1 files changed, 98 insertions, 0 deletions

diff --git a/arch/avr32/include/asm/pgalloc.h b/arch/avr32/include/asm/pgalloc.h
new file mode 100644
index 000000000000..640821323943
--- /dev/null
+++ b/arch/avr32/include/asm/pgalloc.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_PGALLOC_H
+#define __ASM_AVR32_PGALLOC_H
+
+#include <linux/quicklist.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+#define QUICK_PGD       0       /* Preserve kernel mappings over free */
+#define QUICK_PT        1       /* Zero on free */
+
+static inline void pmd_populate_kernel(struct mm_struct *mm,
+                                       pmd_t *pmd, pte_t *pte)
+{
+        set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+                                    pgtable_t pte)
+{
+        set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void pgd_ctor(void *x)
+{
+        pgd_t *pgd = x;
+
+        memcpy(pgd + USER_PTRS_PER_PGD,
+                swapper_pg_dir + USER_PTRS_PER_PGD,
+                (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+}
+
+/*
+ * Allocate and free page tables
+ */
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+        return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        quicklist_free(QUICK_PGD, NULL, pgd);
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+                                          unsigned long address)
+{
+        return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+                                         unsigned long address)
+{
+        struct page *page;
+        void *pg;
+
+        pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+        if (!pg)
+                return NULL;
+
+        page = virt_to_page(pg);
+        pgtable_page_ctor(page);
+
+        return page;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+        quicklist_free(QUICK_PT, NULL, pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+        pgtable_page_dtor(pte);
+        quicklist_free_page(QUICK_PT, NULL, pte);
+}
+
+#define __pte_free_tlb(tlb,pte)                         \
+do {                                                    \
+        pgtable_page_dtor(pte);                         \
+        tlb_remove_page((tlb), pte);                    \
+} while (0)
+
+static inline void check_pgt_cache(void)
+{
+        quicklist_trim(QUICK_PGD, NULL, 25, 16);
+        quicklist_trim(QUICK_PT, NULL, 25, 16);
+}
+
+#endif /* __ASM_AVR32_PGALLOC_H */