linux-kernel - Re: [PATCH]x86-tsc.c : fix compile warning

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Message-ID: <20090618072758.GI22013@balbir.in.ibm.com>
Date:	Thu, 18 Jun 2009 12:57:58 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Frans Pop <elendil@...net.nl>,
	Subrata Modak <subrata@...ux.vnet.ibm.com>,
	"Figo.zhang" <figo1802@...il.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Sumit Panchasara <sumit.panchasara@...fochips.com>,
	"'Sachin P Sant'" <sachinp@...ux.vnet.ibm.com>,
	"'H. Peter Anvin'" <hpa@...or.com>,
	"'Andi Kleen'" <andi@...stfloor.org>,
	"'Thomas Gleixner'" <tglx@...utronix.de>,
	Jaswinder Singh Rajput <jaswinder@...nel.org>
Subject: Re: [PATCH]x86-tsc.c : fix compile warning

* Ingo Molnar <mingo@...e.hu> [2009-06-17 18:23:03]:

> 
> * Frans Pop <elendil@...net.nl> wrote:
> 
> > On Wednesday 17 June 2009, Ingo Molnar wrote:
> > > Ah, and you fixed in what a superior way: you improved the code in
> > > the process :-) This is how warnings should be fixed really.
> > 
> > Hmm. Did you also see Pavel's reply to that patch [1]:
> > ! But that's a bug to be fixed, I'd say? ... actually I believe you are
> > ! introducing a bug here. Yes, old code would put random numbers in
> > ! loops_per_jiffy_ref for !CPUFREQ_CONST_LOOPS, but you are introducing
> > ! oops there.
> > 
> > Was his comment incorrect?
> > 
> > Cheers,
> > FJP
> > 
> > [1] http://lkml.org/lkml/2009/5/24/159
> 
> hm, Pavel seems right - i missed that. Subrata, mind sending an 
> updated patch?
>

Hi, Ingo,

Yes, it does seem that we'll oops at *lpj, but to be honest the code
is badly written, ideally the CONFIG_SMP part should be abstracted
out, having that in a if loop makes reading it time consuming and
kills a few neuro cells each time.
 

-- 
	Balbir
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