XXXX pass in cpu_pause_func via pause_cpus

@@ -353,11 +353,11 @@
 
         /*
          * We're changing around the hierarchy, which is actively traversed
          * by the dispatcher. Pause CPUS to ensure exclusivity.
          */
-        pause_cpus(NULL);
+        pause_cpus(NULL, NULL);
 
         /*
          * If necessary, update the parent's sibling set, replacing parent
          * with PG.
          */

@@ -1553,11 +1553,11 @@
 
         /*
          * We're operating on the PG hierarchy. Pause CPUs to ensure
          * exclusivity with respect to the dispatcher.
          */
-        pause_cpus(NULL);
+        pause_cpus(NULL, NULL);
 
         /*
          * Prune all PG instances of the hardware sharing relationship
          * represented by pg.
          */

@@ -1673,11 +1673,11 @@
 {
         cpu_t           *cpu;
 
         ASSERT(MUTEX_HELD(&cpu_lock));
 
-        pause_cpus(NULL);
+        pause_cpus(NULL, NULL);
         cpu = cpu_list;
 
         do {
                 if (cpu->cpu_pg)
                         group_empty(&cpu->cpu_pg->cmt_pgs);