powerpc/mm: Rename hugetlb-radix.h to hugetlb.h

[linux-2.6-block.git] / arch / powerpc / include / asm / book3s / 64 / hugetlb.h

diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb.h b/arch/powerpc/include/asm/book3s/64/hugetlb.h
new file mode 100644 (file)
index 0000000..4992680
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/hugetlb.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_H
+#define _ASM_POWERPC_BOOK3S_64_HUGETLB_H
+/*
+ * For radix we want generic code to handle hugetlb. But then if we want
+ * both hash and radix to be enabled together we need to workaround the
+ * limitations.
+ */
+void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+extern unsigned long
+radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+                               unsigned long len, unsigned long pgoff,
+                               unsigned long flags);
+
+static inline int hstate_get_psize(struct hstate *hstate)
+{
+       unsigned long shift;
+
+       shift = huge_page_shift(hstate);
+       if (shift == mmu_psize_defs[MMU_PAGE_2M].shift)
+               return MMU_PAGE_2M;
+       else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift)
+               return MMU_PAGE_1G;
+       else {
+               WARN(1, "Wrong huge page shift\n");
+               return mmu_virtual_psize;
+       }
+}
+#endif