lkml.org 
[lkml]   [2015]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v1 4/6] moduleparam.h: add module_param_config_*() helpers
Date
"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().

Cheers,
Rusty.


\
 
 \ /
  Last update: 2015-04-22 10:21    [W:0.093 / U:0.232 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site