--- src/sys/i386/i386/Attic/trap.c	2005/11/21 21:59:47	1.67
+++ src/sys/i386/i386/Attic/trap.c	2005/11/21 22:54:15	1.68
@@ -167,10 +167,12 @@ SYSCTL_INT(_machdep, OID_AUTO, fast_rele
 static int slow_release;
 SYSCTL_INT(_machdep, OID_AUTO, slow_release, CTLFLAG_RW,
 	&slow_release, 0, "Passive Release was nonoptimal");
+#ifdef SMP
 static int syscall_mpsafe = 0;
 SYSCTL_INT(_kern, OID_AUTO, syscall_mpsafe, CTLFLAG_RW,
 	&syscall_mpsafe, 0, "Allow MPSAFE marked syscalls to run without BGL");
 TUNABLE_INT("kern.syscall_mpsafe", &syscall_mpsafe);
+#endif
 
 MALLOC_DEFINE(M_SYSMSG, "sysmsg", "sysmsg structure");
 extern int max_sysmsg;