LXR linux/arch/x86/kernel/irq

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * x86 specific code for irq_work
   4 *
   5 * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra
   6 */
   7
   8#include <linux/kernel.h>
   9#include <linux/irq_work.h>
  10#include <linux/hardirq.h>
  11#include <asm/apic.h>
  12#include <asm/idtentry.h>
  13#include <asm/trace/irq_vectors.h>
  14#include <linux/interrupt.h>
  15
  16#ifdef CONFIG_X86_LOCAL_APIC
  17DEFINE_IDTENTRY_SYSVEC(sysvec_irq_work)
  18{
  19        ack_APIC_irq();
  20        trace_irq_work_entry(IRQ_WORK_VECTOR);
  21        inc_irq_stat(apic_irq_work_irqs);
  22        irq_work_run();
  23        trace_irq_work_exit(IRQ_WORK_VECTOR);
  24}
  25
  26void arch_irq_work_raise(void)
  27{
  28        if (!arch_irq_work_has_interrupt())
  29                return;
  30
  31        apic->send_IPI_self(IRQ_WORK_VECTOR);
  32        apic_wait_icr_idle();
  33}
  34#endif
  35