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
 5 */
 6
 7#include <linux/kernel.h>
 8#include <linux/irq_work.h>
 9#include <linux/hardirq.h>
10#include <asm/apic.h>
 
11#include <asm/trace/irq_vectors.h>
 
12
13static inline void __smp_irq_work_interrupt(void)
 
14{
 
 
15	inc_irq_stat(apic_irq_work_irqs);
16	irq_work_run();
17}
18
19__visible void smp_irq_work_interrupt(struct pt_regs *regs)
20{
21	ipi_entering_ack_irq();
22	__smp_irq_work_interrupt();
23	exiting_irq();
24}
25
26__visible void smp_trace_irq_work_interrupt(struct pt_regs *regs)
27{
28	ipi_entering_ack_irq();
29	trace_irq_work_entry(IRQ_WORK_VECTOR);
30	__smp_irq_work_interrupt();
31	trace_irq_work_exit(IRQ_WORK_VECTOR);
32	exiting_irq();
33}
34
35void arch_irq_work_raise(void)
36{
37#ifdef CONFIG_X86_LOCAL_APIC
38	if (!arch_irq_work_has_interrupt())
39		return;
40
41	apic->send_IPI_self(IRQ_WORK_VECTOR);
42	apic_wait_icr_idle();
 
43#endif
44}