mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +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>
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#ifndef __ASM_SH64_CACHEFLUSH_H
|
|
#define __ASM_SH64_CACHEFLUSH_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <asm/page.h>
|
|
|
|
struct vm_area_struct;
|
|
struct page;
|
|
struct mm_struct;
|
|
|
|
extern void flush_cache_all(void);
|
|
extern void flush_cache_mm(struct mm_struct *mm);
|
|
extern void flush_cache_sigtramp(unsigned long start, unsigned long end);
|
|
extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
|
|
unsigned long end);
|
|
extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
|
|
extern void flush_dcache_page(struct page *pg);
|
|
extern void flush_icache_range(unsigned long start, unsigned long end);
|
|
extern void flush_icache_user_range(struct vm_area_struct *vma,
|
|
struct page *page, unsigned long addr,
|
|
int len);
|
|
|
|
#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
|
|
|
|
#define flush_dcache_mmap_lock(mapping) do { } while (0)
|
|
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
|
|
|
|
#define flush_cache_vmap(start, end) flush_cache_all()
|
|
#define flush_cache_vunmap(start, end) flush_cache_all()
|
|
|
|
#define flush_icache_page(vma, page) do { } while (0)
|
|
|
|
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
|
|
do { \
|
|
flush_cache_page(vma, vaddr, page_to_pfn(page));\
|
|
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) \
|
|
do { \
|
|
flush_cache_page(vma, vaddr, page_to_pfn(page));\
|
|
memcpy(dst, src, len); \
|
|
} while (0)
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_SH64_CACHEFLUSH_H */
|
|
|