From 25395cd2f8cb24ce6a5ce073c898acfb091e06cf Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 24 Nov 2020 23:05:45 +1100 Subject: [PATCH] powerpc: Make NUMA depend on SMP Our Kconfig allows NUMA to be enabled without SMP, but none of our defconfigs use that combination. This means it can easily be broken inadvertently by code changes, which has happened recently. Although it's theoretically possible to have a machine with a single CPU and multiple memory nodes, I can't think of any real systems where that's the case. Even so if such a system exists, it can just run an SMP kernel anyway. So to avoid the need to add extra #ifdefs and/or build breaks, make NUMA depend on SMP. Reported-by: kernel test robot Reported-by: Randy Dunlap Signed-off-by: Michael Ellerman Reviewed-by: Srikar Dronamraju Reviewed-by: Randy Dunlap Link: https://lore.kernel.org/r/20201124120547.1940635-1-mpe@ellerman.id.au --- arch/powerpc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e9f13fe08492..a22db3db6b96 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -660,7 +660,7 @@ config IRQ_ALL_CPUS config NUMA bool "NUMA support" - depends on PPC64 + depends on PPC64 && SMP default y if SMP && PPC_PSERIES config NODES_SHIFT