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/*
* linux/arch/alpha/kernel/irq_impl.h
*
* Copyright (C) 1995 Linus Torvalds
* Copyright (C) 1998, 2000 Richard Henderson
*
* This file contains declarations and inline functions for interfacing
* with the IRQ handling routines in irq.c.
*/
#include <linux/interrupt.h>
#include <linux/irq.h>
#define RTC_IRQ 8
extern void isa_device_interrupt(unsigned long, struct pt_regs *);
extern void isa_no_iack_sc_device_interrupt(unsigned long, struct pt_regs *);
extern void srm_device_interrupt(unsigned long, struct pt_regs *);
extern void pyxis_device_interrupt(unsigned long, struct pt_regs *);
extern struct irqaction timer_irqaction;
extern struct irqaction isa_cascade_irqaction;
extern struct irqaction timer_cascade_irqaction;
extern struct irqaction halt_switch_irqaction;
extern void init_srm_irqs(long, unsigned long);
extern void init_pyxis_irqs(unsigned long);
extern void init_rtc_irq(void);
extern void common_init_isa_dma(void);
extern void i8259a_enable_irq(unsigned int);
extern void i8259a_disable_irq(unsigned int);
extern void i8259a_mask_and_ack_irq(unsigned int);
extern unsigned int i8259a_startup_irq(unsigned int);
extern void i8259a_end_irq(unsigned int);
extern struct hw_interrupt_type i8259a_irq_type;
extern void init_i8259a_irqs(void);
extern void handle_irq(int irq, struct pt_regs * regs);
extern unsigned long prof_cpu_mask;
static inline void
alpha_do_profile(unsigned long pc)
{
extern char _stext;
if (!prof_buffer)
return;
/*
* Only measure the CPUs specified by /proc/irq/prof_cpu_mask.
* (default is all CPUs.)
*/
if (!((1<<smp_processor_id()) & prof_cpu_mask))
return;
pc -= (unsigned long) &_stext;
pc >>= prof_shift;
/*
* Don't ignore out-of-bounds PC values silently,
* put them into the last histogram slot, so if
* present, they will show up as a sharp peak.
*/
if (pc > prof_len - 1)
pc = prof_len - 1;
atomic_inc((atomic_t *)&prof_buffer[pc]);
}
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