kernel-ark/include/asm-parisc/smp.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

70 lines
1.6 KiB
C

#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 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 */