sh: Migrate SH-4 cacheflush ops to function pointers.

This paves the way for allowing individual CPUs to overload the
individual flushing routines that they care about without having to
depend on weak aliases. SH-4 is converted over initially, as it wires
up pretty much everything. The majority of the other CPUs will simply use
the default no-op implementation with their own region flushers wired up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 1 insertions, 36 deletions

diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index b1cf30f423a..25b7f46494d 100644
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -1,46 +1,11 @@
 #ifndef __ASM_SH_CACHEFLUSH_H
 #define __ASM_SH_CACHEFLUSH_H
 
-#include <linux/mm.h>
-
 #ifdef __KERNEL__
 
-#ifdef CONFIG_CACHE_OFF
-/*
- * Nothing to do when the cache is disabled, initial flush and explicit
- * disabling is handled at CPU init time.
- *
- * See arch/sh/kernel/cpu/init.c:cache_init().
- */
-#define flush_cache_all()			do { } while (0)
-#define flush_cache_mm(mm)			do { } while (0)
-#define flush_cache_dup_mm(mm)			do { } while (0)
-#define flush_cache_range(vma, start, end)	do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
-#define flush_dcache_page(page)			do { } while (0)
-#define flush_icache_range(start, end)		do { } while (0)
-#define flush_icache_page(vma,pg)		do { } while (0)
-#define flush_cache_sigtramp(vaddr)		do { } while (0)
-#define __flush_wback_region(start, size)	do { (void)(start); } while (0)
-#define __flush_purge_region(start, size)	do { (void)(start); } while (0)
-#define __flush_invalidate_region(start, size)	do { (void)(start); } while (0)
-#else
+#include <linux/mm.h>
 #include <cpu/cacheflush.h>
 
-/*
- * Consistent DMA requires that the __flush_xxx() primitives must be set
- * for any of the enabled non-coherent caches (most of the UP CPUs),
- * regardless of PIPT or VIPT cache configurations.
- */
-
-/* Flush (write-back only) a region (smaller than a page) */
-extern void __flush_wback_region(void *start, int size);
-/* Flush (write-back & invalidate) a region (smaller than a page) */
-extern void __flush_purge_region(void *start, int size);
-/* Flush (invalidate only) a region (smaller than a page) */
-extern void __flush_invalidate_region(void *start, int size);
-#endif
-
 #define ARCH_HAS_FLUSH_ANON_PAGE
 extern void __flush_anon_page(struct page *page, unsigned long);