blob: 9507421de3351b89cbc09aa229ee8fc2e15b24be [file] [log] [blame]
* Copyright (C) 2015 Imagination Technologies
* Author: Paul Burton <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
#include <asm/bcache.h>
#include <asm/debug.h>
#include <linux/uaccess.h>
#include <linux/debugfs.h>
#include <linux/init.h>
static ssize_t sc_prefetch_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
bool enabled = bc_prefetch_is_enabled();
char buf[3];
buf[0] = enabled ? 'Y' : 'N';
buf[1] = '\n';
buf[2] = 0;
return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
static ssize_t sc_prefetch_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
bool enabled;
int err;
err = kstrtobool_from_user(user_buf, count, &enabled);
if (err)
return err;
if (enabled)
return count;
static const struct file_operations sc_prefetch_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = sc_prefetch_read,
.write = sc_prefetch_write,
static int __init sc_debugfs_init(void)
struct dentry *dir;
dir = debugfs_create_dir("l2cache", mips_debugfs_dir);
debugfs_create_file("prefetch", S_IRUGO | S_IWUSR, dir, NULL,
return 0;