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Software of the Month Club 2000 October
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Software of the Month - Ultimate Collection Shareware 277.iso
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pc
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PROGRAMS
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UTILITY
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WINLINUX
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DATA1.CAB
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programs_-_include
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ASM-MIPS
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HARDIRQ.H
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C/C++ Source or Header
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1999-09-17
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989b
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39 lines
/* $Id: hardirq.h,v 1.5 1998/08/29 21:20:21 ralf Exp $
*
* 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) 1997, 1998 by Ralf Baechle
*/
#ifndef __ASM_MIPS_HARDIRQ_H
#define __ASM_MIPS_HARDIRQ_H
#include <linux/tasks.h>
extern unsigned int local_irq_count[NR_CPUS];
/*
* Are we in an interrupt context? Either doing bottom half
* or hardware interrupt processing?
*/
#define in_interrupt() ({ int __cpu = smp_processor_id(); \
(local_irq_count[__cpu] + local_bh_count[__cpu] != 0); })
#ifndef __SMP__
#define hardirq_trylock(cpu) (local_irq_count[cpu] == 0)
#define hardirq_endlock(cpu) do { } while (0)
#define hardirq_enter(cpu) (local_irq_count[cpu]++)
#define hardirq_exit(cpu) (local_irq_count[cpu]--)
#define synchronize_irq() barrier();
#else
#error No habla MIPS SMP
#endif /* __SMP__ */
#endif /* __ASM_MIPS_HARDIRQ_H */