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Virtually index, physically tagged cache architectures can get away without cache flushing when forking. This patch adds a new cache flushing function flush_cache_dup_mm(struct mm_struct *) which for the moment I've implemented to do the same thing on all architectures except on MIPS where it's a no-op. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
39 lines
1 KiB
C
39 lines
1 KiB
C
/*
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* (C) Copyright 2002, Yoshinori Sato <ysato@users.sourceforge.jp>
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*/
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#ifndef _ASM_H8300_CACHEFLUSH_H
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#define _AMS_H8300_CACHEFLUSH_H
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/*
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* Cache handling functions
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* No Cache memory all dummy functions
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*/
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#define flush_cache_all()
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#define flush_cache_mm(mm)
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#define flush_cache_dup_mm(mm) do { } while (0)
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#define flush_cache_range(vma,a,b)
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#define flush_cache_page(vma,p,pfn)
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#define flush_dcache_page(page)
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#define flush_dcache_mmap_lock(mapping)
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#define flush_dcache_mmap_unlock(mapping)
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#define flush_icache()
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#define flush_icache_page(vma,page)
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#define flush_icache_range(start,len)
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#define flush_cache_vmap(start, end)
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#define flush_cache_vunmap(start, end)
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#define cache_push_v(vaddr,len)
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#define cache_push(paddr,len)
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#define cache_clear(paddr,len)
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#define flush_dcache_range(a,b)
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#define flush_icache_user_range(vma,page,addr,len)
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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memcpy(dst, src, len)
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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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#endif /* _ASM_H8300_CACHEFLUSH_H */
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