Re: modules, add_kallsyms() && DEFINE_PER_CPU

[Namhyung Kim]

Hi Masami,

On Wed, 27 Nov 2013 11:23:43 +0900, Masami Hiramatsu wrote:
> (2013/11/27 2:50), Oleg Nesterov wrote:
>> On 11/26, Oleg Nesterov wrote:
>>>
>>> Note: this doesn't work for modules, but module's per-cpu data is
>>> not visible for kallsyms_lookup_name() anyway.
>> 
>> Rusty, I am just curious if it makes sense to change this or not...
>> 
>> But DEFINE_PER_CPU'ed symbols are ignored by add_kallsyms(). I guess
>> this is because is_core_symbol() requires "sh_flags & SHF_ALLOC".
>> And probably because of INIT_OFFSET_MASK.
>
> Oleg, I think you can do it by using is_module_percpu_address(). :)

It seems the function only works for a translated address like
is_kernel_percpu_address() does.  But we want to check a not-yet-
translated symbol address, right?

Thanks,
Namhyung
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