1. 根目录:
2. arch
3. hexagon
4. include
5. asm
6. smp.h

/*
 * SMP definitions for the Hexagon architecture
 *
 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef __ASM_SMP_H
#define __ASM_SMP_H

#include <linux/cpumask.h>

#define raw_smp_processor_id() (current_thread_info()->cpu)

enum ipi_message_type {
	IPI_NOP = 0,
	IPI_RESCHEDULE = 1,
	IPI_CALL_FUNC,
	IPI_CALL_FUNC_SINGLE,
	IPI_CPU_STOP,
	IPI_TIMER,
};

extern void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg);
extern void smp_start_cpus(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);

extern void smp_vm_unmask_irq(void *info);

#endif