C++ (Cpp) io_remap_pte_range示例

示例#1

文件： generic_32.c 项目： Medvedroid/OT_903D-kernel-2.6.35.7

static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size,
	unsigned long offset, pgprot_t prot, int space)
{
	unsigned long end;

	address &= ~PGDIR_MASK;
	end = address + size;
	if (end > PGDIR_SIZE)
		end = PGDIR_SIZE;
	offset -= address;
	do {
		pte_t * pte = pte_alloc_map(mm, pmd, address);
		if (!pte)
			return -ENOMEM;
		io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space);
		address = (address + PMD_SIZE) & PMD_MASK;
		pmd++;
	} while (address < end);
	return 0;
}

示例#2

文件： generic.c 项目： dmgerman/linux-pre-history

static inline int io_remap_pmd_range(pmd_t * pmd, unsigned long address, unsigned long size,
	unsigned long offset, pgprot_t prot, int space)
{
	unsigned long end;

	address &= ~PGDIR_MASK;
	end = address + size;
	if (end > PGDIR_SIZE)
		end = PGDIR_SIZE;
	offset -= address;
	do {
		pte_t * pte = pte_alloc(pmd, address);
		if (!pte)
			return -ENOMEM;
		spin_lock(&current->mm->page_table_lock);
		io_remap_pte_range(pte, address, end - address, address + offset, prot, space);
		spin_unlock(&current->mm->page_table_lock);
		address = (address + PMD_SIZE) & PMD_MASK;
		pmd++;
	} while (address < end);
	return 0;
}