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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASM_HARDIRQ_H
2#define __ASM_HARDIRQ_H
3
4#include <linux/config.h>
5#include <linux/cache.h>
6#include <linux/threads.h>
Alexey Dobriyan19f03f72006-02-01 03:06:16 -08007#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008
9typedef struct {
10 unsigned int __softirq_pending;
11} ____cacheline_aligned irq_cpustat_t;
12
13#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
14
15#define HARDIRQ_BITS 8
16
17/*
18 * The hardirq mask has to be large enough to have space
19 * for potentially all IRQ sources in the system nesting
20 * on a single CPU:
21 */
22#if (1 << HARDIRQ_BITS) < NR_IRQS
23# error HARDIRQ_BITS is too low!
24#endif
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#ifndef CONFIG_SMP
27
28extern asmlinkage void __do_softirq(void);
29
30#define irq_exit() \
31 do { \
32 preempt_count() -= IRQ_EXIT_OFFSET; \
33 if (!in_interrupt() && local_softirq_pending()) \
34 __do_softirq(); \
35 preempt_enable_no_resched(); \
36 } while (0)
37#endif
38
39
40#endif /* __ASM_HARDIRQ_H */