tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1#ifndef __ASM_SMP_H
2#define __ASM_SMP_H
3
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>
17typedef unsigned long address_t;
18
19extern 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
30extern void smp_send_reschedule(int cpu);
31extern void smp_send_all_nop(void);
32
33extern void arch_send_call_function_single_ipi(int cpu);
34extern void arch_send_call_function_ipi(cpumask_t mask);
35
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
47extern unsigned long cpu_present_mask;
48
49#define raw_smp_processor_id() (current_thread_info()->cpu)
50
51#else /* CONFIG_SMP */
52
53static inline void smp_send_all_nop(void) { return; }
54
55#endif
56
57#define NO_PROC_ID 0xFF /* No processor magic marker */
58#define ANY_PROC_ID 0xFF /* Any processor magic marker */
59static inline int __cpu_disable (void) {
60 return 0;
61}
62static inline void __cpu_die (unsigned int cpu) {
63 while(1)
64 ;
65}
66extern int __cpu_up (unsigned int cpu);
67
68#endif /* __ASM_SMP_H */