG_DEBUG_KERNEL=y
>>> CONFIG_DEBUG_SPINLOCK=y
>>
>> Patch version, please.
> 
> xenomai-2.0.1/arch/ppc/patches/adeos-ipipe-2.6.14-ppc-1.0-06.patch
> 
> The problem probably is that the EXPORT_SYMBOL are done in 
> lib/spinlock_debug.c, which is only compiled if CONFIG_DEBUG_SPINLOCK=y
> 

lib/debug_spinlock.c adds exports for the _raw_* symbols, not for 
__raw_* ones (actually, I did add those since they were missing in the 
vanilla kernel in the first place). At first sight, the issue looks like 
related to linux/spinlock_up.h not defining no-ops for those symbols in 
the non-debug case. Maybe another vanilla kernel issue.

-- 

Philippe.