include/asm-h8300/hardirq.h

   1 #ifndef __H8300_HARDIRQ_H
   2 #define __H8300_HARDIRQ_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/config.h>
   6 #include <linux/threads.h>
   7 #include <linux/interrupt.h>
   8 #include <linux/irq.h>
   9
  10 typedef struct {
  11         unsigned int __softirq_pending;
  12         unsigned int __syscall_count;
  13         struct task_struct * __ksoftirqd_task;
  14 } ____cacheline_aligned irq_cpustat_t;
  15
  16 #include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
  17
  18 #define HARDIRQ_BITS    8
  19
  20 /*
  21  * The hardirq mask has to be large enough to have
  22  * space for potentially all IRQ sources in the system
  23  * nesting on a single CPU:
  24  */
  25 #if (1 << HARDIRQ_BITS) < NR_IRQS
  26 # error HARDIRQ_BITS is too low!
  27 #endif
  28
  29 #define irq_enter()             (preempt_count() += HARDIRQ_OFFSET)
  30 #define irq_exit()                                                      \
  31 do {                                                                    \
  32                 preempt_count() -= IRQ_EXIT_OFFSET;                     \
  33                 if (!in_interrupt() && softirq_pending(smp_processor_id())) \
  34                         do_softirq();                                   \
  35                 preempt_enable_no_resched();                            \
  36 } while (0)
  37
  38 #endif