linux-kernel - Re: [PATCH 3/3] net: wireless: bcm43xx: big_buffer

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Message-ID: <20071219134805.GC21282@elte.hu>
Date:	Wed, 19 Dec 2007 14:48:07 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Michael Buesch <mb@...sch.de>
Cc:	bcm43xx-dev@...ts.berlios.de,
	Larry Finger <larry.finger@...inger.net>,
	mvtodevnull@...il.com, Daniel Walker <dwalker@...sta.com>,
	akpm@...ux-foundation.org, Ray Lee <ray-lk@...rabbit.org>,
	n <odie@...aau.dk>,
	SimonHolmThøgerse@...l.berlios.de,
	matthias.kaehlcke@...il.com, linux-kernel@...r.kernel.org,
	jonathan@...masters.org, kjwinchester@...il.com, linux@...mer.net
Subject: Re: [PATCH 3/3] net: wireless: bcm43xx: big_buffer_sem semaphore
	to mutex


* Michael Buesch <mb@...sch.de> wrote:

> On Wednesday 19 December 2007 09:11:02 Larry Finger wrote:
> > > 
> > > or could tsc being marked as unstable have anything to do with the
> > > speed of network transfers?
> > 
> > Absolutely not.
> 
> Well, if the clocksource of the machine is unstable it _can_ cause all 
> kinds of weird things. If you think something is broken in the tsc 
> stuff, please switch to using another clocksource.

also, if it gets marked unstable (which is typical on laptops) then the 
kernel switches to a more stable, non-TSC clocksource automatically. 
(hpet or pit)

	Ingo
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