projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General | |
| 3 | * Public License. See the file "COPYING" in the main directory of this | |
| 4 | * archive for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com) | |
| 7 | * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc. | |
| 8 | * Copyright (C) 2000, 2001, 2002 Ralf Baechle | |
| 9 | * Copyright (C) 2000, 2001 Broadcom Corporation | |
| 10 | */ | |
| 11 | #ifndef __ASM_SMP_H | |
| 12 | #define __ASM_SMP_H | |
| 13 | ||
| 1da177e4 LT |
14 | #include <linux/bitops.h> |
| 15 | #include <linux/linkage.h> | |
| 16 | #include <linux/threads.h> | |
| 17 | #include <linux/cpumask.h> | |
| 87353d8a | 18 | |
| 1da177e4 | 19 | #include <asm/atomic.h> |
| 87353d8a | 20 | #include <asm/smp-ops.h> |
| 1da177e4 | 21 | |
| 0ab7aefc RB |
22 | extern int smp_num_siblings; |
| 23 | extern cpumask_t cpu_sibling_map[]; | |
| 24 | ||
| 39c715b7 | 25 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 1da177e4 LT |
26 | |
| 27 | /* Map from cpu id to sequential logical cpu number. This will only | |
| 28 | not be idempotent when cpus failed to come on-line. */ | |
| 29 | extern int __cpu_number_map[NR_CPUS]; | |
| 30 | #define cpu_number_map(cpu) __cpu_number_map[cpu] | |
| 31 | ||
| 32 | /* The reverse map from sequential logical cpu number to cpu id. */ | |
| 33 | extern int __cpu_logical_map[NR_CPUS]; | |
| 34 | #define cpu_logical_map(cpu) __cpu_logical_map[cpu] | |
| 35 | ||
| 36 | #define NO_PROC_ID (-1) | |
| 37 | ||
| 1da177e4 LT |
38 | #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */ |
| 39 | #define SMP_CALL_FUNCTION 0x2 | |
| 40 | ||
| 1da177e4 LT |
41 | extern void asmlinkage smp_bootstrap(void); |
| 42 | ||
| 43 | /* | |
| 44 | * this function sends a 'reschedule' IPI to another CPU. | |
| 45 | * it goes straight through and wastes no time serializing | |
| 46 | * anything. Worst case is that we lose a reschedule ... | |
| 47 | */ | |
| 48 | static inline void smp_send_reschedule(int cpu) | |
| 49 | { | |
| 87353d8a RB |
50 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 51 | ||
| 52 | mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF); | |
| 1da177e4 LT |
53 | } |
| 54 | ||
| 55 | extern asmlinkage void smp_call_function_interrupt(void); | |
| 56 | ||
| 2f304c0a JA |
57 | extern void arch_send_call_function_single_ipi(int cpu); |
| 58 | extern void arch_send_call_function_ipi(cpumask_t mask); | |
| 59 | ||
| 1da177e4 | 60 | #endif /* __ASM_SMP_H */ |