Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

Peter Zijlstra
2010-05-28T18:16:24Z

On Fri, 2010-05-28 at 13:27 -0400, Zygo Blaxell wrote:
> From my reading of this thread, there's a lot of overlap between
> suspendblockers and constraints. Many use cases are served equally
> well with one or the other,

If using suspend-blockers,

Please explain to me how:

- I will avoid the cpu going into some idle state for which the wakeup
latency is larger than my RT app fancies?

- to avoid some tasks from being serviced by the filesystems whilst
others are? (ionice on steroids).

- does my sporadic task (with strict bandwidth budget) not suffer
bandwidth inversion?

suspend blockers do a bit of each of that, but none of it in a usable
fashion.