On Wed, 19 Apr 2023, tonyj@xxxxxxx wrote: > > For a while Vince was maintaining a page documenting breakage in the > perf_event ABI but last I checked it ended at V4.0. Not sure if he > just stopped updating, or that's where breakage ended :) I actually still try to keep an eye on things. I originally tracked things because we had to work around a lot of those breakages in PAPI. There have been a few breakages since then, mostly in rdpmc support and also some weird things on ARM64. I stopped documenting things as thoroughly in part because despite the common wisdom I don't think the kernel devs care much about ABI breaks at least with the perf interface. Vince
