From: "Luis R. Rodriguez" <mcgrof@suse.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
keescook@chromium.org, casey@schaufler-ca.com,
cocci@systeme.lip6.fr, Jani Nikula <jani.nikula@intel.com>,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Hannes Reinecke <hare@suse.de>, Tejun Heo <tj@kernel.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH v1 4/6] moduleparam.h: add module_param_config_*() helpers
Date: Wed, 22 Apr 2015 17:42:08 +0200 [thread overview]
Message-ID: <20150422154207.GE5622@wotan.suse.de> (raw)
In-Reply-To: <87mw20ocqv.fsf@rustcorp.com.au>
On Wed, Apr 22, 2015 at 04:45:04PM +0930, Rusty Russell wrote:
> "Luis R. Rodriguez" <mcgrof@do-not-panic.com> writes:
> > From: "Luis R. Rodriguez" <mcgrof@suse.com>
> >
> > This adds a couple of bool module_param_config_*() helpers
> > which are designed to let us easily associate a booloean
> > module parameter with an associated kernel configuration
> > option, and to help us remove #ifdef'ery eyesores.
>
> But they don't. And I had to read the descriptions twice to understand
> what you're doing.
>
> eg you use it like this:
>
> -#ifdef CONFIG_WQ_POWER_EFFICIENT_DEFAULT
> -static bool wq_power_efficient = true;
> -#else
> -static bool wq_power_efficient;
> -#endif
> -
> -module_param_named(power_efficient, wq_power_efficient, bool, 0444);
> +module_param_config_on_off(power_efficient, wq_power_efficient, 0444,
> CONFIG_WQ_POWER_EFFICIENT_DEFAULT);
>
> It would be much clearer to do this:
>
> -#ifdef CONFIG_WQ_POWER_EFFICIENT_DEFAULT
> -static bool wq_power_efficient = true;
> -#else
> -static bool wq_power_efficient;
> -#endif
> +static bool wq_power_efficient = IS_ENABLED(CONFIG_WQ_POWER_EFFICIENT_DEFAULT);
>
> I know exactly what that does without having to notice the difference
> between module_param_config_on_off() and module_param_config_on().
You're right, I forgot a small step patch in between to make the change
clearer. I can add that in my next respin, anything else or do the other
changes look OK?
Luis
next prev parent reply other threads:[~2015-04-22 15:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-20 23:30 [PATCH v1 0/6] module params: few simplifications Luis R. Rodriguez
2015-04-20 23:30 ` Luis R. Rodriguez
2015-04-21 10:20 ` Arend van Spriel
2015-04-20 23:30 ` [PATCH v1 2/6] kernel/module.c: use generic module param operaters for sig_enforce Luis R. Rodriguez
2015-04-20 23:30 ` [PATCH v1 3/6] kernel/params.c: generalize bool_enable_only Luis R. Rodriguez
2015-04-20 23:30 ` [PATCH v1 4/6] moduleparam.h: add module_param_config_*() helpers Luis R. Rodriguez
2015-04-20 23:42 ` Julian Calaby
2015-04-21 16:41 ` Luis R. Rodriguez
2015-04-21 15:21 ` Tejun Heo
2015-04-21 16:55 ` Luis R. Rodriguez
2015-04-21 20:58 ` Tejun Heo
2015-04-22 7:15 ` Rusty Russell
2015-04-22 15:42 ` Luis R. Rodriguez [this message]
2015-04-20 23:30 ` [PATCH v1 5/6] kernel/workqueue.c: use module_param_config_on_off() for power_efficient Luis R. Rodriguez
2015-04-20 23:30 ` [PATCH v1 6/6] kernel/module.c: use module_param_config_on() for sig_enforce Luis R. Rodriguez
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