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 #ifdef CONFIG_X86_64
  13 #include <asm/genapic.h>
  14 #define send_IPI_mask (genapic->send_IPI_mask)
  15 #else
  16 static inline void send_IPI_mask(cpumask_t mask, int vector)
  17 {
  18         send_IPI_mask_bitmask(mask, vector);
  19 }
  20 #endif
  21
  22 static inline void __local_send_IPI_allbutself(int vector)
  23 {
  24         if (no_broadcast || vector == NMI_VECTOR) {
  25                 cpumask_t mask = cpu_online_map;
  26
  27                 cpu_clear(smp_processor_id(), mask);
  28                 send_IPI_mask(mask, vector);
  29         } else
  30                 __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
  31 }
  32
  33 static inline void __local_send_IPI_all(int vector)
  34 {
  35         if (no_broadcast || vector == NMI_VECTOR)
  36                 send_IPI_mask(cpu_online_map, vector);
  37         else
  38                 __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
  39 }
  40
  41 #ifdef CONFIG_X86_64
  42 #define send_IPI_allbutself (genapic->send_IPI_allbutself)
  43 #define send_IPI_all (genapic->send_IPI_all)
  44 #else
  45 static inline void send_IPI_allbutself(int vector)
  46 {
  47         /*
  48          * if there are no other CPUs in the system then we get an APIC send
  49          * error if we try to broadcast, thus avoid sending IPIs in this case.
  50          */
  51         if (!(num_online_cpus() > 1))
  52                 return;
  53
  54         __local_send_IPI_allbutself(vector);
  55         return;
  56 }
  57
  58 static inline void send_IPI_all(int vector)
  59 {
  60         __local_send_IPI_all(vector);
  61 }
  62 #endif
  63
  64 #endif /* __ASM_MACH_IPI_H */