File: /usr/src/linux/include/asm-cris/hardirq.h

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 */
9     typedef 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