[PARISC] Add parisc implementation of flush_kernel_dcache_page()

We need to do a little renaming of our original syntax because
of the difference in arguments.
Signed-off-by: James Bottomley <jejb@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

arch/parisc/kernel/cache.c

@@ -89,7 +89,7 @@ update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 	if (pfn_valid(page_to_pfn(page)) && page_mapping(page) &&
 	    test_bit(PG_dcache_dirty, &page->flags)) {
 
-		flush_kernel_dcache_page(page_address(page));
+		flush_kernel_dcache_page(page);
 		clear_bit(PG_dcache_dirty, &page->flags);
 	}
 }
@@ -278,7 +278,7 @@ void flush_dcache_page(struct page *page)
 		return;
 	}
 
-	flush_kernel_dcache_page(page_address(page));
+	flush_kernel_dcache_page(page);
 
 	if (!mapping)
 		return;
@@ -317,7 +317,7 @@ EXPORT_SYMBOL(flush_dcache_page);
 
 /* Defined in arch/parisc/kernel/pacache.S */
 EXPORT_SYMBOL(flush_kernel_dcache_range_asm);
-EXPORT_SYMBOL(flush_kernel_dcache_page);
+EXPORT_SYMBOL(flush_kernel_dcache_page_asm);
 EXPORT_SYMBOL(flush_data_cache_local);
 EXPORT_SYMBOL(flush_kernel_icache_range_asm);
 

arch/parisc/kernel/pacache.S

@@ -621,9 +621,9 @@ __clear_user_page_asm:
 
 	.procend
 
-	.export flush_kernel_dcache_page
+	.export flush_kernel_dcache_page_asm
 
-flush_kernel_dcache_page:
+flush_kernel_dcache_page_asm:
 	.proc
 	.callinfo NO_CALLS
 	.entry

include/asm-parisc/cache.h

@@ -48,7 +48,7 @@ extern void flush_user_icache_range_asm(unsigned long, unsigned long);
 extern void flush_kernel_icache_range_asm(unsigned long, unsigned long);
 extern void flush_user_dcache_range_asm(unsigned long, unsigned long);
 extern void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
-extern void flush_kernel_dcache_page(void *);
+extern void flush_kernel_dcache_page_asm(void *);
 extern void flush_kernel_icache_page(void *);
 extern void disable_sr_hashing(void);   /* turns off space register hashing */
 extern void disable_sr_hashing_asm(int); /* low level support for above */

include/asm-parisc/cacheflush.h

@@ -62,7 +62,7 @@ extern void flush_dcache_page(struct page *page);
 #define flush_dcache_mmap_unlock(mapping) \
 	write_unlock_irq(&(mapping)->tree_lock)
 
-#define flush_icache_page(vma,page)	do { flush_kernel_dcache_page(page_address(page)); flush_kernel_icache_page(page_address(page)); } while (0)
+#define flush_icache_page(vma,page)	do { flush_kernel_dcache_page(page); flush_kernel_icache_page(page_address(page)); } while (0)
 
 #define flush_icache_range(s,e)		do { flush_kernel_dcache_range_asm(s,e); flush_kernel_icache_range_asm(s,e); } while (0)
 
@@ -192,6 +192,13 @@ flush_anon_page(struct page *page, unsigned long vmaddr)
 }
 #define ARCH_HAS_FLUSH_ANON_PAGE
 
+static inline void
+flush_kernel_dcache_page(struct page *page)
+{
+	flush_kernel_dcache_page_asm(page_address(page));
+}
+#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
+
 #ifdef CONFIG_DEBUG_RODATA
 void mark_rodata_ro(void);
 #endif

include/asm-parisc/page.h

@@ -26,7 +26,7 @@ static inline void
 copy_user_page(void *vto, void *vfrom, unsigned long vaddr, struct page *pg)
 {
 	copy_user_page_asm(vto, vfrom);
-	flush_kernel_dcache_page(vto);
+	flush_kernel_dcache_page_asm(vto);
 	/* XXX: ppc flushes icache too, should we? */
 }