On Wed, Apr 22, 2015 at 04:45:00PM -0700, Andrew Morton wrote:
On Wed, 22 Apr 2015 18:07:50 +0100 Mel Gorman<mgorman@xxxxxxx> wrote:Done.
--- a/arch/x86/KconfigPut this in the "config X86_64" section and skip the "X86_64&&"?
+++ 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
Can we omit the whole defer_meminit= thing and permanently enable theYes. The intent was to have a workaround if there were any failures like
feature? That's simpler, provides better test coverage and is, we
hope, faster.
Waiman's vmalloc failures in an earlier version but they are bugs that
should be fixed.
And can this be used on non-NUMA? Presumably that won't speed thingsNothing prevents it. There is less opportunity for parallelism but
up any if we're bandwidth limited but again it's simpler and provides
better coverage.
improving coverage is desirable.