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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 09:40:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 09:40:26 -0700
commitf8b71a3a92d69cb1c9c2162f9235d3dd550e4aa0 (patch)
treed0853186f33314a6e45903876d0e94d1619fcca9 /include/asm-sparc/hugetlb.h
parent42a77a1b8fe4fd78cf8d8fccbaac918bbe888192 (diff)
parente4f25060b87a627f5cda84b8134911d43c919458 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: (44 commits) sparc: Remove Sparc's asm-offsets for sclow.S sparc64: Update defconfig. sparc64: Add Niagara2 RNG driver. sparc64: Add missing hypervisor service group numbers. sparc64: Remove 4MB and 512K base page size options. sparc64: Convert to generic helpers for IPI function calls. sparc: Use new '%pS' infrastructure to print symbols. sparc32: fix init.c allnoconfig build error sparc64: Config category "Processor type and features" absent sparc: arch/sparc/kernel/apc.c to unlocked_ioctl sparc: join the remaining header files sparc: merge header files with trivial differences sparc: when header files are equal use asm-sparc version sparc: copy sparc64 specific files to asm-sparc sparc: Merge asm-sparc{,64}/asi.h sparc: export openprom.h to userspace sparc: Merge asm-sparc{,64}/types.h sparc: Merge asm-sparc{,64}/termios.h sparc: Merge asm-sparc{,64}/termbits.h sparc: Merge asm-sparc{,64}/setup.h ...
Diffstat (limited to 'include/asm-sparc/hugetlb.h')
-rw-r--r--include/asm-sparc/hugetlb.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/include/asm-sparc/hugetlb.h b/include/asm-sparc/hugetlb.h
new file mode 100644
index 000000000000..412af58926a0
--- /dev/null
+++ b/include/asm-sparc/hugetlb.h
@@ -0,0 +1,84 @@
+#ifndef _ASM_SPARC64_HUGETLB_H
+#define _ASM_SPARC64_HUGETLB_H
+
+#include <asm/page.h>
+
+
+void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte);
+
+pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep);
+
+void hugetlb_prefault_arch_hook(struct mm_struct *mm);
+
+static inline int is_hugepage_only_range(struct mm_struct *mm,
+ unsigned long addr,
+ unsigned long len) {
+ return 0;
+}
+
+/*
+ * If the arch doesn't supply something else, assume that hugepage
+ * size aligned regions are ok without further preparation.
+ */
+static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
+{
+ if (len & ~HPAGE_MASK)
+ return -EINVAL;
+ if (addr & ~HPAGE_MASK)
+ return -EINVAL;
+ return 0;
+}
+
+static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+ unsigned long addr, unsigned long end,
+ unsigned long floor,
+ unsigned long ceiling)
+{
+ free_pgd_range(tlb, addr, end, floor, ceiling);
+}
+
+static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+}
+
+static inline int huge_pte_none(pte_t pte)
+{
+ return pte_none(pte);
+}
+
+static inline pte_t huge_pte_wrprotect(pte_t pte)
+{
+ return pte_wrprotect(pte);
+}
+
+static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ ptep_set_wrprotect(mm, addr, ptep);
+}
+
+static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t pte, int dirty)
+{
+ return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+}
+
+static inline pte_t huge_ptep_get(pte_t *ptep)
+{
+ return *ptep;
+}
+
+static inline int arch_prepare_hugepage(struct page *page)
+{
+ return 0;
+}
+
+static inline void arch_release_hugepage(struct page *page)
+{
+}
+
+#endif /* _ASM_SPARC64_HUGETLB_H */