mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
ec8c0446b6
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>
40 lines
1.0 KiB
C
40 lines
1.0 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 */
|