On Tue, 2011-09-20 at 10:19 +1000, Anton Blanchard wrote:
> Hi Peter,
>
> > On Mon, 2011-07-25 at 12:33 +1000, Anton Blanchard wrote:
> > > Here are a set of ppc64 scheduler fixes that help with some
> > > multi node performance issues.
> >
> > They look fine to me. I'll probably ping you when I'll rip out all
> > that SD_NODES_PER_DOMAIN crap for good, but until then I'm fine with
> > you fiddling it for ppc64.
> >
> > Acked-by: Peter Zijlstra <a.p.zijls...@chello.nl>
>
> Are you OK if Ben takes this, or would you prefer to send it via the
> scheduler tree?
I've already put it in my next branch that I'll stick on github later
today hopefully :-)
Cheers,
Ben.
> Anton
> --
>
> [2/5] sched: Allow SD_NODES_PER_DOMAIN to be overridden
>
> We want to override the default value of SD_NODES_PER_DOMAIN on ppc64,
> so move it into linux/topology.h.
>
> Signed-off-by: Anton Blanchard <an...@samba.org>
>
> ---
>
> Index: linux-2.6-work/include/linux/topology.h
> ===================================================================
> --- linux-2.6-work.orig/include/linux/topology.h 2011-07-25
> 11:20:02.588717796 +1000
> +++ linux-2.6-work/include/linux/topology.h 2011-07-25 11:26:50.616468376
> +1000
> @@ -201,6 +201,10 @@ int arch_update_cpu_topology(void);
> .balance_interval = 64, \
> }
>
> +#ifndef SD_NODES_PER_DOMAIN
> +#define SD_NODES_PER_DOMAIN 16
> +#endif
> +
> #ifdef CONFIG_SCHED_BOOK
> #ifndef SD_BOOK_INIT
> #error Please define an appropriate SD_BOOK_INIT in include/asm/topology.h!!!
> Index: linux-2.6-work/kernel/sched.c
> ===================================================================
> --- linux-2.6-work.orig/kernel/sched.c 2011-07-25 11:20:09.538850173
> +1000
> +++ linux-2.6-work/kernel/sched.c 2011-07-25 11:26:50.626468565 +1000
> @@ -6938,8 +6938,6 @@ static int __init isolated_cpu_setup(cha
>
> __setup("isolcpus=", isolated_cpu_setup);
>
> -#define SD_NODES_PER_DOMAIN 16
> -
> #ifdef CONFIG_NUMA
>
> /**
> --
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