mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 14:26:46 +07:00
914ab06279
The /proc/interrupts file should also display the irq_chip associated with each irq ... e.g. INTC, EIM, GPIO. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2004-2006 Atmel Corporation
|
|
*
|
|
* Based on arch/i386/kernel/irq.c
|
|
* Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This file contains the code used by various IRQ handling routines:
|
|
* asking for different IRQ's should be done through these routines
|
|
* instead of just grabbing them. Thus setups with different IRQ numbers
|
|
* shouldn't result in any weird surprises, and installing new handlers
|
|
* should be easier.
|
|
*
|
|
* IRQ's are in fact implemented a bit like signal handlers for the kernel.
|
|
* Naturally it's not a 1:1 relation, but there are similarities.
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/sysdev.h>
|
|
|
|
/*
|
|
* 'what should we do if we get a hw irq event on an illegal vector'.
|
|
* each architecture has to answer this themselves.
|
|
*/
|
|
void ack_bad_irq(unsigned int irq)
|
|
{
|
|
printk("unexpected IRQ %u\n", irq);
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
int show_interrupts(struct seq_file *p, void *v)
|
|
{
|
|
int i = *(loff_t *)v, cpu;
|
|
struct irqaction *action;
|
|
unsigned long flags;
|
|
|
|
if (i == 0) {
|
|
seq_puts(p, " ");
|
|
for_each_online_cpu(cpu)
|
|
seq_printf(p, "CPU%d ", cpu);
|
|
seq_putc(p, '\n');
|
|
}
|
|
|
|
if (i < NR_IRQS) {
|
|
spin_lock_irqsave(&irq_desc[i].lock, flags);
|
|
action = irq_desc[i].action;
|
|
if (!action)
|
|
goto unlock;
|
|
|
|
seq_printf(p, "%3d: ", i);
|
|
for_each_online_cpu(cpu)
|
|
seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
|
|
seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-");
|
|
seq_printf(p, " %s", action->name);
|
|
for (action = action->next; action; action = action->next)
|
|
seq_printf(p, ", %s", action->name);
|
|
|
|
seq_putc(p, '\n');
|
|
unlock:
|
|
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|