check in the original version of dde linux26.

1 files changed, 291 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/include/linux/hugetlb.h b/libdde_linux26/contrib/include/linux/hugetlb.h
new file mode 100644
index 00000000..03be7f29
--- /dev/null
+++ b/libdde_linux26/contrib/include/linux/hugetlb.h
@@ -0,0 +1,291 @@
+#ifndef _LINUX_HUGETLB_H
+#define _LINUX_HUGETLB_H
+
+#include <linux/fs.h>
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#include <linux/mempolicy.h>
+#include <linux/shm.h>
+#include <asm/tlbflush.h>
+
+struct ctl_table;
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+	return vma->vm_flags & VM_HUGETLB;
+}
+
+void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
+int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int hugetlb_overcommit_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int hugetlb_treat_movable_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
+int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int, int);
+void unmap_hugepage_range(struct vm_area_struct *,
+			unsigned long, unsigned long, struct page *);
+void __unmap_hugepage_range(struct vm_area_struct *,
+			unsigned long, unsigned long, struct page *);
+int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
+void hugetlb_report_meminfo(struct seq_file *);
+int hugetlb_report_node_meminfo(int, char *);
+unsigned long hugetlb_total_pages(void);
+int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
+			unsigned long address, int write_access);
+int hugetlb_reserve_pages(struct inode *inode, long from, long to,
+						struct vm_area_struct *vma,
+						int acctflags);
+void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed);
+
+extern unsigned long hugepages_treat_as_movable;
+extern const unsigned long hugetlb_zero, hugetlb_infinity;
+extern int sysctl_hugetlb_shm_group;
+extern struct list_head huge_boot_pages;
+
+/* arch callbacks */
+
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+			unsigned long addr, unsigned long sz);
+pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr);
+int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep);
+struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address,
+			      int write);
+struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
+				pmd_t *pmd, int write);
+struct page *follow_huge_pud(struct mm_struct *mm, unsigned long address,
+				pud_t *pud, int write);
+int pmd_huge(pmd_t pmd);
+int pud_huge(pud_t pmd);
+void hugetlb_change_protection(struct vm_area_struct *vma,
+		unsigned long address, unsigned long end, pgprot_t newprot);
+
+#else /* !CONFIG_HUGETLB_PAGE */
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+	return 0;
+}
+
+static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
+{
+}
+
+static inline unsigned long hugetlb_total_pages(void)
+{
+	return 0;
+}
+
+#define follow_hugetlb_page(m,v,p,vs,a,b,i,w)	({ BUG(); 0; })
+#define follow_huge_addr(mm, addr, write)	ERR_PTR(-EINVAL)
+#define copy_hugetlb_page_range(src, dst, vma)	({ BUG(); 0; })
+#define hugetlb_prefault(mapping, vma)		({ BUG(); 0; })
+#define unmap_hugepage_range(vma, start, end, page)	BUG()
+static inline void hugetlb_report_meminfo(struct seq_file *m)
+{
+}
+#define hugetlb_report_node_meminfo(n, buf)	0
+#define follow_huge_pmd(mm, addr, pmd, write)	NULL
+#define follow_huge_pud(mm, addr, pud, write)	NULL
+#define prepare_hugepage_range(file, addr, len)	(-EINVAL)
+#define pmd_huge(x)	0
+#define pud_huge(x)	0
+#define is_hugepage_only_range(mm, addr, len)	0
+#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
+#define hugetlb_fault(mm, vma, addr, write)	({ BUG(); 0; })
+
+#define hugetlb_change_protection(vma, address, end, newprot)
+
+#ifndef HPAGE_MASK
+#define HPAGE_MASK	PAGE_MASK		/* Keep the compiler happy */
+#define HPAGE_SIZE	PAGE_SIZE
+#endif
+
+#endif /* !CONFIG_HUGETLB_PAGE */
+
+#ifdef CONFIG_HUGETLBFS
+struct hugetlbfs_config {
+	uid_t   uid;
+	gid_t   gid;
+	umode_t mode;
+	long	nr_blocks;
+	long	nr_inodes;
+	struct hstate *hstate;
+};
+
+struct hugetlbfs_sb_info {
+	long	max_blocks;   /* blocks allowed */
+	long	free_blocks;  /* blocks free */
+	long	max_inodes;   /* inodes allowed */
+	long	free_inodes;  /* inodes free */
+	spinlock_t	stat_lock;
+	struct hstate *hstate;
+};
+
+
