From: Tom Rini <trini@konsulko.com>
To: "Pali Rohár" <pali@kernel.org>
Cc: "Simon Glass" <sjg@chromium.org>,
"Heinrich Schuchardt" <xypron.glpk@gmx.de>,
"Alexander Graf" <agraf@csgraf.de>,
"Huan Wang" <alison.wang@nxp.com>,
"Angelo Dureghello" <angelo@sysam.it>,
"Wolfgang Denk" <wd@denx.de>,
"Priyanka Jain" <priyanka.jain@nxp.com>,
"Christophe Leroy" <christophe.leroy@c-s.fr>,
"Bin Meng" <bmeng.cn@gmail.com>,
"Marek Behún" <marek.behun@nic.cz>,
"U-Boot Mailing List" <u-boot@lists.denx.de>
Subject: Re: [PATCH 11/11] Remove including timestamp.h in version.h
Date: Mon, 2 Aug 2021 17:31:00 -0400 [thread overview]
Message-ID: <20210802213100.GG9379@bill-the-cat> (raw)
In-Reply-To: <20210802194223.5myvz6l27rjkfrld@pali>
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On Mon, Aug 02, 2021 at 09:42:23PM +0200, Pali Rohár wrote:
> On Monday 02 August 2021 13:21:58 Simon Glass wrote:
> > Hi Pali,
> >
> > On Mon, 2 Aug 2021 at 07:20, Pali Rohár <pali@kernel.org> wrote:
> > >
> > > Header file version.h does not use anything from timestamp.h. Including of
> > > timestamp.h has side effect which cause recompiling object file at every
> > > make run because timestamp.h changes at every run.
> > >
> > > So remove timestamp.h from version.h and include timestamp.h in files
> > > which needs it.
> > >
> > > This change reduce recompilation time of final U-Boot binary when U-Boot
> > > source files were not changed as less source files needs to be recompiled.
> > >
> > > Signed-off-by: Pali Rohár <pali@kernel.org>
> > > ---
> > > arch/arm/mach-rockchip/tpl.c | 4 ++++
> > > board/work-microwave/work_92105/work_92105_display.c | 1 +
> > > cmd/version.c | 1 +
> > > common/spl/spl.c | 4 ++++
> > > drivers/rtc/emul_rtc.c | 2 +-
> > > include/version.h | 2 --
> > > 6 files changed, 11 insertions(+), 3 deletions(-)
> >
> > Reviewed-by: Simon Glass <sjg@chromium.org>
> >
> > I assume we do actually want to regenerate the timestamp when U-Boot
> > builds, even if nothing has changed. Is that right?
>
> This is current behavior and these my patches do not change it. Patches
> just smartly moves the source of this timestamp (from macros to global
> variable; so source files do not have to be recompiled when external
> global variable changes -- as opposite of macros).
>
> > It could be
> > confusing otherwise, as people cannot 'update' the banner without
> > making a trivial change.
>
> IIRC linux kernel does not change this date 'banner' when nothing was
> changed. So maybe it is, maybe it is not confusing...
I think that if nothing changes the banner not changing is the right
behavior.
