Re: Cache Allocation Technology Design

Tejun Heo
2014-10-30T12:44:46Z

On Thu, Oct 30, 2014 at 08:14:24AM +0100, Peter Zijlstra wrote:
> On Thu, Oct 30, 2014 at 08:07:25AM +0100, Peter Zijlstra wrote:
> > > and always allow execution of member tasks.
>
> This too btw is not strictly speaking possible for all controllers. Most
> all sched controllers live by the grace of forcing tasks not to run at
> times (eg. the bandwidth controls), falsifying the 'always'.

Oh sure, the a task just has to run in a foreseeable future, or
rather, a task must not be blocked indefinitely requiring userland
intervention to become executable again.

Thanks.

--
tejun