Standard BDF attribute for PCI devices

[eero-t]

Area(s)

No response

What's missing?

Many of the HW devices are on the PCIx bus. A good way to identify PCI device is by its BDF: https://en.wikipedia.org/wiki/PCI_configuration_space#BDF

But currently there's no spec for specifying that.

Describe the solution you'd like

I think hw.bdf or hw.pci.bdf should be a recommended attribute for devices on a PCIx bus: https://opentelemetry.io/docs/specs/semconv/hardware/common/

(Another place for such attribute could be a separate section on PCI devices. Level-Zero Sysman API lists some potential common attributes for them, starting from here: https://oneapi-src.github.io/level-zero-spec/level-zero/latest/sysman/api.html#zes-pci-address-t)

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