Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / m68k / include / asm / motorola_pgalloc.h

diff --git a/kernel/arch/m68k/include/asm/motorola_pgalloc.h b/kernel/arch/m68k/include/asm/motorola_pgalloc.h
new file mode 100644 (file)
index 0000000..24bcba4
--- /dev/null
+++ b/kernel/arch/m68k/include/asm/motorola_pgalloc.h
@@ -0,0 +1,113 @@
+#ifndef _MOTOROLA_PGALLOC_H
+#define _MOTOROLA_PGALLOC_H
+
+#include <asm/tlb.h>
+#include <asm/tlbflush.h>
+
+extern pmd_t *get_pointer_table(void);
+extern int free_pointer_table(pmd_t *);
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
+{
+       pte_t *pte;
+
+       pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+       if (pte) {
+               __flush_page_to_ram(pte);
+               flush_tlb_kernel_page(pte);
+               nocache_page(pte);
+       }
+
+       return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+       cache_page(pte);
+       free_page((unsigned long) pte);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+       struct page *page;
+       pte_t *pte;
+
+       page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
+       if(!page)
+               return NULL;
+       if (!pgtable_page_ctor(page)) {
+               __free_page(page);
+               return NULL;
+       }
+
+       pte = kmap(page);
+       __flush_page_to_ram(pte);
+       flush_tlb_kernel_page(pte);
+       nocache_page(pte);
+       kunmap(page);
+       return page;
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t page)
+{
+       pgtable_page_dtor(page);
+       cache_page(kmap(page));
+       kunmap(page);
+       __free_page(page);
+}
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
+                                 unsigned long address)
+{
+       pgtable_page_dtor(page);
+       cache_page(kmap(page));
+       kunmap(page);
+       __free_page(page);
+}
+
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+       return get_pointer_table();
+}
+
+static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+       return free_pointer_table(pmd);
+}
+
+static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
+                                unsigned long address)
+{
+       return free_pointer_table(pmd);
+}
+
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+       pmd_free(mm, (pmd_t *)pgd);
+}
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+       return (pgd_t *)get_pointer_table();
+}
+
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+{
+       pmd_set(pmd, pte);
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+{
+       pmd_set(pmd, page_address(page));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+       pgd_set(pgd, pmd);
+}
+
+#endif /* _MOTOROLA_PGALLOC_H */