x86: mm: enable deferred struct page initialisation on x86-64

Subject says it all.  Other architectures may enable on a case-by-case
basis after auditing early_pfn_to_nid and testing.

Signed-off-by: Mel Gorman <[email protected]>
Tested-by: Nate Zimmer <[email protected]>
Tested-by: Waiman Long <[email protected]>
Tested-by: Daniel J Blueman <[email protected]>
Acked-by: Pekka Enberg <[email protected]>
Cc: Robin Holt <[email protected]>
Cc: Nate Zimmer <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: Scott Norton <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d05a42357ef0f5d02e27e630292998d0eba019b2..47365c7b9f47b0f15cf00a2eae901ed0cbc5474e 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -34,6 +34,7 @@ config X86
        select ARCH_MIGHT_HAVE_PC_PARPORT
        select ARCH_MIGHT_HAVE_PC_SERIO
        select ARCH_SUPPORTS_ATOMIC_RMW
+       select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
        select ARCH_SUPPORTS_INT128             if X86_64
        select ARCH_SUPPORTS_NUMA_BALANCING     if X86_64
        select ARCH_USE_BUILTIN_BSWAP