From bb8985586b7a906e116db835c64773b7a7d51663 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 17 Aug 2008 21:05:42 -0400 Subject: x86, um: ... and asm-x86 move Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/mmzone_64.h | 51 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 arch/x86/include/asm/mmzone_64.h (limited to 'arch/x86/include/asm/mmzone_64.h') diff --git a/arch/x86/include/asm/mmzone_64.h b/arch/x86/include/asm/mmzone_64.h new file mode 100644 index 00000000000..6480f3333b2 --- /dev/null +++ b/arch/x86/include/asm/mmzone_64.h @@ -0,0 +1,51 @@ +/* K8 NUMA support */ +/* Copyright 2002,2003 by Andi Kleen, SuSE Labs */ +/* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */ +#ifndef ASM_X86__MMZONE_64_H +#define ASM_X86__MMZONE_64_H + + +#ifdef CONFIG_NUMA + +#include + +#include + +/* Simple perfect hash to map physical addresses to node numbers */ +struct memnode { + int shift; + unsigned int mapsize; + s16 *map; + s16 embedded_map[64 - 8]; +} ____cacheline_aligned; /* total size = 128 bytes */ +extern struct memnode memnode; +#define memnode_shift memnode.shift +#define memnodemap memnode.map +#define memnodemapsize memnode.mapsize + +extern struct pglist_data *node_data[]; + +static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) +{ + unsigned nid; + VIRTUAL_BUG_ON(!memnodemap); + nid = memnodemap[addr >> memnode_shift]; + VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]); + return nid; +} + +#define NODE_DATA(nid) (node_data[nid]) + +#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) +#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \ + NODE_DATA(nid)->node_spanned_pages) + +extern int early_pfn_to_nid(unsigned long pfn); + +#ifdef CONFIG_NUMA_EMU +#define FAKE_NODE_MIN_SIZE (64 * 1024 * 1024) +#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) +#endif + +#endif +#endif /* ASM_X86__MMZONE_64_H */ -- cgit v1.2.3