arch/ia64/sn/kernel/idle.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (c) 2001-2003 Silicon Graphics, Inc.  All rights reserved.
   7  */
   8
   9 #include <linux/config.h>
  10 #include <asm/sn/leds.h>
  11 #include <asm/sn/simulator.h>
  12
  13 void snidle(int state) {
  14         if (state) {
  15                 if (pda->idle_flag == 0) {
  16                         /*
  17                          * Turn the activity LED off.
  18                          */
  19                         set_led_bits(0, LED_CPU_ACTIVITY);
  20                 }
  21
  22 #ifdef CONFIG_IA64_SGI_SN_SIM
  23                 if (IS_RUNNING_ON_SIMULATOR())
  24                         SIMULATOR_SLEEP();
  25 #endif
  26
  27                 pda->idle_flag = 1;
  28         } else {
  29                 /*
  30                  * Turn the activity LED on.
  31                  */
  32                 set_led_bits(LED_CPU_ACTIVITY, LED_CPU_ACTIVITY);
  33
  34                 pda->idle_flag = 0;
  35         }
  36 }