Re: [PATCH v2 06/33] Documentation, x86: Documentation for Intel resource allocation user interface

From: Thomas Gleixner
Date: Tue Sep 13 2016 - 09:30:21 EST


On Sun, 11 Sep 2016, Shaohua Li wrote:
> On Sat, Sep 10, 2016 at 12:36:57AM +0000, Yu, Fenghua wrote:
> > One way to implement this is we can extend the current interface to accept
> > a resctrl file system mount parameter to switch b/w "procs" and "tasks" during
> > mount time. So the file sytem has either "procs" or "tasks" during run time. I don't think it's right to have both of them at the same time in the file system.
>
> A mount option doesn't make sense, which just creates more trouble. What's
> wrong to have both of 'procs' and 'tasks' at the same time, like cgroup? I
> think it's more natural to support both. As for the content of 'procs' and
> 'tasks', we could follow how cgroup handle them.

Right. There is nothing wrong with having both, but the very first step is
to get the basic infrastructure merged. Adding 'procs' is a straight
forward add on which can be implemented on top of the primary patch
set. There is no design change required to support it later.

Thanks,

tglx