*
* (c) Copyright 2000 Red Hat Software
* (c) Copyright 2000 Helge Deller <hdeller@redhat.com>
- * (c) Copyright 2001-2005 Helge Deller <deller@gmx.de>
+ * (c) Copyright 2001-2009 Helge Deller <deller@gmx.de>
* (c) Copyright 2001 Randolph Chung <tausq@debian.org>
*
* This program is free software; you can redistribute it and/or modify
#include <linux/kernel_stat.h>
#include <linux/reboot.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/ctype.h>
#include <linux/blkdev.h>
#include <linux/workqueue.h>
static void (*led_func_ptr) (unsigned char) __read_mostly;
#ifdef CONFIG_PROC_FS
-static int led_proc_read(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+static int led_proc_show(struct seq_file *m, void *v)
{
- char *out = page;
- int len;
-
- switch ((long)data)
+ switch ((long)m->private)
{
case LED_NOLCD:
- out += sprintf(out, "Heartbeat: %d\n", led_heartbeat);
- out += sprintf(out, "Disk IO: %d\n", led_diskio);
- out += sprintf(out, "LAN Rx/Tx: %d\n", led_lanrxtx);
+ seq_printf(m, "Heartbeat: %d\n", led_heartbeat);
+ seq_printf(m, "Disk IO: %d\n", led_diskio);
+ seq_printf(m, "LAN Rx/Tx: %d\n", led_lanrxtx);
break;
case LED_HASLCD:
- out += sprintf(out, "%s\n", lcd_text);
+ seq_printf(m, "%s\n", lcd_text);
break;
default:
- *eof = 1;
return 0;
}
+ return 0;
+}
- len = out - page - off;
- if (len < count) {
- *eof = 1;
- if (len <= 0) return 0;
- } else {
- len = count;
- }
- *start = page + off;
- return len;
+static int led_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, led_proc_show, PDE(inode)->data);
}
-static int led_proc_write(struct file *file, const char *buf,
- unsigned long count, void *data)
+
+static ssize_t led_proc_write(struct file *file, const char *buf,
+ size_t count, loff_t *pos)
{
+ void *data = PDE(file->f_path.dentry->d_inode)->data;
char *cur, lbuf[count + 1];
int d;
cur = lbuf;
- /* skip initial spaces */
- while (*cur && isspace(*cur))
- {
- cur++;
- }
-
switch ((long)data)
{
case LED_NOLCD:
return -EINVAL;
}
+static const struct file_operations led_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = led_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = led_proc_write,
+};
+
static int __init led_create_procfs(void)
{
struct proc_dir_entry *proc_pdc_root = NULL;
proc_pdc_root = proc_mkdir("pdc", 0);
if (!proc_pdc_root) return -1;
- proc_pdc_root->owner = THIS_MODULE;
- ent = create_proc_entry("led", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+ ent = proc_create_data("led", S_IRUGO|S_IWUSR, proc_pdc_root,
+ &led_proc_fops, (void *)LED_NOLCD); /* LED */
if (!ent) return -1;
- ent->data = (void *)LED_NOLCD; /* LED */
- ent->read_proc = led_proc_read;
- ent->write_proc = led_proc_write;
- ent->owner = THIS_MODULE;
if (led_type == LED_HASLCD)
{
- ent = create_proc_entry("lcd", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root);
+ ent = proc_create_data("lcd", S_IRUGO|S_IWUSR, proc_pdc_root,
+ &led_proc_fops, (void *)LED_HASLCD); /* LCD */
if (!ent) return -1;
- ent->data = (void *)LED_HASLCD; /* LCD */
- ent->read_proc = led_proc_read;
- ent->write_proc = led_proc_write;
- ent->owner = THIS_MODULE;
}
return 0;
rx_total = tx_total = 0;
- /* we are running as a workqueue task, so locking dev_base
- * for reading should be OK */
- read_lock(&dev_base_lock);
+ /* we are running as a workqueue task, so we can use an RCU lookup */
rcu_read_lock();
- for_each_netdev(dev) {
- struct net_device_stats *stats;
+ for_each_netdev_rcu(&init_net, dev) {
+ const struct net_device_stats *stats;
struct in_device *in_dev = __in_dev_get_rcu(dev);
if (!in_dev || !in_dev->ifa_list)
continue;
- if (LOOPBACK(in_dev->ifa_list->ifa_local))
+ if (ipv4_is_loopback(in_dev->ifa_list->ifa_local))
continue;
- stats = dev->get_stats(dev);
+ stats = dev_get_stats(dev);
rx_total += stats->rx_packets;
tx_total += stats->tx_packets;
}
rcu_read_unlock();
- read_unlock(&dev_base_lock);
retval = 0;
if (likely(led_lanrxtx)) currentleds |= led_get_net_activity();
if (likely(led_diskio)) currentleds |= led_get_diskio_activity();
- /* blink all LEDs twice a second if we got an Oops (HPMC) */
- if (unlikely(oops_in_progress))
- currentleds = (count_HZ<=(HZ/2)) ? 0 : 0xff;
+ /* blink LEDs if we got an Oops (HPMC) */
+ if (unlikely(oops_in_progress)) {
+ if (boot_cpu_data.cpu_type >= pcxl2) {
+ /* newer machines don't have loadavg. LEDs, so we
+ * let all LEDs blink twice per second instead */
+ currentleds = (count_HZ <= (HZ/2)) ? 0 : 0xff;
+ } else {
+ /* old machines: blink loadavg. LEDs twice per second */
+ if (count_HZ <= (HZ/2))
+ currentleds &= ~(LED4|LED5|LED6|LED7);
+ else
+ currentleds |= (LED4|LED5|LED6|LED7);
+ }
+ }
if (currentleds != lastleds)
{
/* Cancel the work item and delete the queue */
if (led_wq) {
- cancel_rearming_delayed_workqueue(led_wq, &led_task);
+ cancel_delayed_work_sync(&led_task);
destroy_workqueue(led_wq);
led_wq = NULL;
}
default:
printk(KERN_ERR "%s: Wrong LCD/LED model %d !\n",
- __FUNCTION__, lcd_info.model);
+ __func__, lcd_info.model);
return 1;
}
/* temporarily disable the led work task */
if (led_wq)
- cancel_rearming_delayed_workqueue(led_wq, &led_task);
+ cancel_delayed_work_sync(&led_task);
/* copy display string to buffer for procfs */
strlcpy(lcd_text, str, sizeof(lcd_text));