smp.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- #ifndef __ASM_SMP_H
- #define __ASM_SMP_H
- #include <linux/config.h>
- #include <asm/pal.h>
- /* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
- static __inline__ unsigned char
- __hard_smp_processor_id(void)
- {
- register unsigned char __r0 __asm__("$0");
- __asm__ __volatile__(
- "call_pal %1 #whami"
- : "=r"(__r0)
- :"i" (PAL_whami)
- : "$1", "$22", "$23", "$24", "$25");
- return __r0;
- }
- #ifdef CONFIG_SMP
- #include <linux/threads.h>
- #include <asm/irq.h>
- struct cpuinfo_alpha {
- unsigned long loops_per_jiffy;
- unsigned long last_asn;
- int need_new_asn;
- int asn_lock;
- unsigned long *pgd_cache;
- unsigned long *pmd_cache;
- unsigned long *pte_cache;
- unsigned long pgtable_cache_sz;
- unsigned long ipi_count;
- unsigned long irq_attempt[NR_IRQS];
- unsigned long prof_multiplier;
- unsigned long prof_counter;
- unsigned char mcheck_expected;
- unsigned char mcheck_taken;
- unsigned char mcheck_extra;
- } __attribute__((aligned(64)));
- extern struct cpuinfo_alpha cpu_data[NR_CPUS];
- #define PROC_CHANGE_PENALTY 20
- /* Map from cpu id to sequential logical cpu number. This will only
- not be idempotent when cpus failed to come on-line. */
- extern int __cpu_number_map[NR_CPUS];
- #define cpu_number_map(cpu) __cpu_number_map[cpu]
- /* The reverse map from sequential logical cpu number to cpu id. */
- extern int __cpu_logical_map[NR_CPUS];
- #define cpu_logical_map(cpu) __cpu_logical_map[cpu]
- #define hard_smp_processor_id() __hard_smp_processor_id()
- #define smp_processor_id() (current->processor)
- extern unsigned long cpu_present_mask;
- #define cpu_online_map cpu_present_mask
- extern int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, unsigned long cpu);
- #else /* CONFIG_SMP */
- #define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; })
- #endif /* CONFIG_SMP */
- #define NO_PROC_ID (-1)
- #endif