diff options
| author | Paul Burton <paul.burton@mips.com> | 2019-10-02 00:53:06 +0300 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2019-10-07 19:42:14 +0300 |
| commit | ef85d057a605c36063a15345be87a45e0affba88 (patch) | |
| tree | 8f2f1c2143a8cb51de33f3368ae4307e6836e9a8 /arch/mips/include/asm/llsc.h | |
| parent | 878f75c7a2530471844a93b01e887f09d24ed57f (diff) | |
| download | linux-ef85d057a605c36063a15345be87a45e0affba88.tar.xz | |
MIPS: Use compact branch for LL/SC loops on MIPSr6+
When targeting MIPSr6 or higher make use of a compact branch in LL/SC
loops, preventing the insertion of a delay slot nop that only serves to
waste space.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'arch/mips/include/asm/llsc.h')
| -rw-r--r-- | arch/mips/include/asm/llsc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/llsc.h b/arch/mips/include/asm/llsc.h index 9b19f38562ac..d240a4a2d1c4 100644 --- a/arch/mips/include/asm/llsc.h +++ b/arch/mips/include/asm/llsc.h @@ -9,6 +9,8 @@ #ifndef __ASM_LLSC_H #define __ASM_LLSC_H +#include <asm/isa-rev.h> + #if _MIPS_SZLONG == 32 #define SZLONG_LOG 5 #define SZLONG_MASK 31UL @@ -32,6 +34,8 @@ */ #if R10000_LLSC_WAR # define __SC_BEQZ "beqzl " +#elif MIPS_ISA_REV >= 6 +# define __SC_BEQZ "beqzc " #else # define __SC_BEQZ "beqz " #endif |