Re: [PATCH] UV: cpu_relax in uv_wait_completion

[Ingo Molnar]

* Cliff Wickman <cpw@xxxxxxx> wrote:

> 
> From: Cliff Wickman <cpw@xxxxxxx>
> 
> The function uv_wait_completion() spins on reads of a memory-mapped
> register, waiting for completion of BAU hardware replies.
> It should call "cpu_relax()" between those reads to improve performance
> on hyperthreaded configurations.
> 
> Signed-off-by: Cliff Wickman <cpw@xxxxxxx>
> Acked-by: Jack Steiner <steiner@xxxxxxx>
> 
> ---
>  arch/x86/kernel/tlb_uv.c |    1 +
>  1 file changed, 1 insertion(+)

applied to tip/x86/urgent, thanks Cliff!

	Ingo
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