projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ASM_SMP_H |
| 2 | #define __ASM_SMP_H | |
| 3 | ||
| 1da177e4 LT |
4 | |
| 5 | #if defined(CONFIG_SMP) | |
| 6 | ||
| 7 | /* Page Zero Location PDC will look for the address to branch to when we poke | |
| 8 | ** slave CPUs still in "Icache loop". | |
| 9 | */ | |
| 10 | #define PDC_OS_BOOT_RENDEZVOUS 0x10 | |
| 11 | #define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 | |
| 12 | ||
| 13 | #ifndef ASSEMBLY | |
| 14 | #include <linux/bitops.h> | |
| 15 | #include <linux/threads.h> /* for NR_CPUS */ | |
| 16 | #include <linux/cpumask.h> | |
| 17 | typedef unsigned long address_t; | |
| 18 | ||
| 19 | extern cpumask_t cpu_online_map; | |
| 20 | ||
| 21 | ||
| 22 | /* | |
| 23 | * Private routines/data | |
| 24 | * | |
| 25 | * physical and logical are equivalent until we support CPU hotplug. | |
| 26 | */ | |
| 27 | #define cpu_number_map(cpu) (cpu) | |
| 28 | #define cpu_logical_map(cpu) (cpu) | |
| 29 | ||
| 30 | extern void smp_send_reschedule(int cpu); | |
| d911aed8 | 31 | extern void smp_send_all_nop(void); |
| 1da177e4 | 32 | |
| dbcf4787 JA |
33 | extern void arch_send_call_function_single_ipi(int cpu); |
| 34 | extern void arch_send_call_function_ipi(cpumask_t mask); | |
| 35 | ||
| 1da177e4 LT |
36 | #endif /* !ASSEMBLY */ |
| 37 | ||
| 38 | /* | |
| 39 | * This magic constant controls our willingness to transfer | |
| 40 | * a process across CPUs. Such a transfer incurs cache and tlb | |
| 41 | * misses. The current value is inherited from i386. Still needs | |
| 42 | * to be tuned for parisc. | |
| 43 | */ | |
| 44 | ||
| 45 | #define PROC_CHANGE_PENALTY 15 /* Schedule penalty */ | |
| 46 | ||
| 1da177e4 LT |
47 | extern unsigned long cpu_present_mask; |
| 48 | ||
| 39c715b7 | 49 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 1da177e4 | 50 | |
| 1d4c452a KM |
51 | #else /* CONFIG_SMP */ |
| 52 | ||
| 53 | static inline void smp_send_all_nop(void) { return; } | |
| 54 | ||
| 55 | #endif | |
| 1da177e4 LT |
56 | |
| 57 | #define NO_PROC_ID 0xFF /* No processor magic marker */ | |
| 58 | #define ANY_PROC_ID 0xFF /* Any processor magic marker */ | |
| 59 | static inline int __cpu_disable (void) { | |
| 60 | return 0; | |
| 61 | } | |
| 62 | static inline void __cpu_die (unsigned int cpu) { | |
| 63 | while(1) | |
| 64 | ; | |
| 65 | } | |
| 66 | extern int __cpu_up (unsigned int cpu); | |
| 67 | ||
| 68 | #endif /* __ASM_SMP_H */ |