Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ivan Kokshaysky |
151 |
37.56% |
4 |
10.81% |
| Linus Torvalds (pre-git) |
114 |
28.36% |
14 |
37.84% |
| Michael Cree |
39 |
9.70% |
1 |
2.70% |
| Thomas Gleixner |
32 |
7.96% |
2 |
5.41% |
| Kyle McMartin |
24 |
5.97% |
1 |
2.70% |
| Maksim Krasnyanskiy |
8 |
1.99% |
1 |
2.70% |
| Arnaldo Carvalho de Melo |
6 |
1.49% |
1 |
2.70% |
| Linus Torvalds |
5 |
1.24% |
3 |
8.11% |
| Mike Travis |
5 |
1.24% |
1 |
2.70% |
| Al Viro |
3 |
0.75% |
1 |
2.70% |
| Eric Sesterhenn / Snakebyte |
3 |
0.75% |
1 |
2.70% |
| Jiang Liu |
3 |
0.75% |
1 |
2.70% |
| Rusty Russell |
2 |
0.50% |
2 |
5.41% |
| Morten Holst Larsen |
2 |
0.50% |
1 |
2.70% |
| Takashi Iwai |
2 |
0.50% |
1 |
2.70% |
| Adrian Bunk |
2 |
0.50% |
1 |
2.70% |
| Greg Kroah-Hartman |
1 |
0.25% |
1 |
2.70% |
| Total |
402 |
|
37 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/alpha/kernel/irq.c
*
* Copyright (C) 1995 Linus Torvalds
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel_stat.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/interrupt.h>
#include <linux/random.h>
#include <linux/irq.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/profile.h>
#include <linux/bitops.h>
#include <asm/io.h>
#include <linux/uaccess.h>
volatile unsigned long irq_err_count;
DEFINE_PER_CPU(unsigned long, irq_pmi_count);
void ack_bad_irq(unsigned int irq)
{
irq_err_count++;
printk(KERN_CRIT "Unexpected IRQ trap at vector %u\n", irq);
}
#ifdef CONFIG_SMP
static char irq_user_affinity[NR_IRQS];
int irq_select_affinity(unsigned int irq)
{
struct irq_data *data = irq_get_irq_data(irq);
struct irq_chip *chip;
static int last_cpu;
int cpu = last_cpu + 1;
if (!data)
return 1;
chip = irq_data_get_irq_chip(data);
if (!chip->irq_set_affinity || irq_user_affinity[irq])
return 1;
while (!cpu_possible(cpu) ||
!cpumask_test_cpu(cpu, irq_default_affinity))
cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
last_cpu = cpu;
cpumask_copy(irq_data_get_affinity_mask(data), cpumask_of(cpu));
chip->irq_set_affinity(data, cpumask_of(cpu), false);
return 0;
}
#endif /* CONFIG_SMP */
int arch_show_interrupts(struct seq_file *p, int prec)
{
int j;
#ifdef CONFIG_SMP
seq_puts(p, "IPI: ");
for_each_online_cpu(j)
seq_printf(p, "%10lu ", cpu_data[j].ipi_count);
seq_putc(p, '\n');
#endif
seq_puts(p, "PMI: ");
for_each_online_cpu(j)
seq_printf(p, "%10lu ", per_cpu(irq_pmi_count, j));
seq_puts(p, " Performance Monitoring\n");
seq_printf(p, "ERR: %10lu\n", irq_err_count);
return 0;
}
/*
* handle_irq handles all normal device IRQ's (the special
* SMP cross-CPU interrupts have their own specific
* handlers).
*/
#define MAX_ILLEGAL_IRQS 16
void
handle_irq(int irq)
{
/*
* We ack quickly, we don't want the irq controller
* thinking we're snobs just because some other CPU has
* disabled global interrupts (we have already done the
* INT_ACK cycles, it's too late to try to pretend to the
* controller that we aren't taking the interrupt).
*
* 0 return value means that this irq is already being
* handled by some other CPU. (or is disabled)
*/
static unsigned int illegal_count=0;
struct irq_desc *desc = irq_to_desc(irq);
if (!desc || ((unsigned) irq > ACTUAL_NR_IRQS &&
illegal_count < MAX_ILLEGAL_IRQS)) {
irq_err_count++;
illegal_count++;
printk(KERN_CRIT "device_interrupt: invalid interrupt %d\n",
irq);
return;
}
irq_enter();
generic_handle_irq_desc(desc);
irq_exit();
}