linux-kernel - Re: [RFC net-next 0/2] net: Use net_<level>

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Message-ID: <1337105028.15553.3.camel@jlt3.sipsolutions.net>
Date:	Tue, 15 May 2012 20:03:48 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Joe Perches <joe@...ches.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-decnet-user@...ts.sourceforge.net,
	netfilter-devel@...r.kernel.org, netfilter@...r.kernel.org,
	coreteam@...filter.org, linux-wireless@...r.kernel.org,
	dev@...nvswitch.org, linux-sctp@...r.kernel.org,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC net-next 0/2] net: Use net_<level>_ratelimit

On Tue, 2012-05-15 at 10:59 -0700, Joe Perches wrote:
> On Tue, 2012-05-15 at 13:45 -0400, David Miller wrote:
> > From: Joe Perches <joe@...ches.com>
> > Date: Mon, 14 May 2012 00:56:24 -0700
> > 
> > > net_ratelimit() like __ratelimit() is too easy to misuse.
> > > 
> > > Add simplifying macros similar to pr_<level>_ratelimited
> > > that combines the test of net_ratelimit and logging.
> > > 
> > > Joe Perches (2):
> > >   net: Add net_ratelimited_function and net_<level>_ratelimited macros
> > >   net: Convert net_ratelimit uses to net_<level>_ratelimited
> > 
> > These look fine to me so I've applied them to net-next and am
> > sanity checking the build right now.
> 
> OK, but fyi, there's a possible issue with !CONFIG_DEBUG
> builds because these patches converted some uses of
> 	if (net_ratelimit())
> 		printk(KERN_DEBUG ...
> to
> 	net_dbg_ratelimited()
> 
> These messages are no longer emitted when DEBUG isn't defined
> and not using dynamic_debug.  I'm not sure that's a real
> problem, but it's a difference.
> 
> I could produce a net_printk_ratelimited that would keep
> the original behavior if necessary.
> 
> 	net_printk_ratelimited(KERN_DEBUG etc...)

Oops. Yes, please do that, mac80211 doesn't have DEBUG yet

johannes

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