summaryrefslogblamecommitdiff
path: root/include/asm-parisc/smp.h
blob: 9413f67a540bb24ae2b2d2866a48c3fc8dc1a37a (plain) (tree) 
1da177e4c3f4





















































39c715b71740 ^

1da177e4c3f4















1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

54

55
56
57
58
59
60
61
62
63
64
65
66
67
68
69





















































                                                                             
                                                            














                                                                                
#ifndef __ASM_SMP_H
#define __ASM_SMP_H

#include <linux/config.h>

#if defined(CONFIG_SMP)

/* Page Zero Location PDC will look for the address to branch to when we poke
** slave CPUs still in "Icache loop".
*/
#define PDC_OS_BOOT_RENDEZVOUS     0x10
#define PDC_OS_BOOT_RENDEZVOUS_HI  0x28

#ifndef ASSEMBLY
#include <linux/bitops.h>
#include <linux/threads.h>	/* for NR_CPUS */
#include <linux/cpumask.h>
typedef unsigned long address_t;

extern cpumask_t cpu_online_map;


/*
 *	Private routines/data
 *
 *	physical and logical are equivalent until we support CPU hotplug.
 */
#define cpu_number_map(cpu)	(cpu)
#define cpu_logical_map(cpu)	(cpu)

extern void smp_send_reschedule(int cpu);

#endif /* !ASSEMBLY */

/*
 *	This magic constant controls our willingness to transfer
 *      a process across CPUs. Such a transfer incurs cache and tlb
 *      misses. The current value is inherited from i386. Still needs
 *      to be tuned for parisc.
 */
 
#define PROC_CHANGE_PENALTY	15		/* Schedule penalty */

#undef ENTRY_SYS_CPUS
#ifdef ENTRY_SYS_CPUS
#define STATE_RENDEZVOUS			0
#define STATE_STOPPED 				1 
#define STATE_RUNNING				2
#define STATE_HALTED				3
#endif

extern unsigned long cpu_present_mask;

#define raw_smp_processor_id()	(current_thread_info()->cpu)

#endif /* CONFIG_SMP */

#define NO_PROC_ID		0xFF		/* No processor magic marker */
#define ANY_PROC_ID		0xFF		/* Any processor magic marker */
static inline int __cpu_disable (void) {
  return 0;
}
static inline void __cpu_die (unsigned int cpu) {
  while(1)
    ;
}
extern int __cpu_up (unsigned int cpu);

#endif /*  __ASM_SMP_H */