mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
#ifndef _PPC64_CACHEFLUSH_H
|
|
#define _PPC64_CACHEFLUSH_H
|
|
|
|
#include <linux/mm.h>
|
|
#include <asm/cputable.h>
|
|
|
|
/*
|
|
* No cache flushing is required when address mappings are
|
|
* changed, because the caches on PowerPCs are physically
|
|
* addressed.
|
|
*/
|
|
#define flush_cache_all() do { } while (0)
|
|
#define flush_cache_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 flush_icache_page(vma, page) do { } while (0)
|
|
#define flush_cache_vmap(start, end) do { } while (0)
|
|
#define flush_cache_vunmap(start, end) do { } while (0)
|
|
|
|
extern void flush_dcache_page(struct page *page);
|
|
#define flush_dcache_mmap_lock(mapping) do { } while (0)
|
|
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
|
|
|
|
extern void __flush_icache_range(unsigned long, unsigned long);
|
|
extern void flush_icache_user_range(struct vm_area_struct *vma,
|
|
struct page *page, unsigned long addr,
|
|
int len);
|
|
|
|
extern void flush_dcache_range(unsigned long start, unsigned long stop);
|
|
extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
|
|
extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
|
|
|
|
#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)
|
|
|
|
extern void __flush_dcache_icache(void *page_va);
|
|
|
|
static inline void flush_icache_range(unsigned long start, unsigned long stop)
|
|
{
|
|
if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
|
|
__flush_icache_range(start, stop);
|
|
}
|
|
|
|
#endif /* _PPC64_CACHEFLUSH_H */
|