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Subject: Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier
From: Daniel Walker <dwalker@mvista.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, Andi Kleen <ak@novell.com>,
       linux-kernel@vger.kernel.org, johnstul@us.ibm.com, tglx@linutronix.de
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Date: Thu, 12 Apr 2007 10:52:46 -0700
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On Thu, 2007-04-12 at 10:43 -0700, 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?
> 
>     J

There is some usage in block/blktrace.c (which I've not seen before..)

Daniel