[alsa-devel] [PATCH] ALSA: get rid of CONFIG_SND_VERBOSE_PRINTK
tiwai at suse.de
Wed Jun 5 08:32:52 CEST 2013
At Tue, 04 Jun 2013 23:15:21 -0700,
Joe Perches wrote:
> On Wed, 2013-06-05 at 08:04 +0200, Takashi Iwai wrote:
> > At Tue, 4 Jun 2013 16:54:12 -0400 (EDT), Alan Stern wrote:
> > > On Tue, 4 Jun 2013, Joe Perches wrote:
> > > You didn't respond to the first point I raised. Since these messages
> > > are all meant for debugging, there's no point allowing them to have
> > > prefixes like KERN_ERR or KERN_INFO. They should always be printed at
> > > the KERN_DEBUG level. Or did you think this was so obviously true that
> > > it didn't require any comment?
> > Unfortunately, it's not so straightforward. Many messages are better
> > with KERN_INFO indeed. In such places, snd_printd() is used rather as
> > snd_chattier_printk_with_prefix().
> In those cases, it's likely true that most of those
> should not be snd_printd but promoted to pr_<level>
Yes. These are snd_printd() just to be conditionally built in.
But in most cases it's rather useful to print them (as most distros
set CONFIG_SND_DEBUG=y). Hence practically they can be pr_info()
> > Instead, we tended to put such informational messages as snd_printd(),
> > while keeping the driver itself reticent as much as possible for
> > "productive" systems. This style was kept for a while even after
> > merged to 2.5 kernels until recently.
> > Also, some places use KERN_WARNING or KERN_ERR with snd_printd(),
> > mostly because they are in the context with CONFIG_SND_DEBUG.
> > They can be well pr_warning() or pr_err().
> I thought the idea was to rationalize all that with
> the new printing styles. So on the whole, it seems
> we are agreeing strongly.
Yep, we can convert almost all snd_printk() with pr_*(), and usual
snd_printd() with pr_debug(). There must be some exceptions, and they
need care manually.
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