From: David S. Miller Date: Fri, 19 Apr 2024 10:38:04 +0000 (+0100) Subject: Merge branch 'net-rps-lockless' X-Git-Tag: Ubuntu-6.11.0-9.9~1473^2~212 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=78e8311a85fec3902d87093f67a882bcca1a3ae9;p=mirror_ubuntu-kernels.git Merge branch 'net-rps-lockless' Jason Xing says: ==================== locklessly protect left members in struct rps_dev_flow From: Jason Xing Since Eric did a more complicated locklessly change to last_qtail member[1] in struct rps_dev_flow, the left members are easier to change as the same. One thing important I would like to share by qooting Eric: "rflow is located in rxqueue->rps_flow_table, it is thus private to current thread. Only one cpu can service an RX queue at a time." So we only pay attention to the reader in the rps_may_expire_flow() and writer in the set_rps_cpu(). They are in the two different contexts. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=3b4cf29bdab v3 Link: https://lore.kernel.org/all/20240417062721.45652-1-kerneljasonxing@gmail.com/ 1. adjust the protection in a right way (Eric) v2 1. fix passing wrong type qtail. ==================== Signed-off-by: David S. Miller --- 78e8311a85fec3902d87093f67a882bcca1a3ae9