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From: Andi Kleen <ak@novell.com>
Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg)
To: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier
Date: Thu, 12 Apr 2007 19:46:22 +0200
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Cc: Andrew Morton <akpm@linux-foundation.org>,
       Daniel Walker <dwalker@mvista.com>, linux-kernel@vger.kernel.org,
       johnstul@us.ibm.com, tglx@linutronix.de
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On Thursday 12 April 2007 19:43:03 Jeremy Fitzhardinge wrote:
> Andrew Morton wrote:
> > hm.  People (ab)use sched_clock() for all sorts of things nowadays.  I wouldn't
> > do anything to degrade it just on behalf of printk-timestamping.
> >   
> 
> printk was the only non-scheduler-ish use I could find.  Are there others?

iirc some of the out of tree tracing toolkits used it at least.

-Andi