root/include/asm-x86/mach-default/mach_ipi.h

INCLUDED FROM

DEFINITIONS

1. send_IPI_mask
2. __local_send_IPI_allbutself
3. __local_send_IPI_all
4. send_IPI_allbutself
5. send_IPI_all

#ifndef ASM_X86__MACH_DEFAULT__MACH_IPI_H
#define ASM_X86__MACH_DEFAULT__MACH_IPI_H

/* Avoid include hell */
#define NMI_VECTOR 0x02

void send_IPI_mask_bitmask(cpumask_t mask, int vector);
void __send_IPI_shortcut(unsigned int shortcut, int vector);

extern int no_broadcast;

#ifdef CONFIG_X86_64
#include <asm/genapic.h>
#define send_IPI_mask (genapic->send_IPI_mask)
#else
static inline void send_IPI_mask(cpumask_t mask, int vector)
{
        send_IPI_mask_bitmask(mask, vector);
}
#endif

static inline void __local_send_IPI_allbutself(int vector)
{
        if (no_broadcast || vector == NMI_VECTOR) {
                cpumask_t mask = cpu_online_map;

                cpu_clear(smp_processor_id(), mask);
                send_IPI_mask(mask, vector);
        } else
                __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
}

static inline void __local_send_IPI_all(int vector)
{
        if (no_broadcast || vector == NMI_VECTOR)
                send_IPI_mask(cpu_online_map, vector);
        else
                __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
}

#ifdef CONFIG_X86_64
#define send_IPI_allbutself (genapic->send_IPI_allbutself)
#define send_IPI_all (genapic->send_IPI_all)
#else
static inline void send_IPI_allbutself(int vector)
{
        /*
         * if there are no other CPUs in the system then we get an APIC send 
         * error if we try to broadcast, thus avoid sending IPIs in this case.
         */
        if (!(num_online_cpus() > 1))
                return;

        __local_send_IPI_allbutself(vector);
        return;
}

static inline void send_IPI_all(int vector)
{
        __local_send_IPI_all(vector);
}
#endif

#endif /* ASM_X86__MACH_DEFAULT__MACH_IPI_H */