Index: include/cpu.h
===================================================================
RCS file: /cvs/src/sys/arch/alpha/include/cpu.h,v
retrieving revision 1.53
diff -u -p -r1.53 cpu.h
--- include/cpu.h	11 Jul 2014 10:53:07 -0000	1.53
+++ include/cpu.h	17 Dec 2014 05:44:03 -0000
@@ -185,7 +185,6 @@ struct cpu_info {
 #ifdef DIAGNOSTIC
 	int	ci_mutex_level;
 #endif
-	struct simplelock ci_slock;	/* lock on this data structure */
 	cpuid_t ci_cpuid;		/* our CPU ID */
 	struct cpu_info *ci_next;
 	u_int32_t ci_randseed;
Index: alpha/cpu.c
===================================================================
RCS file: /cvs/src/sys/arch/alpha/alpha/cpu.c,v
retrieving revision 1.36
diff -u -p -r1.36 cpu.c
--- alpha/cpu.c	8 May 2014 20:46:49 -0000	1.36
+++ alpha/cpu.c	17 Dec 2014 05:44:03 -0000
@@ -298,7 +298,6 @@ recognized:
 		ci = malloc(sizeof(*ci), M_DEVBUF, M_WAITOK | M_ZERO);
 
 	cpu_info[ma->ma_slot] = ci;
-	simple_lock_init(&ci->ci_slock);
 #else
 	ci = &cpu_info_primary;
 #endif