1 #ifndef __ASM_HARDIRQ_H
2 #define __ASM_HARDIRQ_H
4 #include <linux/config.h>
5 #include <linux/cache.h>
6 #include <linux/threads.h>
9 unsigned int __softirq_pending;
10 unsigned int __local_irq_count;
11 unsigned int __local_bh_count;
12 unsigned int __syscall_count;
13 struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
14 } ____cacheline_aligned irq_cpustat_t;
16 #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
18 #define HARDIRQ_BITS 8
21 * The hardirq mask has to be large enough to have space
22 * for potentially all IRQ sources in the system nesting
25 #if (1 << HARDIRQ_BITS) < NR_IRQS
26 # error HARDIRQ_BITS is too low!
29 #define irq_enter() (preempt_count() += HARDIRQ_OFFSET)
34 preempt_count() -= HARDIRQ_OFFSET; \
35 if (!in_interrupt() && softirq_pending(smp_processor_id())) \
36 __asm__("bl%? __do_softirq": : : "lr");/* out of line */\
37 preempt_enable_no_resched(); \
42 #endif /* __ASM_HARDIRQ_H */