On Wed, 11 Nov 2015 15:29:02 +0100
Johannes Berg <johan...@sipsolutions.net> wrote:
config MY_DRIVER_1
SELECT SET_FLAG
config MY_DRIVER_2
SELECT SET_FLAG
[...]
config FLAG_ALL_SET
default y
depends on MY_DRIVER_1 && !MY_DRIVER_2 && ... && MY_DRIVER_N
> Right. Basically it'd be one of three options:
> * all compiled drivers want the flag set:
> use a static key to make the fast case "flag set"
#if defined(CONFIG_SET_FLAG) && defined(CONFIG_FLAG_ALL_SET)
> * no compiled driver wants the flag set:
> use a static key to make the fast case "flag unset"
#ifndef CONFIG_SET_FLAG
> * different drivers are compiled:
> don't use a static key since we don't know which one will get used
#if defined(CONFIG_FLAG_SET) && !defined(CONFIG_FLAGS_ALL_SET)
-- Steve
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