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From: Jesper Juhl <jj@chaosbits.net>
To: Pekka Enberg <penberg@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Ingo Molnar <mingo@elte.hu>,
	Daniel Lezcano <daniel.lezcano@free.fr>,
	Eric Paris <eparis@redhat.com>,
	Roman Zippel <zippel@linux-m68k.org>,
	linux-kbuild@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>
Subject: Re: PATCH][RFC][resend] CC_OPTIMIZE_FOR_SIZE should default to N
Date: Tue, 22 Mar 2011 09:25:56 +0100 (CET)	[thread overview]
Message-ID: <alpine.LNX.2.00.1103220925010.30171@swampdragon.chaosbits.net> (raw)
In-Reply-To: <AANLkTinmAJsXy=iJ5Fq-+CLTAGXTtLGhULRUf=Q1rkY1@mail.gmail.com>

On Tue, 22 Mar 2011, Pekka Enberg wrote:

> Hi Jesper,
> 
> On Mon, Mar 21, 2011 at 10:08 PM, Jesper Juhl <jj@chaosbits.net> wrote:
> > I believe that the majority of systems we are built on want a -O2 compiled
> > kernel. Optimizing for size (-Os) is mainly benneficial for embedded
> > systems and systems with very small CPU caches (correct me if I'm wrong).
> 
> Please take a look at commit 0910b44 ("Expose "Optimize for size"
> option for everybody") for the reasoning behind defaulting to -Os.
> 
Thank you for that pointer Pekka. I guess I need to update my view on -Os.

-- 
Jesper Juhl <jj@chaosbits.net>       http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.


  reply	other threads:[~2011-03-22  8:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-21 20:08 Jesper Juhl
2011-03-22  2:52 ` Steven Rostedt
2011-03-22  8:21 ` Pekka Enberg
2011-03-22  8:25   ` Jesper Juhl [this message]
2011-03-22 10:27   ` Ingo Molnar
2011-03-22 16:59     ` Linus Torvalds
2011-03-23 17:45       ` Andi Kleen
2011-03-23 21:14       ` Ingo Molnar

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