From a2d5fdac7375620d261b72673dba823666694166 Mon Sep 17 00:00:00 2001
From: mpi <mpi@openbsd.org>
Date: Thu, 1 Jun 2017 10:59:23 +0000
Subject: [PATCH] Re-enabled futex based condvar & mutexes, they are not the
 cause of vmd(8)'s regression.

---
 lib/librthread/Makefile | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/librthread/Makefile b/lib/librthread/Makefile
index c9af30d8dfe..741025eeb5e 100644
--- a/lib/librthread/Makefile
+++ b/lib/librthread/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.45 2017/06/01 08:46:34 mpi Exp $
+#	$OpenBSD: Makefile,v 1.46 2017/06/01 10:59:23 mpi Exp $
 
 LIB=pthread
 LIBCSRCDIR=	${.CURDIR}/../libc
@@ -39,10 +39,17 @@ SRCS=	rthread.c \
 	rthread_sig.c \
 	rthread_stack.c \
 	rthread_spin_lock.c \
-	rthread_sync.c \
 	rthread_tls.c \
 	sched_prio.c
 
+.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"
+CFLAGS+= -DFUTEX
+SRCS+=	rthread_mutex.c \
+	rthread_cond.c
+.else
+SRCS+=	rthread_sync.c
+.endif
+
 OBJS+= _atomic_lock.o
 
 SRCDIR= ${.CURDIR}/../libpthread
-- 
2.20.1