linux-stable/include/asm-h8300/cacheflush.h
Ralf Baechle ec8c0446b6 [PATCH] Optimize D-cache alias handling on fork
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>
2006-12-13 09:27:08 -08:00

39 lines
1 KiB
C

/*
* (C) Copyright 2002, Yoshinori Sato <ysato@users.sourceforge.jp>
*/
#ifndef _ASM_H8300_CACHEFLUSH_H
#define _AMS_H8300_CACHEFLUSH_H
/*
* Cache handling functions
* No Cache memory all dummy functions
*/
#define flush_cache_all()
#define flush_cache_mm(mm)
#define flush_cache_dup_mm(mm) do { } while (0)
#define flush_cache_range(vma,a,b)
#define flush_cache_page(vma,p,pfn)
#define flush_dcache_page(page)
#define flush_dcache_mmap_lock(mapping)
#define flush_dcache_mmap_unlock(mapping)
#define flush_icache()
#define flush_icache_page(vma,page)
#define flush_icache_range(start,len)
#define flush_cache_vmap(start, end)
#define flush_cache_vunmap(start, end)
#define cache_push_v(vaddr,len)
#define cache_push(paddr,len)
#define cache_clear(paddr,len)
#define flush_dcache_range(a,b)
#define flush_icache_user_range(vma,page,addr,len)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
#endif /* _ASM_H8300_CACHEFLUSH_H */