LXR linux/arch/um/include/asm/system.h

   1#ifndef __UM_SYSTEM_GENERIC_H
   2#define __UM_SYSTEM_GENERIC_H
   3
   4#include "sysdep/system.h"
   5
   6extern void *switch_to(void *prev, void *next, void *last);
   7
   8extern int get_signals(void);
   9extern int set_signals(int enable);
  10extern int get_signals(void);
  11extern void block_signals(void);
  12extern void unblock_signals(void);
  13
  14#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
  15                                     (flags) = get_signals(); } while(0)
  16#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
  17                                      set_signals(flags); } while(0)
  18
  19#define local_irq_save(flags) do { local_save_flags(flags); \
  20                                   local_irq_disable(); } while(0)
  21
  22#define local_irq_enable() unblock_signals()
  23#define local_irq_disable() block_signals()
  24
  25#define irqs_disabled()                 \
  26({                                      \
  27        unsigned long flags;            \
  28        local_save_flags(flags);        \
  29        (flags == 0);                   \
  30})
  31
  32extern void *_switch_to(void *prev, void *next, void *last);
  33#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
  34
  35#endif
  36