| #ifndef __ASM_HARDIRQ_H |
| #define __ASM_HARDIRQ_H |
| |
| #include <linux/config.h> |
| #include <linux/threads.h> |
| #include <linux/irq.h> |
| #include <asm/pda.h> |
| #include <asm/apic.h> |
| |
| #define __ARCH_IRQ_STAT 1 |
| |
| #define local_softirq_pending() read_pda(__softirq_pending) |
| |
| #define __ARCH_SET_SOFTIRQ_PENDING 1 |
| |
| #define set_softirq_pending(x) write_pda(__softirq_pending, (x)) |
| #define or_softirq_pending(x) or_pda(__softirq_pending, (x)) |
| |
| /* |
| * 'what should we do if we get a hw irq event on an illegal vector'. |
| * each architecture has to answer this themselves. |
| */ |
| static inline void ack_bad_irq(unsigned int irq) |
| { |
| printk("unexpected IRQ trap at vector %02x\n", irq); |
| #ifdef CONFIG_X86_LOCAL_APIC |
| /* |
| * Currently unexpected vectors happen only on SMP and APIC. |
| * We _must_ ack these because every local APIC has only N |
| * irq slots per priority level, and a 'hanging, unacked' IRQ |
| * holds up an irq slot - in excessive cases (when multiple |
| * unexpected vectors occur) that might lock up the APIC |
| * completely. |
| */ |
| ack_APIC_irq(); |
| #endif |
| } |
| #endif /* __ASM_HARDIRQ_H */ |
