Re: [lxc-devel] Memory Resources

[Daniel Lezcano <daniel.lezcano-GANU6spQydw@public.gmane.org>]

Krzysztof Taraszka wrote:
> 2009/8/24 Daniel Lezcano <daniel.lezcano-GANU6spQydw@public.gmane.org>
> 
>>
>> [ snip ]
>>
>>>  i think that /proc/meminfo should be mounted after /proc . why? i think
>>>>> that, because mounting /proc may override /proc/meminfo
>>>>> Am I right? :)
>>>>>
>>>>>
>>>>>
>>>>>
>>>> Ha ! haha ! arrgh ! no way ! You are right :/
>>>>
>>>>
>>>>
>>> Hehe ;)
>>>
>>>
>>>
>>>> In the case of application container, lxc mounts /proc but in the case of
>>>> system container it is the system who do that so after the /proc/meminfo
>>>> has
>>>> been mounted.
>>>>
>>>> Maybe we can look at modifying fs/proc/meminfo.c instead. Let me do a
>>>> small
>>>> patch for the kernel...
>>>>
>>>>
>>>>
>>>>
>>> Okey. I am waiting for your patch :)
>>>
>> Quick and dirty patch but at least working. It is no synced on the latest
>> kernel version.
>> I do not really like to touch fs/proc/meminfo.c but it's an example here.
>>
> 
> 
> Hi Daniel,
> 
> I tried to compile my kernel tree (2.6.30.5) with your patch using gcc-4.4,
> gcc-4.3 and gcc-4.2 and i got this error on every gcc when linking kernel:
> 
> mm/built-in.o: In function `mem_cgroup_info':
> (.text+0x27651): undefined reference to `__udivdi3'
> mm/built-in.o: In function `mem_cgroup_info':
> (.text+0x27678): undefined reference to `__udivdi3'
> mm/built-in.o: In function `mem_cgroup_info':
> (.text+0x276b0): undefined reference to `__udivdi3'
> mm/built-in.o: In function `mem_cgroup_info':
> (.text+0x276dd): undefined reference to `__udivdi3'
> make: *** [.tmp_vmlinux1] Error 1
> 
> this can be gcc based error. What kernel and gcc did you use for compile
> your kernel?

I used a 2.6.30 kernel and
gcc (GCC) 4.3.0 20080428 (Red Hat 4.3.0-8)
Compiled on a x86_64 host.

Do you have any warning at the compile time ?