summaryrefslogtreecommitdiffstats
path: root/arch/m32r/include/asm/pgalloc.h
diff options
context:
space:
mode:
authorHirokazu Takata <takata@linux-m32r.org>2008-11-28 02:46:48 +0900
committerHirokazu Takata <takata@linux-m32r.org>2009-04-17 10:05:01 +0900
commitfe4e719d82c4052751d2287de4bd18bd04e93685 (patch)
tree3a120e25626becf138f523a356422c0cdf9804c7 /arch/m32r/include/asm/pgalloc.h
parent20d9207849d5abe60461841b3c3724f6e7c9d33e (diff)
downloadop-kernel-dev-fe4e719d82c4052751d2287de4bd18bd04e93685.zip
op-kernel-dev-fe4e719d82c4052751d2287de4bd18bd04e93685.tar.gz
m32r: move include/asm-m32r headers to arch/m32r/include/asm
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Diffstat (limited to 'arch/m32r/include/asm/pgalloc.h')
-rw-r--r--arch/m32r/include/asm/pgalloc.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h
new file mode 100644
index 0000000..f11a2b9
--- /dev/null
+++ b/arch/m32r/include/asm/pgalloc.h
@@ -0,0 +1,76 @@
+#ifndef _ASM_M32R_PGALLOC_H
+#define _ASM_M32R_PGALLOC_H
+
+#include <linux/mm.h>
+
+#include <asm/io.h>
+
+#define pmd_populate_kernel(mm, pmd, pte) \
+ set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+
+static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+ pgtable_t pte)
+{
+ set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * Allocate and free page tables.
+ */
+static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+ pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
+
+ return pgd;
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+ free_page((unsigned long)pgd);
+}
+
+static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address)
+{
+ pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
+
+ return pte;
+}
+
+static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
+ unsigned long address)
+{
+ struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
+
+ pgtable_page_ctor(pte);
+ return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ free_page((unsigned long)pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+ pgtable_page_dtor(pte);
+ __free_page(pte);
+}
+
+#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
+
+/*
+ * allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ * (In the PAE case we free the pmds as part of the pgd.)
+ */
+
+#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
+#define pmd_free(mm, x) do { } while (0)
+#define __pmd_free_tlb(tlb, x) do { } while (0)
+#define pgd_populate(mm, pmd, pte) BUG()
+
+#define check_pgt_cache() do { } while (0)
+
+#endif /* _ASM_M32R_PGALLOC_H */
OpenPOWER on IntegriCloud