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Sourcecode: linux-2.6 version File versions

smp.h

#ifndef __ASM_SMP_H
#define __ASM_SMP_H

#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/bitops.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 <asm/irq.h>

struct cpuinfo_alpha {
      unsigned long loops_per_jiffy;
      unsigned long last_asn;
      int need_new_asn;
      int asn_lock;
      unsigned long ipi_count;
      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

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

extern int smp_num_cpus;
#define cpu_possible_map      cpu_present_map

extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);

#else /* CONFIG_SMP */

#define hard_smp_processor_id()           0
#define smp_call_function_on_cpu(func,info,wait,cpu)    ({ 0; })

#endif /* CONFIG_SMP */

#define NO_PROC_ID      (-1)

#endif

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