include/asm-m32r/hardirq.h

   1 #ifndef __ASM_HARDIRQ_H
   2 #define __ASM_HARDIRQ_H
   3
   4 #include <linux/config.h>
   5 #include <linux/threads.h>
   6 #include <linux/irq.h>
   7
   8 typedef struct {
   9         unsigned int __softirq_pending;
  10         unsigned int __syscall_count;
  11         struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
  12 } ____cacheline_aligned irq_cpustat_t;
  13
  14 #include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
  15
  16 #if NR_IRQS > 256
  17 #define HARDIRQ_BITS    9
  18 #else
  19 #define HARDIRQ_BITS    8
  20 #endif
  21
  22 /*
  23  * The hardirq mask has to be large enough to have
  24  * space for potentially all IRQ sources in the system
  25  * nesting on a single CPU:
  26  */
  27 #if (1 << HARDIRQ_BITS) < NR_IRQS
  28 # error HARDIRQ_BITS is too low!
  29 #endif
  30
  31 #define irq_enter()             (preempt_count() += HARDIRQ_OFFSET)
  32 #define nmi_enter()             (irq_enter())
  33 #define nmi_exit()              (preempt_count() -= HARDIRQ_OFFSET)
  34
  35 #define irq_exit()                                                      \
  36 do {                                                                    \
  37                 preempt_count() -= IRQ_EXIT_OFFSET;                     \
  38                 if (!in_interrupt() && softirq_pending(smp_processor_id())) \
  39                         do_softirq();                                   \
  40                 preempt_enable_no_resched();                            \
  41 } while (0)
  42
  43 #endif /* __ASM_HARDIRQ_H */