From 14c14663be9a6cfb5ce23ba276e178b0cfd96f15 Mon Sep 17 00:00:00 2001
From: Visa Hankala <visa@cvs.openbsd.org>
Date: Sun, 2 Apr 2017 03:51:14 +0000
Subject: Bring back the wait instruction into the idle loop, but only on
 octeon. This lets an idle SoC run a bit cooler.

Tested on CN5020, CN6120 and CN7130.
---
 sys/arch/mips64/mips64/context.S | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'sys')

diff --git a/sys/arch/mips64/mips64/context.S b/sys/arch/mips64/mips64/context.S
index 850bd2799b1..7c38d6cf93a 100644
--- a/sys/arch/mips64/mips64/context.S
+++ b/sys/arch/mips64/mips64/context.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: context.S,v 1.57 2016/09/06 13:41:29 visa Exp $ */
+/*	$OpenBSD: context.S,v 1.58 2017/04/02 03:51:13 visa Exp $ */
 
 /*
  * Copyright (c) 2002-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -81,6 +81,9 @@ LEAF(cpu_idle_leave, 0)
 END(cpu_idle_leave)
 
 LEAF(cpu_idle_cycle, 0)
+#ifdef CPU_OCTEON
+	wait
+#endif
 	j	ra
 	 NOP
 END(cpu_idle_cycle)
-- 
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