alpha: use asm-generic/cacheflush.h
Alpha 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> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Link: http://lkml.kernel.org/r/20200515143646.3857579-9-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -4,19 +4,6 @@
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#include <linux/mm.h>
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/* Caches aren't brain-dead on the Alpha. */
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#define flush_cache_all() do { } while (0)
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#define flush_cache_mm(mm) do { } while (0)
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#define flush_cache_dup_mm(mm) do { } while (0)
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#define flush_cache_range(vma, start, end) do { } while (0)
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#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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#define flush_dcache_page(page) do { } while (0)
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#define flush_dcache_mmap_lock(mapping) do { } while (0)
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#define flush_dcache_mmap_unlock(mapping) do { } while (0)
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#define flush_cache_vmap(start, end) do { } while (0)
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#define flush_cache_vunmap(start, end) do { } while (0)
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/* Note that the following two definitions are _highly_ dependent
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on the contexts in which they are used in the kernel. I personally
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think it is criminal how loosely defined these macros are. */
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@ -59,20 +46,17 @@ flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
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mm->context[smp_processor_id()] = 0;
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}
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}
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#else
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#define flush_icache_user_range flush_icache_user_range
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#else /* CONFIG_SMP */
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extern void flush_icache_user_range(struct vm_area_struct *vma,
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struct page *page, unsigned long addr, int len);
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#endif
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#define flush_icache_user_range flush_icache_user_range
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#endif /* CONFIG_SMP */
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/* This is used only in __do_fault and do_swap_page. */
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#define flush_icache_page(vma, page) \
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flush_icache_user_range((vma), (page), 0, 0)
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flush_icache_user_range((vma), (page), 0, 0)
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { memcpy(dst, src, len); \
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flush_icache_user_range(vma, page, vaddr, len); \
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} while (0)
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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memcpy(dst, src, len)
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#include <asm-generic/cacheflush.h>
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#endif /* _ALPHA_CACHEFLUSH_H */
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