On Sun, Feb 12, 2023 at 08:23:34PM -0500, Alan Stern wrote: > I really don't think that's a good idea here. When you've got a bus > containing multiple devices, typically all those device structures are > created by the same line of code. So knowing the source code location > won't tell you _which_ device structure is involved in the locking > cycle or what driver it's using. Yeah, I was thinking about this more and realized it'd be insufficient. > By contrast, knowing the device name > would. > > Furthermore, to the extent that the device's name identifies what kind > of device it is, the name would tell you what where the structure was > created and which driver it is using. OTOH, with the device name, it seems like you'll additionally need the full device topology to be able to do anything with lockdep splats, no? What if we just added a way to set a comparison function for a lockdep class? I'm looking at the lockdep code now, and I think I could do that for you.
