x86: demacro asm-x86/pgalloc_32.h

Convert macros into inline functions, for better type-checking.

This patch required a little bit of fiddling with headers in order to
make __(pte|pmd)_free_tlb inline rather than macros.
asm-generic/tlb.h includes asm/pgalloc.h, though it doesn't directly
use any pgalloc definitions.  I removed this include to avoid an
include cycle, but it may cause secondary compile failures by things
depending on the indirect inclusion; arch/x86/mm/hugetlbpage.c was one
such place; there may be others.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 40 insertions, 25 deletions

diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index 75f2bfab614f..6ce9f3ab928d 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -15,7 +15,6 @@
 
 #include <linux/swap.h>
 #include <linux/quicklist.h>
-#include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 
 /*
diff --git a/include/asm-x86/pgalloc_32.h b/include/asm-x86/pgalloc_32.h
index fbc6357f5eba..3482c3427897 100644
--- a/include/asm-x86/pgalloc_32.h
+++ b/include/asm-x86/pgalloc_32.h
@@ -3,6 +3,8 @@
 
 #include <linux/threads.h>
 #include <linux/mm.h>           /* for struct page */
+#include <asm/tlb.h>
+#include <asm-generic/tlb.h>
 
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
@@ -14,19 +16,20 @@
 #define paravirt_release_pd(pfn) do { } while (0)
 #endif
 
-#define pmd_populate_kernel(mm, pmd, pte)                       \
-do {                                                            \
-        paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT);         \
-        set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)));           \
-} while (0)
+static inline void pmd_populate_kernel(struct mm_struct *mm,
+                                       pmd_t *pmd, pte_t *pte)
+{
+        paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT);
+        set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
+}
 
-#define pmd_populate(mm, pmd, pte)                              \
-do {                                                            \
-        paravirt_alloc_pt(mm, page_to_pfn(pte));                \
-        set_pmd(pmd, __pmd(_PAGE_TABLE +                        \
-                ((unsigned long long)page_to_pfn(pte) <<        \
-                        (unsigned long long) PAGE_SHIFT)));     \
-} while (0)
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
+{
+        unsigned long pfn = page_to_pfn(pte);
+
+        paravirt_alloc_pt(mm, pfn);
+        set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE));
+}
 
 /*
  * Allocate and free page tables.
@@ -48,20 +51,34 @@ static inline void pte_free(struct page *pte)
 }
 
 
-#define __pte_free_tlb(tlb,pte)                                         \
-do {                                                                    \
-        paravirt_release_pt(page_to_pfn(pte));                          \
-        tlb_remove_page((tlb),(pte));                                   \
-} while (0)
+static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
+{
+        paravirt_release_pt(page_to_pfn(pte));
+        tlb_remove_page(tlb, pte);
+}
 
 #ifdef CONFIG_X86_PAE
 /*
  * 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(x)                     do { } while (0)
-#define __pmd_free_tlb(tlb,x)           do { } while (0)
-#define pud_populate(mm, pmd, pte)      BUG()
-#endif
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+        BUG();
+        return (pmd_t *)2;
+}
+
+static inline void pmd_free(pmd_t *pmd)
+{
+}
+
+static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
+{
+}
+
+static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+        BUG();
+}
+#endif  /* CONFIG_X86_PAE */
 
 #endif /* _I386_PGALLOC_H */
diff --git a/include/asm-x86/pgtable-3level.h b/include/asm-x86/pgtable-3level.h
index 5af7a44ed902..62bb06575d5a 100644
--- a/include/asm-x86/pgtable-3level.h
+++ b/include/asm-x86/pgtable-3level.h
@@ -157,6 +157,4 @@ static inline unsigned long pte_pfn(pte_t pte)
 #define __pte_to_swp_entry(pte)         ((swp_entry_t){ (pte).pte_high })
 #define __swp_entry_to_pte(x)           ((pte_t){ { .pte_high = (x).val } })
 
-#define __pmd_free_tlb(tlb, x)          do { } while (0)
-
 #endif /* _I386_PGTABLE_3LEVEL_H */
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 4f3838adbb30..2c3ce4c69b25 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -6,6 +6,7 @@
 #include <linux/mmzone.h>
 #include <linux/list.h>
 #include <linux/sched.h>
+#include <linux/pagemap.h>
 
 #include <asm/atomic.h>
 #include <asm/page.h>