linux-kernel - Re: [PATCH] ARM: decompressor: do not copy source files while building

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Date:   Wed, 30 Mar 2022 17:22:33 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     patches@....linux.org.uk,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: decompressor: do not copy source files while
 building

Hi,

Your reply was too late for me, I've been away on vacation from 14th
March until now... and now I've got a whole truck-load of catch-up, so
it's likely I'll forget to sort this. Please send a patch to fix it,
thanks.

On Fri, Mar 25, 2022 at 11:54:07AM +0900, Masahiro Yamada wrote:
> Hi Russell,
> 
> 
> Was this issue fixed?
> (I see nothing happened in linux-next yet)
> 
> I will not send a patch because I assume you will
> fix this by yourself. If there is something you want
> me, please let me know.
> 
> Thanks.
> Masahiro Yamada
> 
> 
> 
> 
> 
> 
> On Mon, Mar 14, 2022 at 1:35 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
> >
> > On Fri, Mar 11, 2022 at 9:07 PM Russell King (Oracle)
> > <linux@...linux.org.uk> wrote:
> > >
> > > On Sun, Oct 31, 2021 at 02:52:58AM +0900, Masahiro Yamada wrote:
> > > > As commit 7ae4a78daacf ("ARM: 8969/1: decompressor: simplify libfdt
> > > > builds") stated, copying source files during the build time may not
> > > > end up with as clean code as expected.
> > > >
> > > > Do similar for the other library files for further cleanups of the
> > > > Makefile and .gitignore.
> > > >
> > > > Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> > >
> > > Hi,
> > >
> > > I am now seeing the following every time I run a build:
> > >
> > >   GEN     Makefile
> > >   CALL    .../linux-rmk/scripts/atomic/check-atomics.sh
> > >   CALL    .../linux-rmk/scripts/checksyscalls.sh
> > >   CHK     include/generated/compile.h
> > >   Kernel: arch/arm/boot/Image is ready
> > >   AS      arch/arm/boot/compressed/lib1funcs.o
> > >   AS      arch/arm/boot/compressed/ashldi3.o
> > >   AS      arch/arm/boot/compressed/bswapsdi2.o
> > >   LD      arch/arm/boot/compressed/vmlinux
> > >   OBJCOPY arch/arm/boot/zImage
> > >   Kernel: arch/arm/boot/zImage is ready
> > >
> > > In other words, those three objects are always rebuilt even though
> > > they haven't changed.
> > >
> > > I've tried removing the arch/arm/boot/compressed directory in the
> > > build tree, but that doesn't make any difference.
> > >
> > > Running with V=2 shows:
> > >
> > >   AS      arch/arm/boot/compressed/lib1funcs.o - due to lib1funcs.o not in $(tar
> > > gets)
> > >   AS      arch/arm/boot/compressed/ashldi3.o - due to ashldi3.o not in $(targets)
> > >   AS      arch/arm/boot/compressed/bswapsdi2.o - due to bswapsdi2.o not in $(targets)
> > >
> > > It looks to me like:
> > > OBJS    += lib1funcs.o ashldi3.o bswapsdi2.o
> > >
> > > in your patch should have been added before:
> > >
> > > targets       := vmlinux vmlinux.lds piggy_data piggy.o \
> > >                  head.o $(OBJS)
> > >
> > > Please confirm.
> >
> >
> > Sorry for my late reply.
> >
> > Yes, you are right.
> >
> > OBJS    += lib1funcs.o ashldi3.o bswapsdi2.o
> >
> > should come before the 'targets' assignment.
> >
> >
> >
> >
> >
> > --
> > Best Regards
> > Masahiro Yamada
> 
> 
> 
> -- 
> Best Regards
> Masahiro Yamada
> 

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