Re: [patch] sched: fix sd_parent_degenerate on non-numa smp machine

[Ingo Molnar]

* Ken Chen <kenchen@xxxxxxxxxx> wrote:

> The addition of SD_SERIALIZE flag added to SD_NODE_INIT prevented top level
> dummy numa sched_domain to be properly degenerated on non-numa smp machine.
> The reason is that in sd_parent_degenerate(), it found that the child and
> parent does not have comon sched_domain flags due to SD_SERIALIZE.  However,
> for non-numa smp box, the top level is a dummy with a single sched_group.
> 
> Filter out SD_SERIALIZE if it is on non-numa machine to properly degenerate
> top level node sched_domain.  this will cut back some of the sd domain walk
> in the load balancer code.
> 
> Signed-off-by: Ken Chen <kenchen@xxxxxxxxxx>

applied to tip/sched/core, thanks Ken!

	Ingo
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