include/asm-i386/mach-default/mach_ipi.h

   1 #ifndef __ASM_MACH_IPI_H
   2 #define __ASM_MACH_IPI_H
   3
   4 void send_IPI_mask_bitmask(cpumask_t mask, int vector);
   5 void __send_IPI_shortcut(unsigned int shortcut, int vector);
   6
   7 extern int no_broadcast;
   8
   9 static inline void send_IPI_mask(cpumask_t mask, int vector)
  10 {
  11         send_IPI_mask_bitmask(mask, vector);
  12 }
  13
  14 static inline void __local_send_IPI_allbutself(int vector)
  15 {
  16         if (no_broadcast) {
  17                 cpumask_t mask = cpu_online_map;
  18
  19                 cpu_clear(smp_processor_id(), mask);
  20                 send_IPI_mask(mask, vector);
  21         } else
  22                 __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
  23 }
  24
  25 static inline void __local_send_IPI_all(int vector)
  26 {
  27         if (no_broadcast)
  28                 send_IPI_mask(cpu_online_map, vector);
  29         else
  30                 __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
  31 }
  32
  33 static inline void send_IPI_allbutself(int vector)
  34 {
  35         /*
  36          * if there are no other CPUs in the system then we get an APIC send
  37          * error if we try to broadcast, thus avoid sending IPIs in this case.
  38          */
  39         if (!(num_online_cpus() > 1))
  40                 return;
  41
  42         __local_send_IPI_allbutself(vector);
  43         return;
  44 }
  45
  46 static inline void send_IPI_all(int vector)
  47 {
  48         __local_send_IPI_all(vector);
  49 }
  50
  51 #endif /* __ASM_MACH_IPI_H */