linux-kernel - Re: [PATCH 0/3] rtc: remove modular usage from non-modular code

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Date:   Fri, 4 Nov 2016 23:30:53 +0100
From:   Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:     Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:     linux-kernel@...r.kernel.org,
        Alessandro Zummo <a.zummo@...ertech.it>,
        "David S. Miller" <davem@...emloft.net>,
        rtc-linux@...glegroups.com, sparclinux@...r.kernel.org
Subject: Re: [PATCH 0/3] rtc: remove modular usage from non-modular code

On 31/10/2016 at 14:55:24 -0400, Paul Gortmaker wrote :
> My ongoing audit looking for non-modular code that needlessly uses
> modular macros (vs. built-in equivalents) and/or has dead code
> relating to module unloading that can never be executed led to the
> creation of these rtc related commits.
> 
> For anyone new to the underlying goal of this cleanup, we are trying to
> not use module support for code that can never be built as a module since:
> 
>  (1) it is easy to accidentally write unused module_exit and remove code
>  (2) it can be misleading when reading the source, thinking it can be
>      modular when the Makefile and/or Kconfig prohibit it
>  (3) it requires the include of the module.h header file which in turn
>      includes nearly everything else, thus adding to CPP overhead.
>  (4) it gets copied/replicated into other code and spreads like weeds.
> 
> Build tested on current linux-next (sparc32) to ensure no silly typos
> or implicit include issues that would break compilation crept in.
> 
> ---
> 
> Cc: Alessandro Zummo <a.zummo@...ertech.it>
> Cc: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: rtc-linux@...glegroups.com
> Cc: sparclinux@...r.kernel.org
> 
> Paul Gortmaker (3):
>   rtc: make rtc-lib explicitly non-modular
>   rtc: sparc: make starfire explicitly non-modular
>   rtc: sparc: make sun4v explicitly non-modular
> 
>  drivers/rtc/rtc-lib.c      |  4 +---
>  drivers/rtc/rtc-starfire.c | 10 ++++------
>  drivers/rtc/rtc-sun4v.c    | 10 ++++------
>  3 files changed, 9 insertions(+), 15 deletions(-)
> 
Applied, thanks.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com