On Wed, 22 Apr 2015 18:07:50 +0100 Mel Gorman <mgorman@xxxxxxx> wrote: > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -32,6 +32,7 @@ config X86 > select HAVE_UNSTABLE_SCHED_CLOCK > select ARCH_SUPPORTS_NUMA_BALANCING if X86_64 > select ARCH_SUPPORTS_INT128 if X86_64 > + select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT if X86_64 && NUMA Put this in the "config X86_64" section and skip the "X86_64 &&"? Can we omit the whole defer_meminit= thing and permanently enable the feature? That's simpler, provides better test coverage and is, we hope, faster. And can this be used on non-NUMA? Presumably that won't speed things up any if we're bandwidth limited but again it's simpler and provides better coverage. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>