arch/x86/kernel/irq_work.c

   1 /*
   2  * x86 specific code for irq_work
   3  *
   4  * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/irq_work.h>
   9 #include <linux/hardirq.h>
  10 #include <asm/apic.h>
  11
  12 void smp_irq_work_interrupt(struct pt_regs *regs)
  13 {
  14         irq_enter();
  15         ack_APIC_irq();
  16         inc_irq_stat(apic_irq_work_irqs);
  17         irq_work_run();
  18         irq_exit();
  19 }
  20
  21 void arch_irq_work_raise(void)
  22 {
  23 #ifdef CONFIG_X86_LOCAL_APIC
  24         if (!cpu_has_apic)
  25                 return;
  26
  27         apic->send_IPI_self(IRQ_WORK_VECTOR);
  28         apic_wait_icr_idle();
  29 #endif
  30 }