Paul Menage wrote:
> On 1/15/07, Balbir Singh <[EMAIL PROTECTED]> wrote:
>> While writing/extending the cpuacct container, I found it useful to
>> know if the container resource group we are controlling is really mounted.
>> Controllers can try and avoid doing work when not mounted and start
>> when the subsystem is mounted. Also, without these callbacks, one has no
>> definite way of checking if the top_container is dummy or for real.
>>
>
> That's somewhat intentional - my aim was that the controllers
> shouldn't really care whether they're connected to the default
> hierarchy or have been bound to some mounted hierarchy. Having said
> thay, they can determine it by checking <foo>_subsys.hierarchy if they
> really want to. If that's 0 then they're in the default hierarchy (and
> can assume that all tasks are in one top-level container).
>
That makes sense, the only additional thing required is to know when
the subsystem really got mounted (we cannot keep polling hierarchy
for it:-))
> Paul
--
Balbir Singh,
Linux Technology Center,
IBM Software Labs
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