Re: [PATCH 0/8] Suspend block api (version 6)

[Alan Stern]

On Wed, 5 May 2010, Brian Swetland wrote:

> > Probably generalizing these into the LDM is the direction to go so
> > userspace can set constraints on a per-device (or per-class?) basis:
> >
> > /sys/devices/.../power/constraint/throughput
> > /sys/devices/.../power/constraint/wakeup_latency
> > /sys/devices/.../power/constraint/... ?
> 
> The constraint stuff is definitely something I'd love to talk about in
> detail.  It's a problem that I think is common to every SoC I've
> worked with.  Having a general solution for this problem (of
> specifying and observing various constraints for clock, power, qos,
> etc) kernel-wide would seem like a big win.
> 
> Might be worth kicking some design ideas around and getting a bunch of
> the interested parties together at some of the upcoming linux
> conference things this fall on the east coast?

The Linux Power-Management Summit is scheduled for August 9, at the 
start of the LinuxCon meeting in Boston.  This would make an excellent 
topic for discussion.

Alan Stern

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