netdev - Re: [PATCH] wireless: change cfg80211 regulatory domain info as debug messages

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Message-ID: <20151116015941.GB3439@dhcp-128-65.nay.redhat.com>
Date:	Mon, 16 Nov 2015 09:59:41 +0800
From:	Dave Young <dyoung@...hat.com>
To:	Joe Perches <joe@...ches.com>
Cc:	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, davem@...emloft.net,
	johannes@...solutions.net
Subject: Re: [PATCH] wireless: change cfg80211 regulatory domain info as
 debug messages

On 11/15/15 at 09:38am, Joe Perches wrote:
> On Sun, 2015-11-15 at 15:31 +0800, Dave Young wrote:
> > cfg80211 module prints a lot of messages like below. Actually printing
> > once is acceptable but sometimes it will print again and again, it looks
> > very annoying. It is better to change these detail messages to debugging
> > only.
> 
> So maybe add some wrapper that does a pr_info then
> a pr_debug for the second and subsequent uses like:
> 
> #define pr_info_once_then_debug(fmt, ...)			\
> ({								\
> 	static bool __print_once __read_mostly;			\
> 								\
> 	if (!__print_once) {					\
> 		__print_once = true;				\
> 		pr_info(fmt, ##__VA_ARGS__);			\
> 	} else {						\
> 		pr_debug(fmt, ##__VA_ARGS__);			\
> 	}							\
> })
> 

Hmm, it looks too much for this issue, I'm thinking about to add a cmdline
param to disable mute it.

Thanks
Dave
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