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	apic_eoi();
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

 
 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
12void 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
21void 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}