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Date:   Sun, 22 Sep 2019 13:52:47 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Ingo Molnar <mingo@kernel.org>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
        Brendan Higgins <brendanhiggins@google.com>,
        Shuah Khan <skhan@linuxfoundation.org>,
        Mark Brown <broonie@kernel.org>,
        Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
        Anders Roxell <anders.roxell@linaro.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [GIT PULL] Kselftest update for Linux 5.4-rc1
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On Sun, Sep 22, 2019 at 01:25:55PM +0200, Ingo Molnar wrote:
> 
> * Linus Torvalds <torvalds@linux-foundation.org> wrote:
> 
> > On Fri, Sep 20, 2019 at 9:35 AM Brendan Higgins
> > <brendanhiggins@google.com> wrote:
> > >
> > > Sorry about that. I am surprised that none of the other reviewers
> > > brought this up.
> > 
> > I think I'm "special".
> > 
> > There was some other similar change a few years ago, which I
> > absolutely hated because of how it broke autocomplete for me. Very few
> > other people seemed to react to it.
> 
> FWIW, I am obsessively sensitive to autocomplete and overall source code 
> file hieararchy and nomenclature details as well, so it's not just you.
> 
> Beyond the muscle memory aspect, nonsensical naming and inanely flat file 
> hierarchies annoy kernel developers and makes it harder for newbies to 
> understand the kernel source as well.
> 
> The less clutter, the more organization, the better - and there's very 
> few valid technical reasons to add any new files or directories to the 
> top level directory - we should probably *remove* quite a few.
> 
> For example 'firmware/' was recently moved to drivers/firmware/, and in a 
> similar fashion about a third of the remaining 22 directories should 
> probably be moved too:
> 
>   drwxr-xr-x    arch
>   drwxr-xr-x    block
>   drwxr-xr-x    certs           # move to build/certs/ dir
>   drwxr-xr-x    crypto          # move to kernel/crypto/ or security/crypto/
>   drwxr-xr-x    Documentation
>   drwxr-xr-x    drivers
>   drwxr-xr-x    fs
>   drwxr-xr-x    include
>   drwxr-xr-x    init
>   drwxr-xr-x    ipc             # move to kernel/ipc/
>   drwxr-xr-x    kernel
>   drwxr-xr-x    lib
>   drwxr-xr-x    LICENSES
>   drwxr-xr-x    mm
>   drwxr-xr-x    net
>   drwxr-xr-x    samples         # move to Documentation/samples/
>   drwxr-xr-x    scripts         # move to build/scripts/
>   drwxr-xr-x    security
>   drwxr-xr-x    sound           # move to drivers/sound/
>   drwxr-xr-x    tools
>   drwxr-xr-x    usr             # move to build/usr/
>   drwxr-xr-x    virt            # move to the already existing drivers/virt/
> 
>   -rw-r--r--    COPYING
>   -rw-r--r--    CREDITS
>   -rw-r--r--    Kbuild
>   -rw-r--r--    Kconfig
>   -rw-r--r--    MAINTAINERS
>   -rw-r--r--    Makefile
>   -rw-r--r--    README
> 
> There's a few borderline ones:
> 
>  - 'block' could in principle move to drivers/block/core/ but it's fine 
>    at the top level too I think.
> 
>  - 'init' could in principle be moved to kernel/init/ - but it's not 
>    wrong at the top level either.
> 
> The remaining top level hierarchy would look pretty sweet and short:
> 
>   drwxr-xr-x    arch
>   drwxr-xr-x    block
>   drwxr-xr-x    build             # new
>   drwxr-xr-x    Documentation
>   drwxr-xr-x    drivers
>   drwxr-xr-x    fs
>   drwxr-xr-x    include
>   drwxr-xr-x    init
>   drwxr-xr-x    kernel
>   drwxr-xr-x    lib
>   drwxr-xr-x    LICENSES
>   drwxr-xr-x    mm
>   drwxr-xr-x    net
>   drwxr-xr-x    security
>   drwxr-xr-x    tools
> 
>   -rw-r--r--    COPYING
>   -rw-r--r--    CREDITS
>   -rw-r--r--    Kbuild
>   -rw-r--r--    Kconfig
>   -rw-r--r--    MAINTAINERS
>   -rw-r--r--    Makefile
>   -rw-r--r--    README
> 
> I'm volunteering to do this (in a scripted, repeatable, reviewable, 
> tweakable and "easy to execute in a quiet moment" fashion), although
> I also expect you to balk at the churn. :-)

I for one would love the above changes.  And I'm the one that has to
deal with all of the backporting issues that arise with stable backports :)

thanks,

greg k-h