提交 46ad8d2d 编写于 作者: V Vijay Kumar 提交者: David S. Miller

sparc64: Use sparc optimized fls and __fls for T4 and above

For T4 and above, patch fls and __fls functions
at the boot time to use lzcnt instruction.
Signed-off-by: NVijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 2b41ce5d
......@@ -640,6 +640,8 @@ niagara4_patch:
nop
call niagara4_patch_pageops
nop
call niagara4_patch_fls
nop
ba,a,pt %xcc, 80f
nop
......
......@@ -3,6 +3,8 @@
* Copyright (C) 2012 David S. Miller <davem@davemloft.net>
*/
#include <linux/linkage.h>
#define BRANCH_ALWAYS 0x10680000
#define NOP 0x01000000
#define NG_DO_PATCH(OLD, NEW) \
......@@ -52,3 +54,10 @@ niagara4_patch_pageops:
retl
nop
.size niagara4_patch_pageops,.-niagara4_patch_pageops
ENTRY(niagara4_patch_fls)
NG_DO_PATCH(fls, NG4fls)
NG_DO_PATCH(__fls, __NG4fls)
retl
nop
ENDPROC(niagara4_patch_fls)
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册