idle.c

linux-2.4.29操作系统的源码

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (c) 2001-2003 Silicon Graphics, Inc.  All rights reserved.
 */

#include <linux/config.h>
#include <asm/sn/leds.h>
#include <asm/sn/simulator.h>

void snidle(int state) {
	if (state) {
		if (pda.idle_flag == 0) {
			/* 
			 * Turn the activity LED off.
			 */
			set_led_bits(0, LED_CPU_ACTIVITY);
		}

#ifdef CONFIG_IA64_SGI_SN_SIM
		if (IS_RUNNING_ON_SIMULATOR())
			SIMULATOR_SLEEP();
#endif

		pda.idle_flag = 1;
	} else {
		/* 
		 * Turn the activity LED on.
		 */
		set_led_bits(LED_CPU_ACTIVITY, LED_CPU_ACTIVITY);

		pda.idle_flag = 0;
	}
}