Re: [PATCH] unbreak alpha percpu

[Tejun Heo <tj@kernel.org>]

Linus Torvalds wrote:
> 
> On Fri, 10 Apr 2009, Ivan Kokshaysky wrote:
>> Actually, all of this has been discussed on lkml; here is the latest
>> variant that makes everybody more or less happy, at least there are
>> no objections from percpu folks and Martin (similar fix should work
>> for s390 as well).
> 
> Is there any reason why this version of DEFINE_PER_CPU_SECTION wouldn't 
> work on _any_ architecture? IOW, do we even need the #ifdef's and 
> per-arch #define?

It should work for all archs but only alpha and s390 require __weak__
and other archs can use actual static or global definitions, but then
again we'll need to add the __per_cpu_multiple_def_ thing to make sure
no two static definitions clash anyway, so there isn't much point in
keeping things separate.

I was waiting for responses on the original thread.  Is everyone okay
with having the 'static per-cpu variables in different compile units
can't have the same name' restriction?

Thanks.

-- 
tejun