irq_work.c

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/*
 * x86 specific code for irq_work
 *
 * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/irq_work.h>
#include <linux/hardirq.h>
#include <asm/apic.h>

void smp_irq_work_interrupt(struct pt_regs *regs)
{
    irq_enter();
    ack_APIC_irq();
    inc_irq_stat(apic_irq_work_irqs);
    irq_work_run();
    irq_exit();
}

void arch_irq_work_raise(void)
{
#ifdef CONFIG_X86_LOCAL_APIC
    if (!cpu_has_apic)
        return;

    apic->send_IPI_self(IRQ_WORK_VECTOR);
    apic_wait_icr_idle();
#endif
}