linux-kernel - Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier

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Message-Id: <1176400366.20237.54.camel@imap.mvista.com>
Date:	Thu, 12 Apr 2007 10:52:46 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...ell.com>, linux-kernel@...r.kernel.org,
	johnstul@...ibm.com, tglx@...utronix.de
Subject: Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier

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

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