hexagon: use asm-generic/cacheflush.h

Hexagon needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Brian Cain <bcain@codeaurora.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-12-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h
index fb447de..6eff073 100644 (file)
--- a/arch/hexagon/include/asm/cacheflush.h
+++ b/arch/hexagon/include/asm/cacheflush.h
@@ -25,29 +25,17 @@
 #define LINESIZE       32
 #define LINEBITS       5
 
-#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 ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
-#define flush_dcache_page(page)                        do { } while (0)
-#define flush_dcache_mmap_lock(mapping)                do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)      do { } while (0)
-#define flush_icache_page(vma, pg)             do { } while (0)
-#define flush_icache_user_range(vma, pg, adr, len)     do { } while (0)
-#define flush_cache_vmap(start, end)           do { } while (0)
-#define flush_cache_vunmap(start, end)         do { } while (0)
-
 /*
  * Flush Dcache range through current map.
  */
 extern void flush_dcache_range(unsigned long start, unsigned long end);
+#define flush_dcache_range flush_dcache_range
 
 /*
  * Flush Icache range through current map.
  */
 extern void flush_icache_range(unsigned long start, unsigned long end);
+#define flush_icache_range flush_icache_range
 
 /*
  * Memory-management related flushes are there to ensure in non-physically
@@ -78,6 +66,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 
 void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
                       unsigned long vaddr, void *dst, void *src, int len);
+#define copy_to_user_page copy_to_user_page
 
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
        memcpy(dst, src, len)
@@ -85,4 +74,6 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
 extern void hexagon_inv_dcache_range(unsigned long start, unsigned long end);
 extern void hexagon_clean_dcache_range(unsigned long start, unsigned long end);
 
+#include <asm-generic/cacheflush.h>
+
 #endif