arch/blackfin/include/asm/hardirq.h

   1 #ifndef __BFIN_HARDIRQ_H
   2 #define __BFIN_HARDIRQ_H
   3
   4 #include <linux/cache.h>
   5 #include <linux/threads.h>
   6 #include <asm/irq.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 /*
  17  * We put the hardirq and softirq counter into the preemption
  18  * counter. The bitmask has the following meaning:
  19  *
  20  * - bits 0-7 are the preemption count (max preemption depth: 256)
  21  * - bits 8-15 are the softirq count (max # of softirqs: 256)
  22  * - bits 16-23 are the hardirq count (max # of hardirqs: 256)
  23  *
  24  * - ( bit 26 is the PREEMPT_ACTIVE flag. )
  25  *
  26  * PREEMPT_MASK: 0x000000ff
  27  * HARDIRQ_MASK: 0x0000ff00
  28  * SOFTIRQ_MASK: 0x00ff0000
  29  */
  30
  31 #if NR_IRQS > 256
  32 #define HARDIRQ_BITS    9
  33 #else
  34 #define HARDIRQ_BITS    8
  35 #endif
  36
  37 #ifdef NR_IRQS
  38 # if (1 << HARDIRQ_BITS) < NR_IRQS
  39 # error HARDIRQ_BITS is too low!
  40 # endif
  41 #endif
  42
  43 #define __ARCH_IRQ_EXIT_IRQS_DISABLED   1
  44
  45 extern void ack_bad_irq(unsigned int irq);
  46
  47 #endif