From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Thu, 27 Feb 2014 14:13:24 -0700 Subject: [U-Boot] [PATCH 0/4] Big acceleration of Kbuild performance In-Reply-To: <1393511304-9432-1-git-send-email-yamada.m@jp.panasonic.com> References: <1393511304-9432-1-git-send-email-yamada.m@jp.panasonic.com> Message-ID: <530FAA74.7010503@wwwdotorg.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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) #