arch/m68k/kernel/irq.c

Source file repositories/reference/linux-study-clean/arch/m68k/kernel/irq.c

File Facts

System
Linux kernel
Corpus path
arch/m68k/kernel/irq.c
Extension
.c
Size
854 bytes
Lines
40
Domain
Architecture Layer
Bucket
arch/m68k
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <asm/traps.h>

asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
{
	struct pt_regs *oldregs = set_irq_regs(regs);

	irq_enter();
	generic_handle_irq(irq);
	irq_exit();

	set_irq_regs(oldregs);
}


/* The number of spurious interrupts */
atomic_t irq_err_count;

int arch_show_interrupts(struct seq_file *p, int prec)
{
	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
	return 0;
}

Annotation

Implementation Notes