Commit 57b94ff5 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Linus Torvalds

ia64: use asm-generic/cacheflush.h

IA64 needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/20200515143646.3857579-13-hch@lst.deSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent af23eea5
...@@ -12,44 +12,22 @@ ...@@ -12,44 +12,22 @@
#include <asm/page.h> #include <asm/page.h>
/*
* Cache flushing routines. This is the kind of stuff that can be very expensive, so try
* to avoid them whenever possible.
*/
#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_icache_page(vma,page) 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 1 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
#define flush_dcache_page(page) \ #define flush_dcache_page(page) \
do { \ do { \
clear_bit(PG_arch_1, &(page)->flags); \ clear_bit(PG_arch_1, &(page)->flags); \
} while (0) } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0) extern void flush_icache_range(unsigned long start, unsigned long end);
#define flush_dcache_mmap_unlock(mapping) do { } while (0) #define flush_icache_range flush_icache_range
extern void flush_icache_range (unsigned long start, unsigned long end);
extern void clflush_cache_range(void *addr, int size); extern void clflush_cache_range(void *addr, int size);
#define flush_icache_user_range(vma, page, user_addr, len) \ #define flush_icache_user_range(vma, page, user_addr, len) \
do { \ do { \
unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK); \ unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK); \
flush_icache_range(_addr, _addr + (len)); \ flush_icache_range(_addr, _addr + (len)); \
} while (0) } while (0)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ #include <asm-generic/cacheflush.h>
do { memcpy(dst, src, len); \
flush_icache_user_range(vma, page, vaddr, len); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
#endif /* _ASM_IA64_CACHEFLUSH_H */ #endif /* _ASM_IA64_CACHEFLUSH_H */
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