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net: Print the module name as part of the watchdog message 

As suggested by Dave:

This patch adds a function to get the driver name from a struct net_device,
and consequently uses this in the watchdog timeout handler to print as 
part of the message. 

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arjan van de Ven 2008-07-21 13:31:48 -07:00 committed by David S. Miller
parent 7943986ca1
commit 6579e57b31
3 changed files with 25 additions and 3 deletions
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2
include/linux/netdevice.h
View File

@ -1645,6 +1645,8 @@ extern void dev_seq_stop(struct seq_file *seq, void *v);
extern int netdev_class_create_file(struct class_attribute *class_attr);
extern void netdev_class_remove_file(struct class_attribute *class_attr);
extern char *netdev_drivername(struct net_device *dev, char *buffer, int len);
extern void linkwatch_run_queue(void);
extern int netdev_compute_features(unsigned long all, unsigned long one);

20
net/core/dev.c
View File

@ -4686,6 +4686,26 @@ err_name:
return -ENOMEM;
}
char *netdev_drivername(struct net_device *dev, char *buffer, int len)
{
struct device_driver *driver;
struct device *parent;
if (len <= 0 || !buffer)
return buffer;
buffer[0] = 0;
parent = dev->dev.parent;
if (!parent)
return buffer;
driver = parent->driver;
if (driver && driver->name)
strlcpy(buffer, driver->name, len);
return buffer;
}
static void __net_exit netdev_exit(struct net *net)
{
kfree(net->dev_name_head);

6
net/sched/sch_generic.c
View File

@ -212,9 +212,9 @@ static void dev_watchdog(unsigned long arg)
if (some_queue_stopped &&
time_after(jiffies, (dev->trans_start +
dev->watchdog_timeo))) {
printk(KERN_INFO "NETDEV WATCHDOG: %s: "
"transmit timed out\n",
dev->name);
char drivername[64];
printk(KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit timed out\n",
dev->name, netdev_drivername(dev, drivername, 64));
dev->tx_timeout(dev);
WARN_ON_ONCE(1);
}