From: Justin Forbes on gitlab.com https://gitlab.com/cki-project/kernel-ark/-/merge_requests/560#note_517325292 c9f3401313a5089f100d7d1ef4b75cd7b49b2190 changes this a bit: powerpc: Always enable queued spinlocks for 64s, disable for others Queued spinlocks have shown to have good performance and fairness properties even on smaller (2 socket) POWER systems. This selects them automatically for 64s. For other platforms they are de-selected, the standard spinlock is far simpler and smaller code, and single chips with a handful of cores is unlikely to show any improvement. CONFIG_EXPERT still allows this to be changed, e.g., to help debug performance or correctness issues. If you wish to leave CONFIG_PPC_QUEUED_SPINLOCKS off, we will have to enable CONFIG_EXPERT, and set anything else that it exposes. I have changed pending to CONFIG_PPC_QUEUED_SPINLOCKS=y for now. _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
