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From: Bernardo Innocenti <bernie@develer.com>
To: Christoph Hellwig <hch@lst.de>,
	uClinux development list <uclinux-dev@uclinux.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [uClinux-dev] Kernel 2.6 size increase
Date: Wed, 23 Jul 2003 23:57:24 +0200	[thread overview]
Message-ID: <200307232357.25128.bernie@develer.com> (raw)
In-Reply-To: <20030723193246.GA836@lst.de>

On Wednesday 23 July 2003 21:32, Christoph Hellwig wrote:

> Yes, we need to get this down again.  What compiler and compiler
> flags are you using?  Could you retry with the following ripped
> from include/linux/compiler.h:
>
> #if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
> #define inline          __inline__ __attribute__((always_inline))
> #define __inline__      __inline__ __attribute__((always_inline))
> #define __inline        __inline__ __attribute__((always_inline))
> #endif

Not much changed:

   text    data     bss     dec     hex filename
 845924   51204   78896  976024   ee498 linux-2.5.x/vmlinux-inline
 840368   48392   78896  967656   ec3e8 linux-2.5.x/vmlinux-noinline

By the way: this is uClinux 2.5.75-uc0. 2.6.0-test1 should be very close.
I'm building with gcc 3.3.1-pre with some ColdFire/uClinux patches.

> I'd especially be interested in the fs/ numbers after this.

 Neither did it change much here:

   text    data     bss     dec     hex filename
 224145    6952    5468  236565   39c15 linux-2.5.x/fs/built-in.o.inline
 223591    6952    5468  236011   399eb linux-2.5.x/fs/built-in.o

> Also -Os on both would be quite cool.

   text    data     bss     dec     hex filename
 845924   51204   78896  976024   ee498 linux-2.5.x/vmlinux-inline-O2
 819276   52460   78896  950632   e8168 linux-2.5.x/vmlinux-inline-Os

   text    data     bss     dec     hex filename
 840368   48392   78896  967656   ec3e8 linux-2.5.x/vmlinux-noinline-O2
 815052   48316   78896  942264   e60b8 linux-2.5.x/vmlinux-noinline-Os

This is quite a saving! I'll send a patch to Greg (uClinux maintainer)
once I've tested it a bit more.


NOTE: I just noticed the 2.4.x kernel was built with -O1 because I
had symbolic debug enabled. That's not fair: 2.4.20 would probably
come out even smaller than I reported!

-- 
  // Bernardo Innocenti - Develer S.r.l., R&D dept.
\X/  http://www.develer.com/

Please don't send Word attachments - http://www.gnu.org/philosophy/no-word-attachments.html



  parent reply	other threads:[~2003-07-23 21:42 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-23 18:46 Bernardo Innocenti
2003-07-23 19:14 ` Richard B. Johnson
2003-07-23 20:07   ` David S. Miller
2003-07-23 21:47     ` Randy.Dunlap
2003-07-23 19:32 ` [uClinux-dev] " Christoph Hellwig
2003-07-23 20:11   ` David S. Miller
2003-07-23 20:15     ` Christoph Hellwig
2003-07-23 20:22       ` David S. Miller
2003-07-23 20:27         ` Christoph Hellwig
2003-07-23 22:35           ` [uClinux-dev] Kernel 2.6 size increase - get_current()? Bernardo Innocenti
2003-07-23 22:37             ` Alan Cox
2003-07-23 23:00               ` Bernardo Innocenti
2003-07-24  5:06                 ` David McCullough
2003-07-24 11:28                   ` Alan Cox
2003-07-24 12:04                     ` David McCullough
2003-07-24 14:48                       ` Alan Cox
2003-07-25 18:25                       ` bill davidsen
2003-07-24 15:30                     ` Hollis Blanchard
2003-07-24 19:37                       ` Alan Cox
2003-07-24 19:51                         ` Hollis Blanchard
2003-07-24 21:20                           ` J.A. Magallon
2003-07-25  4:22                             ` Otto Solares
2003-07-25 14:38                               ` Hollis Blanchard
2003-07-28  3:19                                 ` Miles Bader
2003-07-28  8:14                                   ` Ihar "Philips" Filipau
2003-07-28  8:58                                     ` Miles Bader
2003-07-28  9:03                                       ` Ihar "Philips" Filipau
2003-07-23 21:57   ` Bernardo Innocenti [this message]
2003-07-23 22:07     ` [uClinux-dev] Kernel 2.6 size increase Bernardo Innocenti
2003-07-23 22:27       ` Willy Tarreau
2003-07-23 22:34         ` Alan Cox
2003-07-24 20:27         ` Bernardo Innocenti
2003-07-25 15:46           ` Christoph Hellwig
2003-07-25 23:55             ` [PATCH] Make I/O schedulers optional (Was: Re: Kernel 2.6 size increase) Bernardo Innocenti
2003-07-26  8:17               ` Andrew Morton
2003-07-26 12:40                 ` Bernardo Innocenti
2003-07-26 14:07                   ` Jens Axboe
2003-07-26 23:42                     ` Bernardo Innocenti
2003-07-26 23:41                       ` Jens Axboe
2003-07-28 17:13             ` [uClinux-dev] Kernel 2.6 size increase Nicolas Pitre
2003-07-28 23:02               ` Bernardo Innocenti
2003-07-29  2:36                 ` Miles Bader
2003-08-08 13:25                 ` [uClinux-dev] " David Woodhouse
2003-08-08 14:37                   ` Bernardo Innocenti
2003-08-08 14:43                     ` David Woodhouse
2003-07-25 18:16           ` bill davidsen
2003-07-29 22:29           ` Tom Rini
2003-07-29 22:48             ` Alan Cox
2003-07-29 23:06               ` Tom Rini
2003-07-30  2:07                 ` Miles Bader
2003-07-30 15:33                   ` Tom Rini
2003-07-31  1:49                     ` Miles Bader
2003-07-31  4:17                       ` Tom Rini
2003-07-31  5:03                         ` Miles Bader
2003-07-31 15:24                           ` Tom Rini
2003-07-30  2:49             ` [uClinux-dev] " Bernardo Innocenti
2003-07-30 15:35               ` Tom Rini
2003-07-30 16:45                 ` [uClinux-dev] Kernel 2.6 size increase (PATCH) Bernardo Innocenti
2003-07-25 20:42 [uClinux-dev] Kernel 2.6 size increase John Bradford

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