Re: [patch] add optimized generic percpu accessors

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> wrote:

> Tejun, could you please also add the patch below to your lineup too?
> 
> It is an optimization and a cleanup, and adds the following new generic 
> percpu methods:
> 
>   percpu_read()
>   percpu_write()
>   percpu_add()
>   percpu_sub()
>   percpu_or() 
>   percpu_xor()
> 
> and implements support for them on x86. (other architectures will fall 
> back to a default implementation)

btw., this patch means that we can move Brian's original PDA cleanups 
fully and without kernel size bloat: instead of pda_read() we can use 
percpu_read(), and not bloat the kernel at all.

and thus the pda ops can go away completely.

	Ingo
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