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; |
| 8b646bd7 | 19 | |
| 8239c25f | 20 | extern int __cpu_up(unsigned int cpu, struct task_struct *tidle); |
| dbd70fb4 | 21 | |
| ca9fc75a | 22 | extern void arch_send_call_function_single_ipi(int cpu); |
| 630cd046 | 23 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
| ca9fc75a | 24 | |
| 8b646bd7 MS |
25 | extern void smp_call_online_cpu(void (*func)(void *), void *); |
| 26 | extern void smp_call_ipl_cpu(void (*func)(void *), void *); | |
| 2c2df118 | 27 | |
| 8b646bd7 MS |
28 | extern int smp_find_processor_id(u16 address); |
| 29 | extern int smp_store_status(int cpu); | |
| 30 | extern int smp_vcpu_scheduled(int cpu); | |
| 31 | extern void smp_yield_cpu(int cpu); | |
| 32 | extern void smp_yield(void); | |
| 33 | extern void smp_stop_cpu(void); | |
| 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 | ||
| 8b646bd7 | 40 | static inline void smp_call_ipl_cpu(void (*func)(void *), void *data) |
| 2c2df118 HC |
41 | { |
| 42 | func(data); | |
| 43 | } | |
| 44 | ||
| 8b646bd7 | 45 | static inline void smp_call_online_cpu(void (*func)(void *), void *data) |
| 1943f53c | 46 | { |
| 8b646bd7 | 47 | func(data); |
| 1943f53c MH |
48 | } |
| 49 | ||
| 0d0e471b | 50 | static inline int smp_find_processor_id(u16 address) { return 0; } |
| 29a877fa | 51 | static inline int smp_store_status(int cpu) { return 0; } |
| 8b646bd7 MS |
52 | static inline int smp_vcpu_scheduled(int cpu) { return 1; } |
| 53 | static inline void smp_yield_cpu(int cpu) { } | |
| 54 | static inline void smp_yield(void) { } | |
| d80512f8 | 55 | static inline void smp_fill_possible_mask(void) { } |
| 59b69787 | 56 | |
| e7c46c66 HC |
57 | static inline void smp_stop_cpu(void) |
| 58 | { | |
| 59 | u16 pcpu = stap(); | |
| 60 | ||
| 61 | for (;;) { | |
| 62 | __pcpu_sigp(pcpu, SIGP_STOP, 0, NULL); | |
| 63 | cpu_relax(); | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| c20c89a6 | 67 | #endif /* CONFIG_SMP */ |
| 1da177e4 | 68 | |
| 1e489518 HC |
69 | #ifdef CONFIG_HOTPLUG_CPU |
| 70 | extern int smp_rescan_cpus(void); | |
| da7f51c1 | 71 | extern void __noreturn cpu_die(void); |
| 8b646bd7 MS |
72 | extern void __cpu_die(unsigned int cpu); |
| 73 | extern int __cpu_disable(void); | |
| 1e489518 HC |
74 | #else |
| 75 | static inline int smp_rescan_cpus(void) { return 0; } | |
| da7f51c1 | 76 | static inline void cpu_die(void) { } |
| 1e489518 HC |
77 | #endif |
| 78 | ||
| c20c89a6 | 79 | #endif /* __ASM_SMP_H */ |