linux-kernel - Re: [RFC PATCH 0/4] Drop custom logging

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Date:   Thu, 19 Jan 2023 17:25:41 +0300
From:   Dan Carpenter <error27@...il.com>
To:     Phil Elwell <phil@...pberrypi.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Umang Jain <umang.jain@...asonboard.com>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Adrien Thierry <athierry@...hat.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/4] Drop custom logging

On Thu, Jan 19, 2023 at 01:47:44PM +0000, Phil Elwell wrote:
> > > I understand the desire to remove the custom logging. I don't welcome
> > > the loss of flexibility that comes with such a strategy
> >
> > What "loss of flexibility"?  You now have access to the full dynamic
> > debugging facilities that all of the rest of the kernel has.  What is
> > lacking?
> 
> Perhaps I've missed something, either in this patch set or the kernel
> as a whole, but how is one supposed to set different logging levels on
> different facilities within a driver/module, or even for the module as
> a whole?

Yeah.  You will be still able to do that and more besides after the
transition.  Cleaning this up makes the code better in every way.

Documentation/admin-guide/dynamic-debug-howto.rst

regards,
dan carpenter