arch/s390/include/asm/hardirq.h

   1 /*
   2  *  include/asm-s390/hardirq.h
   3  *
   4  *  S390 version
   5  *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
   6  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
   7  *               Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
   8  *
   9  *  Derived from "include/asm-i386/hardirq.h"
  10  */
  11
  12 #ifndef __ASM_HARDIRQ_H
  13 #define __ASM_HARDIRQ_H
  14
  15 #include <linux/threads.h>
  16 #include <linux/sched.h>
  17 #include <linux/cache.h>
  18 #include <linux/interrupt.h>
  19 #include <asm/lowcore.h>
  20
  21 /* irq_cpustat_t is unused currently, but could be converted
  22  * into a percpu variable instead of storing softirq_pending
  23  * on the lowcore */
  24 typedef struct {
  25         unsigned int __softirq_pending;
  26 } irq_cpustat_t;
  27
  28 #define local_softirq_pending() (S390_lowcore.softirq_pending)
  29
  30 #define __ARCH_IRQ_STAT
  31 #define __ARCH_HAS_DO_SOFTIRQ
  32
  33 #define HARDIRQ_BITS    8
  34
  35 void clock_comparator_work(void);
  36
  37 static inline unsigned long long local_tick_disable(void)
  38 {
  39         unsigned long long old;
  40
  41         old = S390_lowcore.clock_comparator;
  42         S390_lowcore.clock_comparator = -1ULL;
  43         return old;
  44 }
  45
  46 static inline void local_tick_enable(unsigned long long comp)
  47 {
  48         S390_lowcore.clock_comparator = comp;
  49 }
  50
  51 #endif /* __ASM_HARDIRQ_H */