57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/* 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_64_MMZONE_H
|
|
#define _ASM_X86_64_MMZONE_H 1
|
|
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
#define VIRTUAL_BUG_ON(x)
|
|
|
|
#include <asm/smp.h>
|
|
|
|
/* Simple perfect hash to map physical addresses to node numbers */
|
|
struct memnode {
|
|
int shift;
|
|
unsigned int mapsize;
|
|
u8 *map;
|
|
u8 embedded_map[64-16];
|
|
} ____cacheline_aligned; /* total size = 64 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);
|
|
VIRTUAL_BUG_ON((addr >> memnode_shift) >= memnodemapsize);
|
|
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)
|
|
|
|
#ifdef CONFIG_DISCONTIGMEM
|
|
#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
|
|
|
|
extern int pfn_valid(unsigned long pfn);
|
|
#endif
|
|
|
|
#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
|