Hello, > This proposal aims to add a feature that outputs PCIe device power > consumption information to sysfs. > > Add support for PBEC (Power Budgeting Extended Capability) output > to the PCIe driver. PBEC is defined in the > PCIe specification(PCIe r6.0, sec 7.8.1) and is > a standard method for obtaining device power consumption information. > > PCIe devices can significantly impact the overall power consumption of > a system. However, obtaining PCIe device power consumption information > has traditionally been difficult. > > The PBEC Data register changes depending on the value of the PBEC Data > Select register. To obtain all PBEC Data register values defined in the > device, obtain the value of the PBEC Data register while changing the > value of the PBEC Data Select register. Kobayashi-san, we are missing the ABI documentation, which is all that's left to get this series merged. Perhaps even this cycle if you post a v3 somewhat soon ish. お願いします。 An example of a series which shows how to do it: - https://lore.kernel.org/linux-pci/166336088796.3597940.14973499936692558556.stgit@omen The sysfs documentation (see section at the bottom): - https://www.kernel.org/doc/html/latest/filesystems/sysfs.html Krzysztof
