If you read the original commit comment, userspace software needs to opt into this: https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm

If you read the original commit comment, userspace software needs to opt into this: https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=80b6f094756f https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds... If it is not reported for people to know about it, this will do nothing. That said, the opt-in here is only relevant when software has already opted into busy polling, so it likely does not apply to software used outside of datacenters.