From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v8 0/38] Switch over to real Kbuild
Date: Tue, 18 Feb 2014 09:44:08 -0500 [thread overview]
Message-ID: <20140218144408.GB19081@bill-the-cat> (raw)
In-Reply-To: <CAPnjgZ0ajjVqBQ0KprA_EOS7vXy9JY40YcHiTub9jm1FaZGcFQ@mail.gmail.com>
On Sat, Feb 15, 2014 at 06:30:59PM -0700, Simon Glass wrote:
> Hi Masahiro,
>
> On 6 February 2014 14:10, Tom Rini <trini@ti.com> wrote:
> > On Mon, Feb 03, 2014 at 12:46:30PM +0900, Masahiro Yamada wrote:
> >
> >> Hello Simon and Tom,
> >>
> >>
> >> This is my analysis of Kbuild performance.
> > [snip]
> >> Conclusion:
> >> The main reasons of the slow down with Kbuild are "fixdep" and "arg-check".
> >> Both of them are really important features for Kbuild and Kconfig.
> >> - "fixdep" is mandatory for our better life with Kconfig.
> >> - "arg-check" is for perfect dependency tracking.
> >>
>
> Thanks for your detailed analysis of this. The slower build time is
> unfortunate but I think it is worth it. The fixdep thing is similar to
> the penalty from the autoconf series I did a while ago. Maybe the
> scripts can be sped up, I'm not sure.
>
> >>
> >>
> >> > > What's your plan about this series?
> >> > > Are we ready to switch to Kbuild, or need more review?
> >> >
> >> > Lets get the performance problem Simon found figured out, but then
> >> > otherwise, yes, I think we're about ready to merge.
> >>
> >> Tom, are you satisfied with my analisys?
> >
> > I am, yes. I guess if we're unhappy with the times, if we can improve
> > them we can push that back to the kernel and that's a good thing.
>
> Well IMO the sooner this is merged the better so that the Makefiles
> become stable again.
Agreed. Weather ate most of last week for me when I had hoped to clear
out some things and then grab this series. Back at it all now..
--
Tom
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next prev parent reply other threads:[~2014-02-18 14:44 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-29 12:25 [U-Boot] [PATCH v8 0/38] Switch over to real Kbuild Masahiro Yamada
2014-01-29 12:25 ` [U-Boot] [PATCH v8 01/38] .gitignore: ingore files generated by Kbuild Masahiro Yamada
2014-01-29 12:25 ` [U-Boot] [PATCH v8 02/38] Makefile.host.tmp: add a new script to refactor tools Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 03/38] tools: convert makefiles to kbuild style Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 04/38] board: samsung: refactor host programs Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 05/38] examples: Use scripts/Makefile.build Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 06/38] nand-spl: " Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 07/38] Makfile: move suffix rules to Makefile.build Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 08/38] Makefile: move some variable definitions to the top Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 09/38] Makefile: move BFD_ROOT_DIR to tools/gdb/Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 10/38] kbuild: import Kbuild.include from linux v3.13 tag Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 11/38] kbuild: Use Kbuild.include Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 12/38] Makefile: move more flags to the top Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 13/38] Makefile: refactor include path settings Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 14/38] Makefile: move more stuff to top Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 15/38] Makefile: move some flags to spl/Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 16/38] Makefile: move some flags to examples makefiles Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 17/38] kbuild: change out-of-tree build Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 18/38] kbuild: add dummy obj-y to create built-in.o Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 19/38] Makefile: rename scripts/Makefile.build to scripts/Makefile.build.tmp Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 20/38] kbuild: import more build scripts from Linux v3.13 tag Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 21/38] kbuild: use Linux Kernel build scripts Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 22/38] kbuild: delete temporary " Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 23/38] kbuild: move some lines to more suitable place Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 24/38] kbuild: convert some make rules to Kbuild style Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 25/38] kbuild: move include directives of board configuration files Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 26/38] kbuild: generate {spl, tpl}-autoconf.mk only when it is necessary Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 27/38] Makefile: remove a cleaning target "tidy" Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 28/38] kbuild: change the top Makefile to more Kbuild-ish structure Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 29/38] examples: move api/ and standalone/ entry to examples/Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 30/38] kbuild: refactor Makefile and spl/Makefile more Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 31/38] Makefile: Do not pass MTD_VERSION from the top Makefile Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 32/38] Makefile: refactor tools-all targets Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 33/38] kbuild: use scripts/Makefile.clean Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 34/38] kbuild: support simultaneous board configuration and "make all" Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 35/38] kbuild: check clean source and generate Makefile for out-of-tree build Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 36/38] board: sandburst: delete FORCEBUILD Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 37/38] kbuild: Do not generate .*.su files at the top directory Masahiro Yamada
2014-01-29 12:26 ` [U-Boot] [PATCH v8 38/38] tools/env: cross-compile fw_printenv without setting HOSTCC Masahiro Yamada
2014-01-30 21:35 ` [U-Boot] [PATCH v8 0/38] Switch over to real Kbuild Andreas Bießmann
2014-01-31 1:48 ` Masahiro Yamada
2014-01-31 9:12 ` Masahiro Yamada
2014-02-01 12:09 ` Tom Rini
2014-01-31 20:35 ` Simon Glass
2014-02-03 3:46 ` Masahiro Yamada
2014-02-06 21:10 ` Tom Rini
2014-02-16 1:30 ` Simon Glass
2014-02-16 2:51 ` Simon Glass
2014-02-18 9:02 ` Masahiro Yamada
2014-02-19 6:09 ` Simon Glass
2014-02-19 9:51 ` Masahiro Yamada
2014-02-19 17:28 ` Tom Rini
2014-02-20 8:25 ` Masahiro Yamada
2014-02-20 13:29 ` Tom Rini
2014-02-18 14:44 ` Tom Rini [this message]
2014-02-19 1:57 ` Masahiro Yamada
2014-02-19 12:54 ` Tom Rini
2014-02-19 13:28 ` Masahiro Yamada
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