Hello, On Thu, Jul 27, 2023 at 07:44:28AM -1000, Tejun Heo wrote: > Oh yeah, I do. I'm just thinking whether we also want to expose that in the > cgroupfs. We are currently not showing anything per-cpu and the output > formatting gets nasty with a huge number of CPUs, so maybe that's not going > to work out all that well. Anyways, I'll get back to you next week. I couldn't come up with an answer. Let's go ahead with adding the field but can you please do the followings? * Name it to something like subtree_bstat instead of cumul_bstat. The counters are all cumulative. * Are you sure the upward propagation logic is correct? It's calculating global delta and then propagating to the per-cpu delta of the parent. Is that correct because the two delta calculations always end up the same? * Please add a comment explaining that the field is not currently used outside of being read from bpf / drgn and what not and that we're still trying to determine how to expose that in the cgroupfs interface. Thanks. -- tejun
