Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7575a49f209190ca640e0da792565a1bcb641f3e
Commit: 7575a49f209190ca640e0da792565a1bcb641f3e
Parent: 80e89593e5a574a572f4e45e157733b5ea5ddfdb
Author: Ralf Baechle <[EMAIL PROTECTED]>
AuthorDate: Fri Mar 23 21:36:37 2007 +0000
Committer: Ralf Baechle <[EMAIL PROTECTED]>
CommitDate: Sat Mar 24 17:01:49 2007 +0000
[MIPS] Implement flush_anon_page().
Signed-off-by: Ralf Baechle <[EMAIL PROTECTED]>
---
arch/mips/mm/cache.c | 16 +++++++++++++++-
arch/mips/mm/init.c | 4 ++--
include/asm-mips/cacheflush.h | 12 ++++++++++++
3 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 31819c5..4e8f1b6 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -3,7 +3,8 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1994 - 2003 by Ralf Baechle
+ * Copyright (C) 1994 - 2003, 07 by Ralf Baechle ([EMAIL PROTECTED])
+ * Copyright (C) 2007 MIPS Technologies, Inc.
*/
#include <linux/init.h>
#include <linux/kernel.h>
@@ -88,6 +89,19 @@ void __flush_dcache_page(struct page *page)
EXPORT_SYMBOL(__flush_dcache_page);
+void __flush_anon_page(struct page *page, unsigned long vmaddr)
+{
+ if (pages_do_alias((unsigned long)page_address(page), vmaddr)) {
+ void *kaddr;
+
+ kaddr = kmap_coherent(page, vmaddr);
+ flush_data_cache_page((unsigned long)kaddr);
+ kunmap_coherent(kaddr);
+ }
+}
+
+EXPORT_SYMBOL(__flush_anon_page);
+
void __update_cache(struct vm_area_struct *vma, unsigned long address,
pte_t pte)
{
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 25abe91..e9951c0 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -123,7 +123,7 @@ static void __init kmap_coherent_init(void)
static inline void kmap_coherent_init(void) {}
#endif
-static inline void *kmap_coherent(struct page *page, unsigned long addr)
+void *kmap_coherent(struct page *page, unsigned long addr)
{
enum fixed_addresses idx;
unsigned long vaddr, flags, entrylo;
@@ -177,7 +177,7 @@ static inline void *kmap_coherent(struct page *page,
unsigned long addr)
#define UNIQUE_ENTRYHI(idx) (CKSEG0 + ((idx) << (PAGE_SHIFT + 1)))
-static inline void kunmap_coherent(struct page *page)
+void kunmap_coherent(struct page *page)
{
#ifndef CONFIG_MIPS_MT_SMTC
unsigned int wired;
diff --git a/include/asm-mips/cacheflush.h b/include/asm-mips/cacheflush.h
index 0ddada3..28d907d 100644
--- a/include/asm-mips/cacheflush.h
+++ b/include/asm-mips/cacheflush.h
@@ -48,6 +48,15 @@ static inline void flush_dcache_page(struct page *page)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+#define ARCH_HAS_FLUSH_ANON_PAGE
+extern void __flush_anon_page(struct page *, unsigned long);
+static inline void flush_anon_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vmaddr)
+{
+ if (cpu_has_dc_aliases && PageAnon(page))
+ __flush_anon_page(page, vmaddr);
+}
+
static inline void flush_icache_page(struct vm_area_struct *vma,
struct page *page)
{
@@ -86,4 +95,7 @@ extern void (*flush_data_cache_page)(unsigned long addr);
/* Run kernel code uncached, useful for cache probing functions. */
unsigned long __init run_uncached(void *func);
+extern void *kmap_coherent(struct page *page, unsigned long addr);
+extern void kunmap_coherent(struct page *page);
+
#endif /* _ASM_CACHEFLUSH_H */
-
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