mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 02:40:54 +07:00
fd4fd5aac1
Someone mentioned that almost all the architectures used basically the same implementation of get_order. This patch consolidates them into asm-generic/page.h and includes that in the appropriate places. The exceptions are ia64 and ppc which have their own (presumably optimised) versions. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
#ifndef _CRIS_PAGE_H
|
|
#define _CRIS_PAGE_H
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/arch/page.h>
|
|
|
|
/* PAGE_SHIFT determines the page size */
|
|
#define PAGE_SHIFT 13
|
|
#ifndef __ASSEMBLY__
|
|
#define PAGE_SIZE (1UL << PAGE_SHIFT)
|
|
#else
|
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
|
#endif
|
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
|
|
#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
|
|
|
|
#define clear_user_page(page, vaddr, pg) clear_page(page)
|
|
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
|
|
|
|
#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
|
|
#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
|
|
|
|
/*
|
|
* These are used to make use of C type-checking..
|
|
*/
|
|
#ifndef __ASSEMBLY__
|
|
typedef struct { unsigned long pte; } pte_t;
|
|
typedef struct { unsigned long pgd; } pgd_t;
|
|
typedef struct { unsigned long pgprot; } pgprot_t;
|
|
#endif
|
|
|
|
#define pte_val(x) ((x).pte)
|
|
#define pgd_val(x) ((x).pgd)
|
|
#define pgprot_val(x) ((x).pgprot)
|
|
|
|
#define __pte(x) ((pte_t) { (x) } )
|
|
#define __pgd(x) ((pgd_t) { (x) } )
|
|
#define __pgprot(x) ((pgprot_t) { (x) } )
|
|
|
|
/* On CRIS the PFN numbers doesn't start at 0 so we have to compensate */
|
|
/* for that before indexing into the page table starting at mem_map */
|
|
#define pfn_to_page(pfn) (mem_map + ((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)))
|
|
#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + (PAGE_OFFSET >> PAGE_SHIFT))
|
|
#define pfn_valid(pfn) (((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)) < max_mapnr)
|
|
|
|
/* to index into the page map. our pages all start at physical addr PAGE_OFFSET so
|
|
* we can let the map start there. notice that we subtract PAGE_OFFSET because
|
|
* we start our mem_map there - in other ports they map mem_map physically and
|
|
* use __pa instead. in our system both the physical and virtual address of DRAM
|
|
* is too high to let mem_map start at 0, so we do it this way instead (similar
|
|
* to arm and m68k I think)
|
|
*/
|
|
|
|
#define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT))
|
|
#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)
|
|
#define virt_addr_valid(kaddr) pfn_valid((unsigned)(kaddr) >> PAGE_SHIFT)
|
|
|
|
/* convert a page (based on mem_map and forward) to a physical address
|
|
* do this by figuring out the virtual address and then use __pa
|
|
*/
|
|
|
|
#define page_to_phys(page) __pa((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
|
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#include <asm-generic/page.h>
|
|
|
|
#endif /* _CRIS_PAGE_H */
|
|
|