Messages in this thread | | | Date | Wed, 24 Jun 2020 15:18:43 +0530 | From | Gautham R Shenoy <> | Subject | Re: [PATCH v5 1/3] powerpc/numa: Set numa_node for all possible cpus |
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On Wed, Jun 24, 2020 at 02:58:44PM +0530, Srikar Dronamraju wrote: > A Powerpc system with multiple possible nodes and with CONFIG_NUMA > enabled always used to have a node 0, even if node 0 does not any cpus > or memory attached to it. As per PAPR, node affinity of a cpu is only > available once its present / online. For all cpus that are possible but > not present, cpu_to_node() would point to node 0. > > To ensure a cpuless, memoryless dummy node is not online, powerpc need > to make sure all possible but not present cpu_to_node are set to a > proper node. > > Cc: linuxppc-dev@lists.ozlabs.org > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Cc: Michal Hocko <mhocko@suse.com> > Cc: Mel Gorman <mgorman@suse.de> > Cc: Vlastimil Babka <vbabka@suse.cz> > Cc: "Kirill A. Shutemov" <kirill@shutemov.name> > Cc: Christopher Lameter <cl@linux.com> > Cc: Michael Ellerman <mpe@ellerman.id.au> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Linus Torvalds <torvalds@linux-foundation.org> > Cc: Gautham R Shenoy <ego@linux.vnet.ibm.com> > Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> > Cc: David Hildenbrand <david@redhat.com> > Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
This looks good to me.
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
-- Thanks and Regards gautham.
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