Re: [cpuops cmpxchg V2 3/5] irq_work: Use per cpu atomics insteadof regular atomics

[Tejun Heo]

On 12/14/2010 05:28 PM, Christoph Lameter wrote:
> The irq work queue is a per cpu object and it is sufficient for
> synchronization if per cpu atomics are used. Doing so simplifies
> the code and reduces the overhead of the code.
> 
> Before:
> 
> christoph@xxxxxxxxx$ size kernel/irq_work.o
>    text	   data	    bss	    dec	    hex	filename
>     451	      8	      1	    460	    1cc	kernel/irq_work.o
> 
> After:
> 
> christoph@xxxxxxxxx$ size kernel/irq_work.o 
>    text	   data	    bss	    dec	    hex	filename
>     438	      8	      1	    447	    1bf	kernel/irq_work.o
> 
> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>

Applied 3 and 4 to percpu#for-2.6.38.

Thank you.

-- 
tejun
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