Le Wed, 28 May 2025 09:31:20 +0200, Paolo Abeni <pabeni@xxxxxxxxxx> a écrit : > On 5/24/25 12:56 PM, Kory Maincent wrote: > > From: Kory Maincent (Dent Project) <kory.maincent@xxxxxxxxxxx> > > > > This series brings support for budget evaluation strategy in the PSE > > subsystem. PSE controllers can set priorities to decide which ports should > > be turned off in case of special events like over-current. > > > > This patch series adds support for two budget evaluation strategy. > > 1. Static Method: > > > > This method involves distributing power based on PD classification. > > It’s straightforward and stable, the PSE core keeping track of the > > budget and subtracting the power requested by each PD’s class. > > > > Advantages: Every PD gets its promised power at any time, which > > guarantees reliability. > > > > Disadvantages: PD classification steps are large, meaning devices > > request much more power than they actually need. As a result, the power > > supply may only operate at, say, 50% capacity, which is inefficient and > > wastes money. > > > > 2. Dynamic Method: > > > > To address the inefficiencies of the static method, vendors like > > Microchip have introduced dynamic power budgeting, as seen in the > > PD692x0 firmware. This method monitors the current consumption per port > > and subtracts it from the available power budget. When the budget is > > exceeded, lower-priority ports are shut down. > > > > Advantages: This method optimizes resource utilization, saving costs. > > > > Disadvantages: Low-priority devices may experience instability. > > > > The UAPI allows adding support for software port priority mode managed from > > userspace later if needed. > > > > Patches 1-2: Add support for interrupt event report in PSE core, ethtool > > and ethtool specs. > > Patch 3: Adds support for interrupt and event report in TPS23881 driver. > > Patches 4,5: Add support for PSE power domain in PSE core and ethtool. > > Patches 6-8: Add support for budget evaluation strategy in PSE core, > > ethtool and ethtool specs. > > Patches 9-11: Add support for port priority and power supplies in PD692x0 > > drivers. > > Patches 12,13: Add support for port priority in TPS23881 drivers. > > > > Signed-off-by: Kory Maincent (Dent Project) <kory.maincent@xxxxxxxxxxx> > > I'm sorry, even if this has been posted (just) before the merge window, > I think an uAPI extension this late is a bit too dangerous, please > repost when net-next will reopen after the merge window. Ok I will. Would it be possible to review the netlink part of the series? (patch 2, 7 and 8) Regard, -- Köry Maincent, Bootlin Embedded Linux and kernel engineering https://bootlin.com
