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Date:	Mon, 18 Jun 2007 08:23:31 -0700
From:	Andrew Morton <>
To:	Chuck Ebbert <>
	Paul Mackerras <>,
Subject: Re: [Bugme-new] [Bug 8638] New: unregister_netdevice: waiting for
 ppp0 to become free. pppoe + multihome + htb qos?

On Mon, 18 Jun 2007 10:56:06 -0400 Chuck Ebbert <> wrote:

> Is there any way to print the addresses the notifier is calling
> to try and release net device references? I see:
> net/core/dev/c::netdev_wait_allrefs():
>         while (atomic_read(&dev->refcnt) != 0) {
>                 if (time_after(jiffies, rebroadcast_time + 1 * HZ)) {
>                         rtnl_lock();
>                         /* Rebroadcast unregister notification */
>                         raw_notifier_call_chain(&netdev_chain,
>                                             NETDEV_UNREGISTER, dev);
> but don't see any way to print the functions that get called.

Nope.  I guess we could add some print_notifier_call_chain() thing, but
then we'd need one flavour per locking scheme and it would get ridiculous.

I guess just an unlocked version would be OK - it's just a debug thing.
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