mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 00:42:16 +00:00
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
|
|
* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
|
|
* Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004
|
|
*/
|
|
#ifndef _ASM_MMZONE_H_
|
|
#define _ASM_MMZONE_H_
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/page.h>
|
|
#include <mmzone.h>
|
|
|
|
#ifdef CONFIG_DISCONTIGMEM
|
|
|
|
#define kvaddr_to_nid(kvaddr) pa_to_nid(__pa(kvaddr))
|
|
#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT)
|
|
|
|
#define pfn_valid(pfn) \
|
|
({ \
|
|
unsigned long __pfn = (pfn); \
|
|
int __n = pfn_to_nid(__pfn); \
|
|
((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \
|
|
NODE_DATA(__n)->node_spanned_pages) : 0);\
|
|
})
|
|
|
|
#define pfn_to_page(pfn) \
|
|
({ \
|
|
unsigned long __pfn = (pfn); \
|
|
pg_data_t *__pg = NODE_DATA(pfn_to_nid(__pfn)); \
|
|
__pg->node_mem_map + (__pfn - __pg->node_start_pfn); \
|
|
})
|
|
|
|
#define page_to_pfn(p) \
|
|
({ \
|
|
struct page *__p = (p); \
|
|
struct zone *__z = page_zone(__p); \
|
|
((__p - __z->zone_mem_map) + __z->zone_start_pfn); \
|
|
})
|
|
|
|
/* XXX: FIXME -- wli */
|
|
#define kern_addr_valid(addr) (0)
|
|
|
|
#endif /* CONFIG_DISCONTIGMEM */
|
|
|
|
#endif /* _ASM_MMZONE_H_ */
|