smp.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- #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/threads.h> /* for NR_CPUS */
- typedef unsigned long address_t;
- extern volatile unsigned long 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
- #define smp_processor_id() (current->processor)
- #endif /* CONFIG_SMP */
- #define NO_PROC_ID 0xFF /* No processor magic marker */
- #define ANY_PROC_ID 0xFF /* Any processor magic marker */
- #endif /* __ASM_SMP_H */