OS-2366 ddi_periodic_add(9F) is entirely rubbish

*** 21,31 ****
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  /*
   * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2011, Joyent, Inc. All rights reserved.
   */
  
  #include <sys/param.h>
  #include <sys/t_lock.h>
  #include <sys/types.h>
--- 21,31 ----
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  /*
   * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2013, Joyent, Inc.  All rights reserved.
   */
  
  #include <sys/param.h>
  #include <sys/t_lock.h>
  #include <sys/types.h>
*** 945,955 ****
  }
  
  void
  clock_init(void)
  {
!         cyc_handler_t clk_hdlr, timer_hdlr, lbolt_hdlr;
          cyc_time_t clk_when, lbolt_when;
          int i, sz;
          intptr_t buf;
  
          /*
--- 945,955 ----
  }
  
  void
  clock_init(void)
  {
!         cyc_handler_t clk_hdlr, lbolt_hdlr;
          cyc_time_t clk_when, lbolt_when;
          int i, sz;
          intptr_t buf;
  
          /*
*** 961,978 ****
  
          clk_when.cyt_when = 0;
          clk_when.cyt_interval = nsec_per_tick;
  
          /*
-          * cyclic_timer is dedicated to the ddi interface, which
-          * uses the same clock resolution as the system one.
-          */
-         timer_hdlr.cyh_func = (cyc_func_t)cyclic_timer;
-         timer_hdlr.cyh_level = CY_LOCK_LEVEL;
-         timer_hdlr.cyh_arg = NULL;
- 
-         /*
           * The lbolt cyclic will be reprogramed to fire at a nsec_per_tick
           * interval to satisfy performance needs of the DDI lbolt consumers.
           * It is off by default.
           */
          lbolt_hdlr.cyh_func = (cyc_func_t)lbolt_cyclic;
--- 961,970 ----
*** 1043,1053 ****
           * Grab cpu_lock and install all three cyclics.
           */
          mutex_enter(&cpu_lock);
  
          clock_cyclic = cyclic_add(&clk_hdlr, &clk_when);
-         ddi_timer_cyclic = cyclic_add(&timer_hdlr, &clk_when);
          lb_info->id.lbi_cyclic_id = cyclic_add(&lbolt_hdlr, &lbolt_when);
  
          mutex_exit(&cpu_lock);
  }
  
--- 1035,1044 ----