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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>
This commit is contained in:
Christoph Hellwig 2020-06-07 21:41:58 -07:00 committed by Linus Torvalds
parent 2d49d89c73
commit af23eea561
1 changed files with 5 additions and 14 deletions
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19
arch/hexagon/include/asm/cacheflush.h
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@ -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