Re: Xen and reiser4

* Re: Xen and reiser4
       [not found] <41C08801.4060908@spaceball.cjb.net>
@ 2004-12-15 18:56 ` Ming-Wei Shih
  2004-12-17 19:17   ` Ming-Wei Shih
  0 siblings, 1 reply; 22+ messages in thread
From: Ming-Wei Shih @ 2004-12-15 18:56 UTC (permalink / raw)
  To: xen-devel

>>> Hi all
>>>
>>> Thanks to Milan I am able to get further with xen and reiser4
>>>
>>> - In swap line 6 and 7 status_flags.c
>>>
>>>   #include <linux/bio.h>
>>>   #include <linux/page-flags.h>
>>>
>>>
>>> - PACKED is redefined, but the definitions are the same, so the gcc 
>>> warning can be ignored IMO
>>>
>>>    dformat.h:#define PACKED __attribute__((packed))
>>>    xen.h:#define PACKED __attribute__ ((packed))
>>
>>  
>>
>
> Yup, these 2 are the same, I just didn't recall whether they were
> exactly the same.  And I renamed reiser4's definition (and its usage
> inside reiser4) because the messages caused by it somehow prevented me
> from seeing the actual error  :) 
>
>>>
>>> however during linking I get this, and I could'nt find 
>>> perthread_pages_count anywher in the kernel
>>> src tree
>>>
>>>   LD      init/built-in.o
>>>   LD      .tmp_vmlinux1
>>> fs/built-in.o(.text+0x37701): In function `carry':
>>> : undefined reference to `perthread_pages_count'
>>> fs/built-in.o(.text+0x3771e): In function `carry':
>>> : undefined reference to `perthread_pages_reserve'
>>> fs/built-in.o(.text+0x37821): In function `carry':
>>> : undefined reference to `perthread_pages_count'
>>> fs/built-in.o(.text+0x3782f): In function `carry':
>>> : undefined reference to `perthread_pages_release'
>>> make: *** [.tmp_vmlinux1] Error 1
>>
>>  
>>
>
> Now this is strange.  In my sources with xen+reiser4, I get these three
> occurences which are defining this symbol:
>
> | ./include/linux/gfp.h:int  perthread_pages_count(void);
> | ./mm/page_alloc.c:int perthread_pages_count(void)
> | ./mm/page_alloc.c:EXPORT_SYMBOL(perthread_pages_count);
>
> (where the first is defining the function for use in other files, the
> second will be followed by the actual code of the function, and the
> third exports the function as a symbol which is callable by other
> modules)
>
> I don't think xen doesn't use page_alloc.c (in addition, it got built in
> my xen tree), so maybe you want to try a "make mrproper"? (put backup
> your .config before this, or do a "make clean"...)

No matter what I do (mrproper, different reiser4 patches, untar from 
clean src+patch) I always
get this error on 2 machines, clean 2.6.9 without patches builts 
correctly. Any clues?

TIA

Ming-Wei

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