diff options
| author | Guo Ren <guoren@linux.alibaba.com> | 2020-01-31 13:33:10 +0100 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2020-02-21 08:43:24 +0100 |
| commit | 997153b9a75c08d545ad45e6f8ceb432435d2425 (patch) | |
| tree | 830915f73d05e7d094d2f293a712e05c0da1e6f5 /arch/csky/abiv2/inc | |
| parent | csky: Optimize abiv2 copy_to_user_page with VM_EXEC (diff) | |
| download | linux-997153b9a75c08d545ad45e6f8ceb432435d2425.tar.xz linux-997153b9a75c08d545ad45e6f8ceb432435d2425.zip | |
csky: Add flush_icache_mm to defer flush icache all
Some CPUs don't support icache.va instruction to maintain the whole
smp cores' icache. Using icache.all + IPI casue a lot on performace
and using defer mechanism could reduce the number of calling icache
_flush_all functions.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Diffstat (limited to 'arch/csky/abiv2/inc')
| -rw-r--r-- | arch/csky/abiv2/inc/abi/cacheflush.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h index 28b7c3233175..a565e00c3f70 100644 --- a/arch/csky/abiv2/inc/abi/cacheflush.h +++ b/arch/csky/abiv2/inc/abi/cacheflush.h @@ -31,15 +31,23 @@ static inline void flush_dcache_page(struct page *page) #define flush_icache_range(start, end) cache_wbinv_range(start, end) +void flush_icache_mm_range(struct mm_struct *mm, + unsigned long start, unsigned long end); +void flush_icache_deferred(struct mm_struct *mm); + #define flush_cache_vmap(start, end) do { } while (0) #define flush_cache_vunmap(start, end) do { } while (0) #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ memcpy(dst, src, len); \ - if (vma->vm_flags & VM_EXEC) \ - cache_wbinv_range((unsigned long)dst, \ - (unsigned long)dst + len); \ + if (vma->vm_flags & VM_EXEC) { \ + dcache_wb_range((unsigned long)dst, \ + (unsigned long)dst + len); \ + flush_icache_mm_range(current->mm, \ + (unsigned long)dst, \ + (unsigned long)dst + len); \ + } \ } while (0) #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ memcpy(dst, src, len) |