Messages in this thread |  | | Date | Wed, 8 Aug 2018 11:30:16 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH] sched/topology: Use Identity node only if required |
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On Wed, Aug 08, 2018 at 10:43:02AM +0200, Peter Zijlstra wrote: > On Wed, Aug 08, 2018 at 01:19:42AM -0700, Srikar Dronamraju wrote:
> > We could fix the numa topology to be NUMA_DIRECT for 2 node machines, by > > checking if sched_domains_numa_levels == 2, but then I dont know what it > > means for a system that has only NODE but not NUMA level. > > You have a point there; I think we should not have added the NODE thing > to sched_domains_numa_level, let me see if we can fix that sanely.
Hurm,. looking this over I don't see anything better than changing that NUMA_DIRECT test to <= 2.
But as the comment says, DIRECT means: all nodes are directly connected, or not a NUMA system. A system with a single node is not a NUMA system and would thus qualify.
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