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From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 0/4] Big acceleration of Kbuild performance
Date: Thu, 27 Feb 2014 14:13:24 -0700	[thread overview]
Message-ID: <530FAA74.7010503@wwwdotorg.org> (raw)
In-Reply-To: <1393511304-9432-1-git-send-email-yamada.m@jp.panasonic.com>

On 02/27/2014 07:28 AM, Masahiro Yamada wrote:
> Kbuild brought about many advantages for us but
> a significant performance regression was reported by
> Simon Glass.
> 
> After some discussions and analysis, it turned out
> its main cause is in $(call cc-option,...).
...
> Instead, you can also try my local branch for easy test.
> 
> I pushed my local branch to my GitHub page.
> Please try the following.
> 
>  (1) git clone git://github.com/masahir0y/u-boot-kbuild.git
>  (2) cd u-boot-kbuild
>  (3) git checkout optimize_v1

I tried that since it was easier than applying all the patches. It built
and ran on real HW OK, although the U-Boot banner is a bit broken:

U-Boot SPL __DUMMY__ (DUMMY - DUMMY)


__DUMMY__ (DUMMY - DUMMY)

TEGRA20
Board: NVIDIA Seaboard
...
Hit any key to stop autoboot:  0
Tegra20 (SeaBoard) #

  parent reply	other threads:[~2014-02-27 21:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-27 14:28 [U-Boot] [PATCH 0/4] Big acceleration of Kbuild performance Masahiro Yamada
2014-02-27 14:28 ` [U-Boot] [PATCH 1/4] kbuild, blackfin: Add CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED Masahiro Yamada
2014-02-27 14:28 ` [U-Boot] [PATCH 2/4] kbuild: add CONFIG_ prefix to USE_PRIVATE_LIBS Masahiro Yamada
2014-02-27 17:07   ` Stephen Warren
2014-02-28  4:50     ` Masahiro Yamada
2014-02-27 14:28 ` [U-Boot] [PATCH 3/4] config.mk: specify the exact path to standalone linker script Masahiro Yamada
2014-02-27 14:28 ` [U-Boot] [PATCH 4/4] kbuild: improve Kbuild speed Masahiro Yamada
2014-02-27 21:00   ` Simon Glass
2014-02-27 19:51 ` [U-Boot] [PATCH 0/4] Big acceleration of Kbuild performance Tom Rini
2014-02-27 21:13 ` Stephen Warren [this message]
2014-02-28  4:58   ` Masahiro Yamada

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