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File: [Development] / linux-2.6-xfs / include / asm-sparc / Attic / hardirq.h (download)

Revision 1.5, Wed Jan 5 14:17:31 2005 UTC (12 years, 9 months ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.4: +0 -21 lines 

Merge up to 2.6.10.
Merge of 2.6.x-xfs-melb:linux:21010a by kenmcd.

/* hardirq.h: 32-bit Sparc hard IRQ support.
 *
 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1998-2000 Anton Blanchard (anton@samba.org)
 */

#ifndef __SPARC_HARDIRQ_H
#define __SPARC_HARDIRQ_H

#include <linux/config.h>
#include <linux/threads.h>
#include <linux/spinlock.h>
#include <linux/cache.h>

/* entry.S is sensitive to the offsets of these fields */ /* XXX P3 Is it? */
typedef struct {
	unsigned int __softirq_pending;
} ____cacheline_aligned irq_cpustat_t;

#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */

#define HARDIRQ_BITS    8

#define irq_enter()             (preempt_count() += HARDIRQ_OFFSET)
#define irq_exit()                                                      \
do {                                                                    \
                preempt_count() -= IRQ_EXIT_OFFSET;                     \
                if (!in_interrupt() && softirq_pending(smp_processor_id())) \
                        do_softirq();                                   \
                preempt_enable_no_resched();                            \
} while (0)

#endif /* __SPARC_HARDIRQ_H */