diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-06-07 21:41:48 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-08 11:05:57 -0700 |
| commit | 43c74ca337ce623a5f0cb93e2903f4a88d3e98a7 (patch) | |
| tree | 8a56b461f6f15f441ce5bc9518dcb65d57967a81 /arch/alpha/include/asm | |
| parent | asm-generic: improve the flush_dcache_page stub (diff) | |
| download | linux-dev-43c74ca337ce623a5f0cb93e2903f4a88d3e98a7.tar.xz linux-dev-43c74ca337ce623a5f0cb93e2903f4a88d3e98a7.zip | |
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>
Diffstat (limited to 'arch/alpha/include/asm')
| -rw-r--r-- | arch/alpha/include/asm/cacheflush.h | 28 |
1 files changed, 6 insertions, 22 deletions
diff --git a/arch/alpha/include/asm/cacheflush.h b/arch/alpha/include/asm/cacheflush.h index 89128489cb59..636d7ca0d05f 100644 --- a/arch/alpha/include/asm/cacheflush.h +++ b/arch/alpha/include/asm/cacheflush.h @@ -4,19 +4,6 @@ #include <linux/mm.h> -/* Caches aren't brain-dead on the Alpha. */ -#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_cache_vmap(start, end) do { } while (0) -#define flush_cache_vunmap(start, end) do { } while (0) - /* Note that the following two definitions are _highly_ dependent on the contexts in which they are used in the kernel. I personally think it is criminal how loosely defined these macros are. */ @@ -59,20 +46,17 @@ flush_icache_user_range(struct vm_area_struct *vma, struct page *page, mm->context[smp_processor_id()] = 0; } } -#else +#define flush_icache_user_range flush_icache_user_range +#else /* CONFIG_SMP */ extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); -#endif +#define flush_icache_user_range flush_icache_user_range +#endif /* CONFIG_SMP */ /* This is used only in __do_fault and do_swap_page. */ #define flush_icache_page(vma, page) \ - flush_icache_user_range((vma), (page), 0, 0) + flush_icache_user_range((vma), (page), 0, 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 /* _ALPHA_CACHEFLUSH_H */ |