38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
|
#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
|
||
|
|
|
||
|
|
/* Generate a lvalue for a pda member. Should fix softirq.c instead to use
|
||
|
|
special access macros. This would generate better code. */
|
||
|
|
#define __IRQ_STAT(cpu,member) (read_pda(me)->member)
|
||
|
|
|
||
|
|
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* '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 */
|