From 052936080c8fb2f791103995b21bd4018c8df886 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 1 Apr 2011 11:15:12 +0200 Subject: x86-64, NUMA: Remove custom phys_to_nid() implementation phys_to_nid() maps physical address to NUMA node id. This is implemented by building perfect hash in compute_hash_shift() during initialization. However, with SPARSE memory model, the nid is encoded in page flags. The perfect hash implementation was for DISCONTIG memory model which got removed years ago by b263295dbf (x86: 64-bit, make sparsemem vmemmap the only memory model). So, the perfect hash ends up being used only during initialization when the core SPARSE code already provides perfectly acceptable generic early_pfn_to_nid() implementation. Drop phys_to_nid() and use the generic ealry_pfn_to_nid() instead. Signed-off-by: Tejun Heo Reviewed-by: Christoph Lameter Acked-by: Yinghai Lu Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner --- arch/x86/Kconfig | 4 ---- 1 file changed, 4 deletions(-) (limited to 'arch/x86/Kconfig') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index cc6c53a..b034814 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1703,10 +1703,6 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y depends on MEMORY_HOTPLUG -config HAVE_ARCH_EARLY_PFN_TO_NID - def_bool X86_64 - depends on NUMA - config USE_PERCPU_NUMA_NODE_ID def_bool y depends on NUMA -- cgit v1.1