C++ (Cpp) local_apic_timer_interruptの例

コード例 #1

void __irq_entry smp_apic_timer_interrupt(struct pt_regs *regs)
{
    struct pt_regs *old_regs = set_irq_regs(regs);


    ack_APIC_irq();

    exit_idle();
    irq_enter();
    local_apic_timer_interrupt();
    irq_exit();

    set_irq_regs(old_regs);
}

コード例 #2

ファイル: apic_64.c プロジェクト: mobilipia/iods

/*
 * Local APIC timer interrupt. This is the most natural way for doing
 * local interrupts, but local timer interrupts can be emulated by
 * broadcast interrupts too. [in case the hw doesn't support APIC timers]
 *
 * [ if a single-CPU system runs an SMP kernel then we call the local
 *   interrupt as well. Thus we cannot inline the local irq ... ]
 */
void smp_apic_timer_interrupt(struct pt_regs *regs)
{
	struct pt_regs *old_regs = set_irq_regs(regs);

	/*
	 * NOTE! We'd better ACK the irq immediately,
	 * because timer handling can be slow.
	 */
	ack_APIC_irq();
	/*
	 * update_process_times() expects us to have done irq_enter().
	 * Besides, if we don't timer interrupts ignore the global
	 * interrupt lock, which is the WrongThing (tm) to do.
	 */
	exit_idle();
	irq_enter();
	local_apic_timer_interrupt();
	irq_exit();
	set_irq_regs(old_regs);
}