From: Christoph Hellwig <hch@xxxxxx> Subject: 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. Link: http://lkml.kernel.org/r/20200515143646.3857579-13-hch@xxxxxx Signed-off-by: Christoph Hellwig <hch@xxxxxx> Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/ia64/include/asm/cacheflush.h | 28 ++------------------------- 1 file changed, 3 insertions(+), 25 deletions(-) --- a/arch/ia64/include/asm/cacheflush.h~ia64-use-asm-generic-cacheflushh +++ a/arch/ia64/include/asm/cacheflush.h @@ -12,44 +12,22 @@ #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 flush_dcache_page(page) \ do { \ clear_bit(PG_arch_1, &(page)->flags); \ } while (0) -#define flush_dcache_mmap_lock(mapping) do { } while (0) -#define flush_dcache_mmap_unlock(mapping) do { } while (0) - -extern void flush_icache_range (unsigned long start, unsigned long end); +extern void flush_icache_range(unsigned long start, unsigned long end); +#define flush_icache_range flush_icache_range extern void clflush_cache_range(void *addr, int size); - #define flush_icache_user_range(vma, page, user_addr, len) \ do { \ unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK); \ flush_icache_range(_addr, _addr + (len)); \ } while (0) -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ -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) +#include <asm-generic/cacheflush.h> #endif /* _ASM_IA64_CACHEFLUSH_H */ _