Reviewed-by: Tom Rini <trini@konsulko.com>
--
Tom
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next prev parent reply other threads:[~2021-08-02 21:31 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 13:18 [PATCH 00/11] Reduce usage of timestamp macros Pali Rohár
2021-08-02 13:18 ` [PATCH 01/11] Remove #include <timestamp.h> from files which do not need it Pali Rohár
2021-08-02 13:58 ` Tom Rini
2021-09-23 2:07 ` Tom Rini
2021-08-02 13:18 ` [PATCH 02/11] Remove #include <version.h> " Pali Rohár
2021-08-02 13:58 ` Tom Rini
2021-09-23 2:07 ` Tom Rini
2021-08-02 13:18 ` [PATCH 03/11] efi_loader: Use directly version_string variable Pali Rohár
2021-08-02 20:04 ` Heinrich Schuchardt
2021-08-03 7:37 ` Ilias Apalodimas
2021-09-23 2:07 ` Tom Rini
2021-08-02 13:18 ` [PATCH 04/11] version: Move version_string[] from version.h to version_string.h Pali Rohár
2021-08-02 13:58 ` Tom Rini
2021-09-23 2:08 ` Tom Rini
2021-08-02 13:18 ` [PATCH 05/11] m68k: mcf: Remove overloading version_string Pali Rohár
2021-09-23 2:08 ` Tom Rini
2021-08-02 13:18 ` [PATCH 06/11] version: Put version_string[] variable into section .text_version_string Pali Rohár
2021-08-02 13:58 ` Tom Rini
2021-09-16 17:30 ` [PATCH] xtensa: Put U-Boot version string at correct place by linker script Tom Rini
2021-09-16 19:38 ` Francesco Dolcini
2021-09-16 19:42 ` Tom Rini
2021-09-16 19:50 ` Francesco Dolcini
2021-09-16 20:13 ` Tom Rini
2021-09-16 20:23 ` Francesco Dolcini
2021-09-17 5:21 ` Max Filippov
2021-09-17 12:02 ` Tom Rini
2021-09-17 5:14 ` Max Filippov
2021-09-17 12:04 ` Tom Rini
2021-09-17 12:30 ` Max Filippov
2021-08-02 13:18 ` [PATCH 07/11] powerpc: mpc: " Pali Rohár
2021-08-08 11:20 ` [PATCH v2] " Pali Rohár
2021-08-08 11:36 ` Pali Rohár
2021-08-24 5:03 ` Christophe Leroy
2021-08-24 9:46 ` Wolfgang Denk
2021-08-24 5:28 ` Christophe Leroy
2021-08-24 11:28 ` Pali Rohár
2021-09-16 19:17 ` Tom Rini
2021-09-16 19:56 ` [PATCH 1/1] powerpc: Drop version_string placement optimization Tom Rini
2021-09-23 2:09 ` Tom Rini
2021-08-02 13:18 ` [PATCH 08/11] version: Do not make version_string[] variable as a weak Pali Rohár
2021-08-02 13:58 ` Tom Rini
2021-09-23 2:08 ` Tom Rini
2021-08-02 13:18 ` [PATCH 09/11] x86: quark: MRC: Remove U_BOOT_DATE and U_BOOT_TIME from debug log Pali Rohár
2021-08-02 19:21 ` Simon Glass
2021-08-02 23:25 ` Bin Meng
2021-09-23 2:08 ` Tom Rini
2021-08-02 13:18 ` [PATCH 10/11] version: Remove global macro U_BOOT_VERSION_STRING from version.h Pali Rohár
2021-08-02 13:59 ` Tom Rini
2021-09-23 2:08 ` Tom Rini
2021-08-02 13:18 ` [PATCH 11/11] Remove including timestamp.h in version.h Pali Rohár
2021-08-02 19:21 ` Simon Glass
2021-08-02 19:42 ` Pali Rohár
2021-08-02 21:31 ` Tom Rini [this message]
2021-08-04 5:59 ` Wolfgang Denk
2021-08-04 12:44 ` Tom Rini
2021-08-04 14:36 ` Simon Glass
2021-08-04 14:40 ` Tom Rini
2021-08-04 21:46 ` Pali Rohár
2021-08-04 21:43 ` Sean Anderson
2021-08-04 21:52 ` Pali Rohár
2021-08-04 22:09 ` Tom Rini
2021-08-04 22:14 ` Pali Rohár
2021-08-04 22:15 ` Tom Rini
2021-08-04 22:22 ` Pali Rohár
2021-09-23 2:08 ` Tom Rini
2021-08-17 11:02 ` [PATCH 00/11] Reduce usage of timestamp macros Pali Rohár
2021-08-17 13:40 ` Tom Rini
2021-09-01 20:59 ` Tom Rini
2021-09-01 21:05 ` Pali Rohár
2021-09-01 21:17 ` Tom Rini
2021-09-01 21:28 ` Pali Rohár
2021-09-01 21:33 ` Tom Rini
2021-09-01 21:44 ` Pali Rohár
2021-09-01 21:49 ` Pali Rohár
2021-09-10 20:56 ` Pali Rohár
2021-09-10 21:18 ` Tom Rini
2021-09-01 21:56 ` Tom Rini
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