1#ifndef __ASM_HARDIRQ_H
2#define __ASM_HARDIRQ_H
3
4/* only non-SMP supported */
5
6#include <linux/threads.h>
7
8/* entry.S is sensitive to the offsets of these fields */
9typedef struct {
10	unsigned int __softirq_pending;
11	unsigned int __local_irq_count;
12	unsigned int __local_bh_count;
13	unsigned int __syscall_count;
14	struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
15} ____cacheline_aligned irq_cpustat_t;
16
17#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
18
19/*
20 * Are we in an interrupt context? Either doing bottom half
21 * or hardware interrupt processing?
22 */
23#define in_interrupt()  ((local_irq_count(smp_processor_id()) + \
24			  local_bh_count(smp_processor_id())) != 0)
25#define in_irq()        (local_irq_count(smp_processor_id()) != 0)
26
27#define hardirq_trylock(cpu)    (local_irq_count(cpu) == 0)
28#define hardirq_endlock(cpu)    do { (void)(cpu); } while (0)
29
30#define irq_enter(cpu)      (local_irq_count(cpu)++)
31#define irq_exit(cpu)       (local_irq_count(cpu)--)
32
33#define synchronize_irq()       barrier()
34
35#endif /* __ASM_HARDIRQ_H */
36