Peter Zijlstra | e360adb | 2010-10-14 14:01:34 +0800 | [diff] [blame] | 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 | } |