Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_SMP_H |
| 2 | #define __ASM_SMP_H |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | /* |
| 21 | * Private routines/data |
| 22 | * |
| 23 | * physical and logical are equivalent until we support CPU hotplug. |
| 24 | */ |
| 25 | #define cpu_number_map(cpu) (cpu) |
| 26 | #define cpu_logical_map(cpu) (cpu) |
| 27 | |
| 28 | extern void smp_send_reschedule(int cpu); |
James Bottomley | d911aed | 2005-11-17 16:27:02 -0500 | [diff] [blame] | 29 | extern void smp_send_all_nop(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Jens Axboe | dbcf478 | 2008-06-10 20:50:56 +0200 | [diff] [blame] | 31 | extern void arch_send_call_function_single_ipi(int cpu); |
Rusty Russell | 91887a3 | 2009-03-16 14:19:37 +1030 | [diff] [blame] | 32 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
Jens Axboe | dbcf478 | 2008-06-10 20:50:56 +0200 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #endif /* !ASSEMBLY */ |
| 35 | |
| 36 | /* |
| 37 | * This magic constant controls our willingness to transfer |
| 38 | * a process across CPUs. Such a transfer incurs cache and tlb |
| 39 | * misses. The current value is inherited from i386. Still needs |
| 40 | * to be tuned for parisc. |
| 41 | */ |
| 42 | |
| 43 | #define PROC_CHANGE_PENALTY 15 /* Schedule penalty */ |
| 44 | |
Ingo Molnar | 39c715b | 2005-06-21 17:14:34 -0700 | [diff] [blame] | 45 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
Kyle McMartin | 1d4c452 | 2005-11-17 16:27:44 -0500 | [diff] [blame] | 47 | #else /* CONFIG_SMP */ |
| 48 | |
| 49 | static inline void smp_send_all_nop(void) { return; } |
| 50 | |
| 51 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 54 | #define ANY_PROC_ID 0xFF /* Any processor magic marker */ |
| 55 | static inline int __cpu_disable (void) { |
| 56 | return 0; |
| 57 | } |
| 58 | static inline void __cpu_die (unsigned int cpu) { |
| 59 | while(1) |
| 60 | ; |
| 61 | } |
| 62 | extern int __cpu_up (unsigned int cpu); |
| 63 | |
| 64 | #endif /* __ASM_SMP_H */ |