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Date: Sun, 25 Jan 2009 22:35:37 +0100
From: Andrea Righi <righi.andrea@...il.com>
To: akpm@...ux-foundation.org
Cc: linux-mm@...ck.org, linux-arch@...r.kernel.org,
linux-kernel@...r.kernel.org, Andrea Righi <righi.andrea@...il.com>
Subject: [PATCH -mmotm] mm: unify some pmd_*() functions
Unify all the identical implementations of pmd_free(), __pmd_free_tlb(),
pmd_alloc_one(), pmd_addr_end() in include/asm-generic/pgtable-nopmd.h
Signed-off-by: Andrea Righi <righi.andrea@...il.com>
---
include/asm-frv/pgalloc.h | 9 +-------
include/asm-generic/pgtable-nopmd.h | 36 ++++++++++++++++++++++++++++++----
include/asm-m32r/pgalloc.h | 9 +-------
include/asm-m68k/motorola_pgalloc.h | 4 ++-
include/asm-m68k/sun3_pgalloc.h | 10 +--------
5 files changed, 37 insertions(+), 31 deletions(-)
diff --git a/include/asm-frv/pgalloc.h b/include/asm-frv/pgalloc.h
index 971e6ad..c4be813 100644
--- a/include/asm-frv/pgalloc.h
+++ b/include/asm-frv/pgalloc.h
@@ -55,14 +55,7 @@ do { \
tlb_remove_page((tlb),(pte)); \
} while (0)
-/*
- * 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 pmd_alloc_one pmd_alloc_one_bug
#endif /* CONFIG_MMU */
diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h
index a7cdc48..b132d69 100644
--- a/include/asm-generic/pgtable-nopmd.h
+++ b/include/asm-generic/pgtable-nopmd.h
@@ -4,6 +4,7 @@
#ifndef __ASSEMBLY__
#include <asm-generic/pgtable-nopud.h>
+#include <asm/bug.h>
struct mm_struct;
@@ -54,15 +55,40 @@ static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pud, 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, address) NULL
+#ifndef pmd_alloc_one
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ return NULL;
+}
+#define pmd_alloc_one pmd_alloc_one
+#endif
+static inline pmd_t *pmd_alloc_one_bug(struct mm_struct *mm, unsigned long addr)
+{
+ BUG();
+ return (pmd_t *)(2);
+}
+#ifndef pmd_free
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
}
-#define __pmd_free_tlb(tlb, x) do { } while (0)
-
-#undef pmd_addr_end
-#define pmd_addr_end(addr, end) (end)
+#define pmd_free pmd_free
+#endif
+#ifndef __pmd_free_tlb
+struct mmu_gather;
+static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
+{
+}
+#define __pmd_free_tlb __pmd_free_tlb
+#endif
+#ifndef pmd_addr_end
+static inline unsigned long pmd_addr_end(unsigned long addr, unsigned long end)
+{
+ return end;
+}
+#define pmd_addr_end pmd_addr_end
+#endif
#endif /* __ASSEMBLY__ */
diff --git a/include/asm-m32r/pgalloc.h b/include/asm-m32r/pgalloc.h
index f11a2b9..b700896 100644
--- a/include/asm-m32r/pgalloc.h
+++ b/include/asm-m32r/pgalloc.h
@@ -60,15 +60,8 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t 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 pmd_alloc_one_bug
-#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)
diff --git a/include/asm-m68k/motorola_pgalloc.h b/include/asm-m68k/motorola_pgalloc.h
index d08bf62..984436d 100644
--- a/include/asm-m68k/motorola_pgalloc.h
+++ b/include/asm-m68k/motorola_pgalloc.h
@@ -67,17 +67,19 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
return get_pointer_table();
}
+#define pmd_alloc_one pmd_alloc_one
static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
return free_pointer_table(pmd);
}
+#define pmd_free pmd_free
static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
{
return free_pointer_table(pmd);
}
-
+#define __pmd_free_tlb __pmd_free_tlb
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
diff --git a/include/asm-m68k/sun3_pgalloc.h b/include/asm-m68k/sun3_pgalloc.h
index d4c83f1..0fe28fc 100644
--- a/include/asm-m68k/sun3_pgalloc.h
+++ b/include/asm-m68k/sun3_pgalloc.h
@@ -18,8 +18,7 @@
extern const char bad_pmd_string[];
-#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
-
+#define pmd_alloc_one pmd_alloc_one_bug
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
@@ -75,13 +74,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page
}
#define pmd_pgtable(pmd) pmd_page(pmd)
-/*
- * allocating and freeing a pmd is trivial: the 1-entry pmd is
- * inside the pgd, so has no extra memory associated with it.
- */
-#define pmd_free(mm, x) do { } while (0)
-#define __pmd_free_tlb(tlb, x) do { } while (0)
-
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long) pgd);
--
1.5.6.3
--
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