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

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Message-ID: <Y853z/ENGez4zlMz@kadam>
Date:   Mon, 23 Jan 2023 15:04:31 +0300
From:   Dan Carpenter <error27@...il.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Phil Elwell <phil@...pberrypi.com>,
        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>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/4] Drop custom logging

On Fri, Jan 20, 2023 at 02:53:15AM +0200, Laurent Pinchart wrote:
> Log categories are used to group messages in categories and control
> their log level per category. As far as I know, dynamic debug doesn't
> provide any such feature.

One idea is you could put the category in the format string.  Then you
could just grep /proc/dynamic_debug/control for it and enable the printks
like that.

regards,
dan carpenter