Björn Töpel <bjorn.topel@xxxxxxxxx> writes: > This two-patch series introduces load-acquire/store-release barriers > for the AF_XDP rings. > > For most contemporary architectures, this is more effective than a > SPSC ring based on smp_{r,w,}mb() barriers. More importantly, > load-acquire/store-release semantics make the ring code easier to > follow. > > This is effectively the change done in commit 6c43c091bdc5 > ("documentation: Update circular buffer for > load-acquire/store-release"), but for the AF_XDP rings. > > Both libbpf and the kernel-side are updated. > > Full details are outlined in the commits! > > Thanks to the LKMM-folks (Paul/Alan/Will) for helping me out in this > complicated matter! > > @Andrii I kept the barriers in libbpf_util.h to separate userfacing > APIs (xsk.h) from internals. > > @Toke I kept "barriers" but reworded. Acquire/release are also > barriers. Right, that text is better - thanks! Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>