projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| a53c8fab | 2 | * Copyright IBM Corp. 1999, 2012 |
| c20c89a6 HC |
3 | * Author(s): Denis Joseph Barrow, |
| 4 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, | |
| 5 | * Heiko Carstens <heiko.carstens@de.ibm.com>, | |
| 1da177e4 LT |
6 | */ |
| 7 | #ifndef __ASM_SMP_H | |
| 8 | #define __ASM_SMP_H | |
| 9 | ||
| e7c46c66 HC |
10 | #include <asm/sigp.h> |
| 11 | ||
| c20c89a6 | 12 | #ifdef CONFIG_SMP |
| 1da177e4 | 13 | |
| a0616cde | 14 | #include <asm/lowcore.h> |
| 2b67fc46 | 15 | |
| 7b468488 | 16 | #define raw_smp_processor_id() (S390_lowcore.cpu_nr) |
| 1da177e4 | 17 | |
| dbd70fb4 | 18 | extern struct mutex smp_cpu_state_mutex; |
| 10ad34bc MS |
19 | extern unsigned int smp_cpu_mt_shift; |
| 20 | extern unsigned int smp_cpu_mtid; | |
| 8b646bd7 | 21 | |
| 8239c25f | 22 | extern int __cpu_up(unsigned int cpu, struct task_struct *tidle); |
| dbd70fb4 | 23 | |
| ca9fc75a | 24 | extern void arch_send_call_function_single_ipi(int cpu); |
| 630cd046 | 25 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
| ca9fc75a | 26 | |
| 8b646bd7 MS |
27 | extern void smp_call_online_cpu(void (*func)(void *), void *); |
| 28 | extern void smp_call_ipl_cpu(void (*func)(void *), void *); | |
| 2c2df118 | 29 | |
| 8b646bd7 MS |
30 | extern int smp_find_processor_id(u16 address); |
| 31 | extern int smp_store_status(int cpu); | |
| 32 | extern int smp_vcpu_scheduled(int cpu); | |
| 33 | extern void smp_yield_cpu(int cpu); | |
| 50ab9a9a HC |
34 | extern void smp_cpu_set_polarization(int cpu, int val); |
| 35 | extern int smp_cpu_get_polarization(int cpu); | |
| d80512f8 | 36 | extern void smp_fill_possible_mask(void); |
| 59b69787 | 37 | |
| 2c2df118 HC |
38 | #else /* CONFIG_SMP */ |
| 39 | ||
| 10ad34bc MS |
40 | #define smp_cpu_mtid 0 |
| 41 | ||
| 8b646bd7 | 42 | static inline void smp_call_ipl_cpu(void (*func)(void *), void *data) |
| 2c2df118 HC |
43 | { |
| 44 | func(data); | |
| 45 | } | |
| 46 | ||
| 8b646bd7 | 47 | static inline void smp_call_online_cpu(void (*func)(void *), void *data) |
| 1943f53c | 48 | { |
| 8b646bd7 | 49 | func(data); |
| 1943f53c MH |
50 | } |
| 51 | ||
| 0d0e471b | 52 | static inline int smp_find_processor_id(u16 address) { return 0; } |
| 29a877fa | 53 | static inline int smp_store_status(int cpu) { return 0; } |
| 8b646bd7 MS |
54 | static inline int smp_vcpu_scheduled(int cpu) { return 1; } |
| 55 | static inline void smp_yield_cpu(int cpu) { } | |
| d80512f8 | 56 | static inline void smp_fill_possible_mask(void) { } |
| 59b69787 | 57 | |
| f4192bf2 MH |
58 | #endif /* CONFIG_SMP */ |
| 59 | ||
| e7c46c66 HC |
60 | static inline void smp_stop_cpu(void) |
| 61 | { | |
| 62 | u16 pcpu = stap(); | |
| 63 | ||
| 64 | for (;;) { | |
| 65 | __pcpu_sigp(pcpu, SIGP_STOP, 0, NULL); | |
| 66 | cpu_relax(); | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 1e489518 HC |
70 | #ifdef CONFIG_HOTPLUG_CPU |
| 71 | extern int smp_rescan_cpus(void); | |
| da7f51c1 | 72 | extern void __noreturn cpu_die(void); |
| 8b646bd7 MS |
73 | extern void __cpu_die(unsigned int cpu); |
| 74 | extern int __cpu_disable(void); | |
| 1e489518 HC |
75 | #else |
| 76 | static inline int smp_rescan_cpus(void) { return 0; } | |
| da7f51c1 | 77 | static inline void cpu_die(void) { } |
| 1e489518 HC |
78 | #endif |
| 79 | ||
| c20c89a6 | 80 | #endif /* __ASM_SMP_H */ |