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 #include <linux/cache.h>
   8
   9 /* entry.S is sensitive to the offsets of these fields */
  10 typedef struct {
  11         unsigned int __softirq_pending;
  12         unsigned int __local_irq_count;
  13         unsigned int __local_bh_count;
  14         unsigned int __syscall_count;
  15         struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
  16 } ____cacheline_aligned irq_cpustat_t;
  17
  18 #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
  19
  20 #define HARDIRQ_BITS    8
  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 irq_exit()                                                      \
  33 do {                                                                    \
  34                 preempt_count() -= IRQ_EXIT_OFFSET;                     \
  35                 if (!in_interrupt() && softirq_pending(smp_processor_id())) \
  36                         do_softirq();                                   \
  37                 preempt_enable_no_resched();                            \
  38 } while (0)
  39
  40 #endif /* __ASM_HARDIRQ_H */