Re: Improve init/Kconfig help descriptions [PATCH 6/9]

["Paul Menage" <menage@google.com>]

On Feb 19, 2008 6:54 PM, Nick Andrew <nick@nick-andrew.net> wrote:
>
> config CGROUPS
>         bool "Control Group support"
>         help
>           Control Groups enables processes to be tracked and grouped
>           into "cgroups". This enables you, for example, to associate
>           cgroups with certain CPU sets using "cpusets".
>
>           When enabled, a new filesystem type "cgroup" is available
>           and can be mounted to control cpusets and other
>           resource/behaviour controllers.
>
>           See <file:Documentation/cgroups.txt> for more information.
>
>           If unsure, say N.
>
>
> I don't think that description is as clear as it could be. From
> the non-kernel-developer point of view, that is.

Originally this wasn't a user-selectable config value, it was
auto-selected by any subsystem that needed it. I think that was nicer
from the user-experience, and it would eliminate the need for this
documentation but there were concerns that this triggered unspecified
brokenness in the Kbuild system.

>
> Re "other resource/behaviour controllers", what in particular?
> I take it that our current controllers are cpusets, scheduler,
> CPU accounting and Resource counters?

Resource counters aren't a resource controller, they're a helper
library. The others are good examples, as is the memory controller
that's just been added to 2.6.25.

Paul