MN10300: Allow some cacheflushes to be avoided if cache snooping is available

The AM34 core is able to do cache snooping, and so can skip some of the cache
flushing.

Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/arch/mn10300/include/asm/cacheflush.h b/arch/mn10300/include/asm/cacheflush.h
index 748143f65418..faed90240ded 100644
--- a/arch/mn10300/include/asm/cacheflush.h
+++ b/arch/mn10300/include/asm/cacheflush.h
@@ -131,18 +131,22 @@ extern void mn10300_dcache_flush_inv_range2(unsigned long start, unsigned long s
 /*
  * Physically-indexed cache management
  */
-#ifdef CONFIG_MN10300_CACHE_ENABLED
-
+#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE)
+extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
+extern void flush_icache_range(unsigned long start, unsigned long end);
+#elif defined(CONFIG_MN10300_CACHE_INV_ICACHE)
+static inline void flush_icache_page(struct vm_area_struct *vma,
+                                     struct page *page)
+{
+        mn10300_icache_inv_page(page_to_phys(page));
+}
 extern void flush_icache_range(unsigned long start, unsigned long end);
-extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg);
-
 #else
-
 #define flush_icache_range(start, end)          do {} while (0)
 #define flush_icache_page(vma, pg)              do {} while (0)
-
 #endif
 
+
 #define flush_icache_user_range(vma, pg, adr, len) \
         flush_icache_range(adr, adr + len)