+struct hugetlbfs_inode_info {
+	struct shared_policy policy;
+	struct inode vfs_inode;
+};
+
+static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode)
+{
+	return container_of(inode, struct hugetlbfs_inode_info, vfs_inode);
+}
+
+static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb)
+{
+	return sb->s_fs_info;
+}
+
+extern const struct file_operations hugetlbfs_file_operations;
+extern struct vm_operations_struct hugetlb_vm_ops;
+struct file *hugetlb_file_setup(const char *name, size_t, int);
+int hugetlb_get_quota(struct address_space *mapping, long delta);
+void hugetlb_put_quota(struct address_space *mapping, long delta);
+
+static inline int is_file_hugepages(struct file *file)
+{
+	if (file->f_op == &hugetlbfs_file_operations)
+		return 1;
+	if (is_file_shm_hugepages(file))
+		return 1;
+
+	return 0;
+}
+
+static inline void set_file_hugepages(struct file *file)
+{
+	file->f_op = &hugetlbfs_file_operations;
+}
+#else /* !CONFIG_HUGETLBFS */
+
+#define is_file_hugepages(file)			0
+#define set_file_hugepages(file)		BUG()
+#define hugetlb_file_setup(name,size,acctflag)	ERR_PTR(-ENOSYS)
+
+#endif /* !CONFIG_HUGETLBFS */
+
+#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
+unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+					unsigned long len, unsigned long pgoff,
+					unsigned long flags);
+#endif /* HAVE_ARCH_HUGETLB_UNMAPPED_AREA */
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#define HSTATE_NAME_LEN 32
+/* Defines one hugetlb page size */
+struct hstate {
+	int hugetlb_next_nid;
+	unsigned int order;
+	unsigned long mask;
+	unsigned long max_huge_pages;
+	unsigned long nr_huge_pages;
+	unsigned long free_huge_pages;
+	unsigned long resv_huge_pages;
+	unsigned long surplus_huge_pages;
+	unsigned long nr_overcommit_huge_pages;
+	struct list_head hugepage_freelists[MAX_NUMNODES];
+	unsigned int nr_huge_pages_node[MAX_NUMNODES];
+	unsigned int free_huge_pages_node[MAX_NUMNODES];
+	unsigned int surplus_huge_pages_node[MAX_NUMNODES];
+	char name[HSTATE_NAME_LEN];
+};
+
+struct huge_bootmem_page {
+	struct list_head list;
+	struct hstate *hstate;
+};
+
+/* arch callback */
+int __init alloc_bootmem_huge_page(struct hstate *h);
+
+void __init hugetlb_add_hstate(unsigned order);
+struct hstate *size_to_hstate(unsigned long size);
+
+#ifndef HUGE_MAX_HSTATE
+#define HUGE_MAX_HSTATE 1
+#endif
+
+extern struct hstate hstates[HUGE_MAX_HSTATE];
+extern unsigned int default_hstate_idx;
+
+#define default_hstate (hstates[default_hstate_idx])
+
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+	struct hugetlbfs_sb_info *hsb;
+	hsb = HUGETLBFS_SB(i->i_sb);
+	return hsb->hstate;
+}
+
+static inline struct hstate *hstate_file(struct file *f)
+{
+	return hstate_inode(f->f_dentry->d_inode);
+}
+
+static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
+{
+	return hstate_file(vma->vm_file);
+}
+
+static inline unsigned long huge_page_size(struct hstate *h)
+{
+	return (unsigned long)PAGE_SIZE << h->order;
+}
+
+extern unsigned long vma_kernel_pagesize(struct vm_area_struct *vma);
+
+extern unsigned long vma_mmu_pagesize(struct vm_area_struct *vma);
+
+static inline unsigned long huge_page_mask(struct hstate *h)
+{
+	return h->mask;
+}
+
+static inline unsigned int huge_page_order(struct hstate *h)
+{
+	return h->order;
+}
+
+static inline unsigned huge_page_shift(struct hstate *h)
+{
+	return h->order + PAGE_SHIFT;
+}
+
+static inline unsigned int pages_per_huge_page(struct hstate *h)
+{
+	return 1 << h->order;
+}
+
+static inline unsigned int blocks_per_huge_page(struct hstate *h)
+{
+	return huge_page_size(h) / 512;
+}
+
+#include <asm/hugetlb.h>
+
+static inline struct hstate *page_hstate(struct page *page)
+{
+	return size_to_hstate(PAGE_SIZE << compound_order(page));
+}
+
+#else
+struct hstate {};
+#define alloc_bootmem_huge_page(h) NULL
+#define hstate_file(f) NULL
+#define hstate_vma(v) NULL
+#define hstate_inode(i) NULL
+#define huge_page_size(h) PAGE_SIZE
+#define huge_page_mask(h) PAGE_MASK
+#define vma_kernel_pagesize(v) PAGE_SIZE
+#define vma_mmu_pagesize(v) PAGE_SIZE
+#define huge_page_order(h) 0
+#define huge_page_shift(h) PAGE_SHIFT
+static inline unsigned int pages_per_huge_page(struct hstate *h)
+{
+	return 1;
+}
+#endif
+
+#endif /* _LINUX_HUGETLB_H */