linux-kernel - Re: [PATCHv2 1/2] dev-core: fix build break when DEBUG is enabled

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Date:	Tue, 27 Aug 2013 11:16:02 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jason Baron <jbaron@...mai.com>
Cc:	Dmitry Kasatkin <d.kasatkin@...sung.com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	"sarah.a.sharp@...ux.intel.com" <sarah.a.sharp@...ux.intel.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"dmitry.kasatkin@...il.com" <dmitry.kasatkin@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv2 1/2] dev-core: fix build break when DEBUG is enabled

On Tue, 2013-08-27 at 13:32 -0400, Jason Baron wrote:
> On 08/27/2013 12:20 PM, Joe Perches wrote:
> > On Tue, 2013-08-27 at 17:47 +0300, Dmitry Kasatkin wrote:
> >> When DEBUG is defined, dev_dbg_ratelimited uses dynamic debug data
> >> structures even when CONFIG_DYNAMIC_DEBUG is not defined.
> >> It leads to build break.
> >> For example, when I try to use dev_dbg_ratelimited in USB code and
> >> CONFIG_USB_DEBUG is enabled, but CONFIG_DYNAMIC_DEBUG is not, I get:
> > Jason?
> >
> > Seems mostly sensible to me but I think the first check
> > needs to be
> >
> > #if defined(CONFIG_DYNAMIC_DEBUG) && defined(DEBUG)
> 
> Why? All the other call-sites, do it the way Dmitry has done it.

Fine.  Originally I thought it useful to not
store the ratelimit state, but this way those
messages can be enabled via the dynamic_debug
control.

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