linux-kernel - [PATCH 12/31] c6x: use asm-generic/cacheflush.h

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Date:   Sun, 10 May 2020 09:54:51 +0200
From:   Christoph Hellwig <hch@....de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Roman Zippel <zippel@...ux-m68k.org>
Cc:     Jessica Yu <jeyu@...nel.org>, Michal Simek <monstr@...str.eu>,
        x86@...nel.org, linux-alpha@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-c6x-dev@...ux-c6x.org, linux-hexagon@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, openrisc@...ts.librecores.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linux-um@...ts.infradead.org, linux-xtensa@...ux-xtensa.org,
        linux-fsdevel@...r.kernel.org
Subject: [PATCH 12/31] c6x: use asm-generic/cacheflush.h

C6x needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/c6x/include/asm/cacheflush.h | 19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

diff --git a/arch/c6x/include/asm/cacheflush.h b/arch/c6x/include/asm/cacheflush.h
index 4540b40475e6c..10922d528de6d 100644
--- a/arch/c6x/include/asm/cacheflush.h
+++ b/arch/c6x/include/asm/cacheflush.h
@@ -16,21 +16,6 @@
 #include <asm/page.h>
 #include <asm/string.h>
 
-/*
- * virtually-indexed cache management (our cache is physically indexed)
- */
-#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(mm, start, end)	do {} while (0)
-#define flush_cache_page(vma, vmaddr, pfn)	do {} while (0)
-#define flush_cache_vmap(start, end)		do {} while (0)
-#define flush_cache_vunmap(start, end)		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)
-
 /*
  * physically-indexed cache management
  */
@@ -49,14 +34,12 @@ do {								  \
 			(unsigned long) page_address(page) + PAGE_SIZE)); \
 } while (0)
 
-
 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
 do {						     \
 	memcpy(dst, src, len);			     \
 	flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
 } while (0)
 
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
-	memcpy(dst, src, len)
+#include <asm-generic/cacheflush.h>
 
 #endif /* _ASM_C6X_CACHEFLUSH_H */
-- 
2.26.2