Messages in this thread | | | Date | Thu, 15 Jan 2009 18:57:35 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] UV: cpu_relax in uv_wait_completion |
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* Cliff Wickman <cpw@sgi.com> wrote:
> > From: Cliff Wickman <cpw@sgi.com> > > 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@sgi.com> > Acked-by: Jack Steiner <steiner@sgi.org> > > --- > arch/x86/kernel/tlb_uv.c | 1 + > 1 file changed, 1 insertion(+)
applied to tip/x86/urgent, thanks Cliff!
Ingo
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