linux-kernel - Re: [PATCH] xen-netfront: fix potential deadlock in xennet

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Message-ID: <20200724063052.GG841369@xps-13>
Date:   Fri, 24 Jul 2020 08:30:52 +0200
From:   Andrea Righi <andrea.righi@...onical.com>
To:     David Miller <davem@...emloft.net>
Cc:     boris.ostrovsky@...cle.com, jgross@...e.com,
        sstabellini@...nel.org, kuba@...nel.org,
        xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] xen-netfront: fix potential deadlock in xennet_remove()

On Thu, Jul 23, 2020 at 02:57:22PM -0700, David Miller wrote:
> From: Andrea Righi <andrea.righi@...onical.com>
> Date: Wed, 22 Jul 2020 08:52:11 +0200
> 
> > +static int xennet_remove(struct xenbus_device *dev)
> > +{
> > +	struct netfront_info *info = dev_get_drvdata(&dev->dev);
> > +
> > +	dev_dbg(&dev->dev, "%s\n", dev->nodename);
> 
> These kinds of debugging messages provide zero context and are so much
> less useful than simply using tracepoints which are more universally
> available than printk debugging facilities.
> 
> Please remove all of the dev_dbg() calls from this patch.

I didn't add that dev_dbg() call, it's just the old code moved around,
but I agree, I'll remove that call and send a new version of this patch.

Thanks for looking at it!
-Andrea