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/trace/irq_vectors.h> 13 #include <linux/interrupt.h> 14 15 #ifdef CONFIG_X86_LOCAL_APIC 16 __visible void __irq_entry smp_irq_work_interrupt(struct pt_regs *regs) 17 { 18 ipi_entering_ack_irq(); 19 trace_irq_work_entry(IRQ_WORK_VECTOR); 20 inc_irq_stat(apic_irq_work_irqs); 21 irq_work_run(); 22 trace_irq_work_exit(IRQ_WORK_VECTOR); 23 exiting_irq(); 24 } 25 26 void 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