Logistics:
Monday, June 25th
Tuesday, June 26th
We have the "Garden Suite" in Les Suites Ottawa at our disposal 9AM - 6PM
(thanks Intel).
The room has 20 seats. It also has natural light:-)
Format:
Hopefully small enough that we can hold single threaded round-table discussions.
We'll also have a projector so folks can make some short presentations to get
people
in the room on the same page.
Record:
I volunteer to take notes.
After the meetings I'll send them to the attendees for review.
With Mark, I also volunteer to present them at the OLS PM BOF,
and send them to linux-pm, and LWN.
Attendees:
I believe the 12 below will attend -- please correct me if I'm mistaken.
I didn't include folks who said "maybe," or folks who "might drop-in."
(order is arbitrary here, based on copy/paste from my mailbox)
If you want a better "personal summary" for the notes than
I conjured up here, please sent it to me and I'll get it right next time.
Len Brown <[EMAIL PROTECTED]>
Linux Kernel ACPI Maintainer
Willing to give a 30-min ACPI PM presentation,
though if attendees are mostly focused on non-ACPI embedded,
happy to skip doing so.
Dave Jones <[EMAIL PROTECTED]>
Fedora Maintainer, Linux Kernel Cpufreq Maintainer
Len wants Dave to lead a candid discussion on
the lessons learned from cpufreq.
Mark Gross <[EMAIL PROTECTED]>
Intel OTC embedded Linux team
Tariq Shureih <[EMAIL PROTECTED]>
Intel OTC MID power policy manager
"Pedersen Klaus.K (Nokia-M/Helsinki)" <[EMAIL PROTECTED]>
Igor Stoppa <[EMAIL PROTECTED]>
Poussa Sakari <[EMAIL PROTECTED]>
Will make a short presentation about latest developments
in Nokia N800 power management area.
Matthew Locke <[EMAIL PROTECTED]>
"Eugeny S. Mints" <[EMAIL PROTECTED]>
Our primary interest is unified
cross platforms pm API to control pm hardware (covering both x86 and
embedded),
constraints (including latencies) engine, pm subsystem/drivers
interface, API
for use case driven pm.
"Scott E. Preece" <[EMAIL PROTECTED]>
I would love to see agreement on a way to structure PM so that different
kinds of systems could better meet their different goals...
Vivek Kashyap <[EMAIL PROTECTED]>
Kenneth <[EMAIL PROTECTED]>
We are interested in cross
platform (PowerPC, x86) power management, pm controls and policies,
pm based scheduling, pm in presence of hypervisors, and power scaled
cpu utilization statistics.
Agenda Suggestions:
With 3+ weeks to go, it is time to firm up the agenda.
To seed the discussion, here are some notes from my mailbox:
From: Poussa Sakari <[EMAIL PROTECTED]>
we in this context mean people involved in Nokia Internet Tablet
power management development (Igor, Klaus and myself).
- Presentation of DVFS in Nokia N800 including
- integration with clock framework and needed enhancements
- role of the voltage and other frameworks
- Future power management challenges in Nokia Internet Tablets
- next omap and new requirements
- power aware applications and policies
- pm interface between kernel and pm aware applications
- Current budgeting in embedded USB host
- how to balance the current flow from battery to usb peripheral
- How to use the clk fw to express constraints
- between clocks
- between clocks and voltages
- How to address power domains with timeouts
- simple bitfields management example
From: Amit Kucheria
1. Unified interface to dynamic/runtime PM for laptop/server and
embedded platforms - Does it make sense?
2. Enhancements to Linux driver model to handle dynamic PM
3. Where should policy be located? Drivers or userspace or a mix of both?
4. Interfaces to userspace policy manager
5. Can x86 device drivers and bus drivers do more runtime PM? Similar
to some of the USB work being carried on by Alan/David.
6. What can be done to ensure Suspend To RAM _always_ works? Video
drivers are the big problem now, anything else?
7. Using wakeup latency as a parameter to decide how deep we want to sleep
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