Since locking in kern/subr_prof.c is changed a bit, we need nomore of

time_lock spinlock exported.

Approved by: jeff (mentor)

sys/kern/kern_clock.c

@@ -85,7 +85,7 @@ SYSINIT(clocks, SI_SUB_CLOCKS, SI_ORDER_FIRST, initclocks, NULL)
 long cp_time[CPUSTATES];
 
 /* Spin-lock protecting profiling statistics. */
-struct mtx time_lock;
+static struct mtx time_lock;
 
 static int
 sysctl_kern_cp_time(SYSCTL_HANDLER_ARGS)

sys/sys/systm.h

@@ -71,8 +71,6 @@ extern int bootverbose;		/* nonzero to print verbose messages */
 
 extern int maxusers;		/* system tune hint */
 
-extern struct mtx time_lock;	/* time lock for profiling */
-
 #ifdef	INVARIANTS		/* The option is always available */
 #define	KASSERT(exp,msg) do {						\
 	if (__predict_false(!(exp)))					\