Pull bugzilla-5534 into release branch
[linux-2.6] / include / asm-i386 / 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 */