linux-kernel - Re: [patch] measurements, numbers about CONFIG_OPTIMIZE

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Message-ID: <alpine.LFD.2.00.0901091227040.6528@localhost.localdomain>
Date:	Fri, 9 Jan 2009 12:29:08 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Nicholas Miell <nmiell@...cast.net>
cc:	Ingo Molnar <mingo@...e.hu>, jim owens <jowens@...com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Chris Mason <chris.mason@...cle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	paulmck@...ux.vnet.ibm.com, Gregory Haskins <ghaskins@...ell.com>,
	Matthew Wilcox <matthew@....cx>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>,
	Peter Morreale <pmorreale@...ell.com>,
	Sven Dietrich <SDietrich@...ell.com>
Subject: Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y
 impact



On Fri, 9 Jan 2009, Nicholas Miell wrote:
> 
> Maybe the kernel's backtrace code should be fixed instead of blaming
> gcc.

And maybe people who don't know what they are talking about shouldn't 
speak?

You just loaded the whole f*cking debug info just to do that exact 
analysis. Guess how big it is for the kernel?

Did you even read this discussion? Did you see my comments about why 
kernel backtrace debugging is different from regular user mode debugging?

			Linus
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