linux-kernel - Re: [PATCH 4/4] PCI: quirk print dev name with duration

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Message-ID: <1329414876.11146.2.camel@joe2Laptop>
Date:	Thu, 16 Feb 2012 09:54:36 -0800
From:	Joe Perches <joe@...ches.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH 4/4] PCI: quirk print dev name with duration

On Thu, 2012-02-16 at 09:49 -0800, Bjorn Helgaas wrote:
> If you do change, remember that dev_dbg() is different from
> printk(KERN_DEBUG) in that printk(KERN_DEBUG) is always compiled-in
> and always goes to the dmesg, but dev_dbg() is only compiled in when
> DEBUG is defined, so dev_printk(KERN_DEBUG) would be a more direct
> replacement for printk(KERN_DEBUG).

Correct.

Which is why I usually add #define DEBUG or an
equivalent CONFIG option before those are converted.
Doing so allows control via dynamic debug.


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