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

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Message-ID: <CAK7LNATjUKVdnnxJTg6vavux4O5PyBTpz727vRDRx_WqrYunkA@mail.gmail.com>
Date:   Sat, 18 Mar 2017 22:32:56 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        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

Hi Luis,

2017-03-17 2:55 GMT+09:00 Luis R. Rodriguez <mcgrof@...nel.org>:
> 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


OK.   (and, sorry for the delay.)

It is not a good idea to make your work stuck even longer.


> --- 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.
>

Please go ahead with your patch.


When I find time to take a close look,
I may come back to firmware/Makefile.
But, I guess it will not happen soon.



-- 
Best Regards
Masahiro Yamada