xref: /openbmc/linux/arch/x86/kernel/irq_work.c (revision 6aa7de05)
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 #include <linux/interrupt.h>
13 
14 #ifdef CONFIG_X86_LOCAL_APIC
15 __visible void __irq_entry smp_irq_work_interrupt(struct pt_regs *regs)
16 {
17 	ipi_entering_ack_irq();
18 	trace_irq_work_entry(IRQ_WORK_VECTOR);
19 	inc_irq_stat(apic_irq_work_irqs);
20 	irq_work_run();
21 	trace_irq_work_exit(IRQ_WORK_VECTOR);
22 	exiting_irq();
23 }
24 
25 void arch_irq_work_raise(void)
26 {
27 	if (!arch_irq_work_has_interrupt())
28 		return;
29 
30 	apic->send_IPI_self(IRQ_WORK_VECTOR);
31 	apic_wait_icr_idle();
32 }
33 #endif
34