mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 01:50:54 +07:00
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
|
/*
|
||
|
|
* Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
|
||
|
|
*/
|
||
|
|
#ifndef _LINUX_BOOTMEM_H
|
||
|
|
#define _LINUX_BOOTMEM_H
|
||
|
|
|
||
|
|
#include <asm/pgtable.h>
|
||
|
|
#include <asm/dma.h>
|
||
|
|
#include <linux/cache.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/mmzone.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* simple boot-time physical memory area allocator.
|
||
|
|
*/
|
||
|
|
|
||
|
|
extern unsigned long max_low_pfn;
|
||
|
|
extern unsigned long min_low_pfn;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* highest page
|
||
|
|
*/
|
||
|
|
extern unsigned long max_pfn;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* node_bootmem_map is a map pointer - the bits represent all physical
|
||
|
|
* memory pages (including holes) on the node.
|
||
|
|
*/
|
||
|
|
typedef struct bootmem_data {
|
||
|
|
unsigned long node_boot_start;
|
||
|
|
unsigned long node_low_pfn;
|
||
|
|
void *node_bootmem_map;
|
||
|
|
unsigned long last_offset;
|
||
|
|
unsigned long last_pos;
|
||
|
|
unsigned long last_success; /* Previous allocation point. To speed
|
||
|
|
* up searching */
|
||
|
|
} bootmem_data_t;
|
||
|
|
|
||
|
|
extern unsigned long __init bootmem_bootmap_pages (unsigned long);
|
||
|
|
extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend);
|
||
|
|
extern void __init free_bootmem (unsigned long addr, unsigned long size);
|
||
|
|
extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal);
|
||
|
|
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
|
||
|
|
extern void __init reserve_bootmem (unsigned long addr, unsigned long size);
|
||
|
|
#define alloc_bootmem(x) \
|
||
|
|
__alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
|
||
|
|
#define alloc_bootmem_low(x) \
|
||
|
|
__alloc_bootmem((x), SMP_CACHE_BYTES, 0)
|
||
|
|
#define alloc_bootmem_pages(x) \
|
||
|
|
__alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
|
||
|
|
#define alloc_bootmem_low_pages(x) \
|
||
|
|
__alloc_bootmem((x), PAGE_SIZE, 0)
|
||
|
|
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
|
||
|
|
extern unsigned long __init free_all_bootmem (void);
|
||
|
|
|
||
|
|
extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn);
|
||
|
|
extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size);
|
||
|
|
extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size);
|
||
|
|
extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat);
|
||
|
|
extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal);
|
||
|
|
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
|
||
|
|
#define alloc_bootmem_node(pgdat, x) \
|
||
|
|
__alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
|
||
|
|
#define alloc_bootmem_pages_node(pgdat, x) \
|
||
|
|
__alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
|
||
|
|
#define alloc_bootmem_low_pages_node(pgdat, x) \
|
||
|
|
__alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0)
|
||
|
|
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
|
||
|
|
|
||
|
|
extern unsigned long __initdata nr_kernel_pages;
|
||
|
|
extern unsigned long __initdata nr_all_pages;
|
||
|
|
|
||
|
|
extern void *__init alloc_large_system_hash(const char *tablename,
|
||
|
|
unsigned long bucketsize,
|
||
|
|
unsigned long numentries,
|
||
|
|
int scale,
|
||
|
|
int flags,
|
||
|
|
unsigned int *_hash_shift,
|
||
|
|
unsigned int *_hash_mask,
|
||
|
|
unsigned long limit);
|
||
|
|
|
||
|
|
#define HASH_HIGHMEM 0x00000001 /* Consider highmem? */
|
||
|
|
#define HASH_EARLY 0x00000002 /* Allocating during early boot? */
|
||
|
|
|
||
|
|
/* Only NUMA needs hash distribution.
|
||
|
|
* IA64 is known to have sufficient vmalloc space.
|
||
|
|
*/
|
||
|
|
#if defined(CONFIG_NUMA) && defined(CONFIG_IA64)
|
||
|
|
#define HASHDIST_DEFAULT 1
|
||
|
|
#else
|
||
|
|
#define HASHDIST_DEFAULT 0
|
||
|
|
#endif
|
||
|
|
extern int __initdata hashdist; /* Distribute hashes across NUMA nodes? */
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _LINUX_BOOTMEM_H */
|