mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
1.9 KiB
80 lines
1.9 KiB
/* |
|
* This file is subject to the terms and conditions of the GNU General Public |
|
* License. See the file "COPYING" in the main directory of this archive |
|
* for more details. |
|
* |
|
* Copyright (C) 2008, 2009 Cavium Networks, Inc. |
|
*/ |
|
|
|
#ifndef __ASM_HUGETLB_H |
|
#define __ASM_HUGETLB_H |
|
|
|
#include <asm/page.h> |
|
|
|
#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE |
|
static inline int prepare_hugepage_range(struct file *file, |
|
unsigned long addr, |
|
unsigned long len) |
|
{ |
|
unsigned long task_size = STACK_TOP; |
|
struct hstate *h = hstate_file(file); |
|
|
|
if (len & ~huge_page_mask(h)) |
|
return -EINVAL; |
|
if (addr & ~huge_page_mask(h)) |
|
return -EINVAL; |
|
if (len > task_size) |
|
return -ENOMEM; |
|
if (task_size - len < addr) |
|
return -EINVAL; |
|
return 0; |
|
} |
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR |
|
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, |
|
unsigned long addr, pte_t *ptep) |
|
{ |
|
pte_t clear; |
|
pte_t pte = *ptep; |
|
|
|
pte_val(clear) = (unsigned long)invalid_pte_table; |
|
set_pte_at(mm, addr, ptep, clear); |
|
return pte; |
|
} |
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH |
|
static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
|
unsigned long addr, pte_t *ptep) |
|
{ |
|
flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma))); |
|
} |
|
|
|
#define __HAVE_ARCH_HUGE_PTE_NONE |
|
static inline int huge_pte_none(pte_t pte) |
|
{ |
|
unsigned long val = pte_val(pte) & ~_PAGE_GLOBAL; |
|
return !val || (val == (unsigned long)invalid_pte_table); |
|
} |
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS |
|
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
|
unsigned long addr, |
|
pte_t *ptep, pte_t pte, |
|
int dirty) |
|
{ |
|
int changed = !pte_same(*ptep, pte); |
|
|
|
if (changed) { |
|
set_pte_at(vma->vm_mm, addr, ptep, pte); |
|
/* |
|
* There could be some standard sized pages in there, |
|
* get them all. |
|
*/ |
|
flush_tlb_range(vma, addr, addr + HPAGE_SIZE); |
|
} |
|
return changed; |
|
} |
|
|
|
#include <asm-generic/hugetlb.h> |
|
|
|
#endif /* __ASM_HUGETLB_H */
|
|
|