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authorDave McCracken <dmccr@us.ibm.com>2006-09-26 10:31:48 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 19:48:51 +0400
commit46a82b2d5591335277ed2930611f6acb4ce654ed (patch)
treee90bc1843701af2012bae92564f7109027a8244f /include/asm-m32r
parentd2e7b7d0aa021847c59f882b066e7d3812902870 (diff)
downloadlinux-46a82b2d5591335277ed2930611f6acb4ce654ed.tar.xz
[PATCH] Standardize pxx_page macros
One of the changes necessary for shared page tables is to standardize the pxx_page macros. pte_page and pmd_page have always returned the struct page associated with their entry, while pte_page_kernel and pmd_page_kernel have returned the kernel virtual address. pud_page and pgd_page, on the other hand, return the kernel virtual address. Shared page tables needs pud_page and pgd_page to return the actual page structures. There are very few actual users of these functions, so it is simple to standardize their usage. Since this is basic cleanup, I am submitting these changes as a standalone patch. Per Hugh Dickins' comments about it, I am also changing the pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning. Signed-off-by: Dave McCracken <dmccr@us.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-m32r')
-rw-r--r--include/asm-m32r/pgtable-2level.h6
-rw-r--r--include/asm-m32r/pgtable.h4
2 files changed, 7 insertions, 3 deletions
diff --git a/include/asm-m32r/pgtable-2level.h b/include/asm-m32r/pgtable-2level.h
index be0f167e344a..6a674e3d37a2 100644
--- a/include/asm-m32r/pgtable-2level.h
+++ b/include/asm-m32r/pgtable-2level.h
@@ -52,9 +52,13 @@ static inline int pgd_present(pgd_t pgd) { return 1; }
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)
-#define pgd_page(pgd) \
+#define pgd_page_vaddr(pgd) \
((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))
+#ifndef CONFIG_DISCONTIGMEM
+#define pgd_page(pgd) (mem_map + ((pgd_val(pgd) >> PAGE_SHIFT) - PFN_BASE))
+#endif /* !CONFIG_DISCONTIGMEM */
+
static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
{
return (pmd_t *) dir;
diff --git a/include/asm-m32r/pgtable.h b/include/asm-m32r/pgtable.h
index 1983b7f4527a..1c15ba7ce319 100644
--- a/include/asm-m32r/pgtable.h
+++ b/include/asm-m32r/pgtable.h
@@ -336,7 +336,7 @@ static inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
pmd_val(*pmdp) = (((unsigned long) ptep) & PAGE_MASK);
}
-#define pmd_page_kernel(pmd) \
+#define pmd_page_vaddr(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#ifndef CONFIG_DISCONTIGMEM
@@ -358,7 +358,7 @@ static inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
- ((pte_t *)pmd_page_kernel(*(dir)) + pte_index(address))
+ ((pte_t *)pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)