From 34ae9c915f9d12f1ddaa19a23fb3e8984e6a1098 Mon Sep 17 00:00:00 2001 From: Chad Reese Date: Fri, 15 Sep 2017 12:31:28 -0500 Subject: [PATCH] MIPS: Add nudges to writes for bit unlocks. Flushing the writes lets other CPUs waiting for the lock to get it sooner. Signed-off-by: Chad Reese Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17289/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/bitops.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h index fa57cef..da1b8718 100644 --- a/arch/mips/include/asm/bitops.h +++ b/arch/mips/include/asm/bitops.h @@ -456,6 +456,7 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long * { smp_mb__before_llsc(); __clear_bit(nr, addr); + nudge_writes(); } /* -- 2.7.4