include/asm-x86/mach-default/mach_ipi.h

   1 #ifndef __ASM_MACH_IPI_H
   2 #define __ASM_MACH_IPI_H
   3
   4 /* Avoid include hell */
   5 #define NMI_VECTOR 0x02
   6
   7 void send_IPI_mask_bitmask(cpumask_t mask, int vector);
   8 void __send_IPI_shortcut(unsigned int shortcut, int vector);
   9
  10 extern int no_broadcast;
  11
  12 static inline void send_IPI_mask(cpumask_t mask, int vector)
  13 {
  14         send_IPI_mask_bitmask(mask, vector);
  15 }
  16
  17 static inline void __local_send_IPI_allbutself(int vector)
  18 {
  19         if (no_broadcast || vector == NMI_VECTOR) {
  20                 cpumask_t mask = cpu_online_map;
  21
  22                 cpu_clear(smp_processor_id(), mask);
  23                 send_IPI_mask(mask, vector);
  24         } else
  25                 __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
  26 }
  27
  28 static inline void __local_send_IPI_all(int vector)
  29 {
  30         if (no_broadcast || vector == NMI_VECTOR)
  31                 send_IPI_mask(cpu_online_map, vector);
  32         else
  33                 __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
  34 }
  35
  36 static inline void send_IPI_allbutself(int vector)
  37 {
  38         /*
  39          * if there are no other CPUs in the system then we get an APIC send
  40          * error if we try to broadcast, thus avoid sending IPIs in this case.
  41          */
  42         if (!(num_online_cpus() > 1))
  43                 return;
  44
  45         __local_send_IPI_allbutself(vector);
  46         return;
  47 }
  48
  49 static inline void send_IPI_all(int vector)
  50 {
  51         __local_send_IPI_all(vector);
  52 }
  53
  54 #endif /* __ASM_MACH_IPI_H */