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Subject: Re: Regression found (Stop-marking-clocks-as-CLK_IS_CRITICAL)
To:     Mogens Jensen <mogens-jensen@protonmail.com>
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        Johannes Stezenbach <js@sig21.net>,
        Carlo Caione <carlo@endlessm.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
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From:   Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
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Date:   Fri, 25 Jan 2019 11:57:57 -0600
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>>> The only minor annoyance I'm experiencing now, is a large amount of debug output from something in kernel log when audio is played on the system:
>>> writing to lpe: 00000000: 01 01 01 01 00 00 08 00 ff ff ff ff 55 00 00 00 ............U...
>>> writing to lpe: 00000000: 01 01 01 01 00 00 1a 00 ff ff ff ff 75 00 12 00 ............u...
>>> ...
>> That's enabled via dynamic debug so that's rather a configuration issue
>> than a kernel problem?
> Do you have any suggestions on how to disable it?
>
> My kernel is compiled without DYNAMIC_DEBUG, DEBUG_FS and other debug features, so I don't understand why all this debug output is flooding the kernel log.
>
> It's a minor issue, but it would be nice to get rid of it.
I can confirm that this happens without DYNAMIC_DEBUG, and somehow 
changing the log level doesn't seem to matter. I tried changing the 
console log as a kernel parameter or with playing 
/proc/sys/kernel/printk, no luck. weird.