From ef85d057a605c36063a15345be87a45e0affba88 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Tue, 1 Oct 2019 21:53:06 +0000 Subject: 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 Cc: linux-mips@vger.kernel.org Cc: Huacai Chen Cc: Jiaxun Yang Cc: linux-kernel@vger.kernel.org --- arch/mips/include/asm/llsc.h | 4 ++++ 1 file changed, 4 insertions(+) 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 + #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 -- cgit v1.2.3