include/asm-m68knommu/hardirq.h

   1 #ifndef __M68K_HARDIRQ_H
   2 #define __M68K_HARDIRQ_H
   3
   4 #include <linux/config.h>
   5 #include <linux/cache.h>
   6 #include <linux/threads.h>
   7
   8 typedef struct {
   9         unsigned int __softirq_pending;
  10         unsigned int __syscall_count;
  11         struct task_struct * __ksoftirqd_task;
  12 } ____cacheline_aligned irq_cpustat_t;
  13
  14 #include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
  15
  16 #define HARDIRQ_BITS    8
  17
  18 /*
  19  * The hardirq mask has to be large enough to have
  20  * space for potentially all IRQ sources in the system
  21  * nesting on a single CPU:
  22  */
  23 #if (1 << HARDIRQ_BITS) < NR_IRQS
  24 # error HARDIRQ_BITS is too low!
  25 #endif
  26
  27 #define irq_enter()             (preempt_count() += HARDIRQ_OFFSET)
  28 #define irq_exit()                                                      \
  29 do {                                                                    \
  30                 preempt_count() -= IRQ_EXIT_OFFSET;                     \
  31                 if (!in_interrupt() && softirq_pending(smp_processor_id())) \
  32                         do_softirq();                                   \
  33                 preempt_enable_no_resched();                            \
  34 } while (0)
  35
  36 #endif /* __M68K_HARDIRQ_H */