linux-kernel - Re: [PATCH v2] firmware/Makefile: force recompilation if makefile changes

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Message-ID: <CAB=NE6U9c9=vui99QLH-cg=MAT2antTGKqMvKFswB1w+7Xnv5Q@mail.gmail.com>
Date:   Thu, 16 Mar 2017 10:55:40 -0700
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Michal Marek <mmarek@...e.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Ming Lei <ming.lei@...onical.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tom Gundersen <teg@...m.no>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH v2] firmware/Makefile: force recompilation if makefile changes

On Thu, Mar 16, 2017 at 10:43 AM, Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
> Hi Luis,
>
> 2017-03-15 9:53 GMT+09:00 Luis R. Rodriguez <mcgrof@...nel.org>:
>> On Sat, Mar 11, 2017 at 02:37:02PM +0900, Masahiro Yamada wrote:
>>> Hi Luis,
>>>
>>>
>>> 2017-01-24 0:07 GMT+09:00 Luis R. Rodriguez <mcgrof@...nel.org>:
>>> > If you modify the target asm we currently do not force the
>>> > recompilation of the firmware files. The target asm is in
>>> > the firmware/Makefile, peg this file as a dependency to
>>> > require re-compilation of firmware targets when the asm
>>> > changes.
>>> >
>>> > Signed-off-by: Luis R. Rodriguez <mcgrof@...nel.org>
>>> > ---
>>> >
>>> > Michal,
>>> >
>>> > I had this patch as part of my linker table series [0] but have split it
>>> > off as its a small atomic separate change and can go in separately. Greg
>>> > prefers this be reviewed by the kbuild tree so sending it your way.
>>> > This v2 has no modifications, just resending it to the kbuild tree.
>>> >
>>> > [0] https://lkml.kernel.org/r/20170115211057.17167-1-mcgrof@kernel.org
>>> >
>>> >  firmware/Makefile | 3 ++-
>>> >  1 file changed, 2 insertions(+), 1 deletion(-)
>>> >
>>> > diff --git a/firmware/Makefile b/firmware/Makefile
>>> > index e297e1b52636..fa3e81c2a97b 100644
>>> > --- a/firmware/Makefile
>>> > +++ b/firmware/Makefile
>>> > @@ -176,7 +176,8 @@ quiet_cmd_fwbin = MK_FW   $@
>>> >  wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \
>>> >                 include/config/ppc32.h include/config/ppc64.h \
>>> >                 include/config/superh32.h include/config/superh64.h \
>>> > -               include/config/x86_32.h include/config/x86_64.h)
>>> > +               include/config/x86_32.h include/config/x86_64.h \
>>> > +               firmware/Makefile)
>>> >
>>> >  $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps)
>>> >         $(call cmd,fwbin,$(patsubst %.gen.S,%,$@))
>>>
>>>
>>> Why don't you use  $(call filechk,...) or $(call if_changed,...)
>>> instead of wordsize_deps ?
>>
>> Care to send a patch?
>
>
> Sorry for my late reply.
>
> Yes, if you want, I will give it a try.
>
> But, please wait until this weekend...

Andrew picked up my patch already as its been sitting in limbo without
any feedback for a long time --- so you can work off of what is on
linux-next or we can request Andrew to drop this patch once and if you
get a replacement as its not yet on Linus' tree.

  Luis