linux-kernel - Re: [PATCH v2] kbuild: shrink .cache.mk when it exceeds 1000 lines

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Message-ID: <CAK7LNAS0PxHcrG1Ui+eCoqcUvBpfHAxJ0wG=EvZNUqiHy4TMfQ@mail.gmail.com>
Date:   Thu, 19 Oct 2017 01:54:56 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Douglas Anderson <dianders@...omium.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Marcin Nowakowski <marcin.nowakowski@...tec.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Cao jin <caoj.fnst@...fujitsu.com>,
        Arnd Bergmann <arnd@...db.de>,
        Mark Charlebois <charlebm@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v2] kbuild: shrink .cache.mk when it exceeds 1000 lines

2017-10-13 20:25 GMT+09:00 Masahiro Yamada <yamada.masahiro@...ionext.com>:
> The cache files are only cleaned away by "make clean".  If you continue
> incremental builds, the cache files will grow up little by little.
> It is not a big deal in general use cases because compiler flags do not
> change quite often.
>
> However, if you do build-test for various architectures, compilers, and
> kernel configurations, you will end up with huge cache files soon.
>
> When the cache file exceeds 1000 lines, shrink it down to 500 by "tail".
> The Least Recently Added lines are cut. (not Least Recently Used)
> I hope it will work well enough.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
>

Applied to linux-kbuild/kbuild.

-- 
Best Regards
Masahiro Yamada