path: root/arch/csky/abiv1
diff options
authorGuo Ren <>2020-01-31 20:33:10 +0800
committerGuo Ren <>2020-02-21 15:43:24 +0800
commit997153b9a75c08d545ad45e6f8ceb432435d2425 (patch)
tree830915f73d05e7d094d2f293a712e05c0da1e6f5 /arch/csky/abiv1
parentcc1f6563a92ced0889775d0587316d725b6e1a68 (diff)
csky: Add flush_icache_mm to defer flush icache all
Some CPUs don't support 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 <>
Diffstat (limited to 'arch/csky/abiv1')
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/csky/abiv1/inc/abi/cacheflush.h b/arch/csky/abiv1/inc/abi/cacheflush.h
index a73702704f38..d3e04208d53c 100644
--- a/arch/csky/abiv1/inc/abi/cacheflush.h
+++ b/arch/csky/abiv1/inc/abi/cacheflush.h
@@ -48,6 +48,8 @@ extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, u
#define flush_icache_page(vma, page) do {} while (0);
#define flush_icache_range(start, end) cache_wbinv_range(start, end)
+#define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end)
+#define flush_icache_deferred(mm) do {} while (0);
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
do { \