linux-kernel - Re: [RFC][PATCH] tracing: Print nasty banner when trace

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Message-ID: <E1WqFyD-0005jp-76@bigred.inka.de>
Date:	Fri, 30 May 2014 08:07:13 +0200
From:	Olaf Titz <olaf@...red.inka.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] tracing: Print nasty banner when trace_printk() is in use

>   *********************************************************
>   ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE    **

Is it really that bad to warrant this kind of warning? Not knowing
about the issue at all, I read from the original description that the
wastage is four pages of memory times number of CPU cores, which
shouldn't matter much except for small embedded systems.

Or does this something much scarier, like considerably slowing down
fast paths?

Olaf
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