2023-02-13 11:07 UTC-0800 ~ Stanislav Fomichev <sdf@xxxxxxxxxx> > On 02/13, Alan Jowett wrote: >> BPF, > >> The existing bpf_test_run_opts structure exposes additional fields >> including "flags" and "cpu". I propose extending the bpftool prog run >> to accept options so set these additional fields. > >> Use case: >> Some BPF programs access state that is potentially shared between >> programs running on different CPUs. This can impact the performance of >> a BPF program. To permit users to more accurately assess how their BPF >> program will perform when being invoked on multiple CPUs in parallel I >> am proposing adding the ability for bpftool to set the cpu field in >> bpf_test_run_opts struct when calling the syscall. > >> If no one else is working on this or there are no objections, I will >> submit a patch using bpf-next https://github.com/xdp-project/bpf-next/. > > Patches are welcome. I don't see anything controversial with extending > bpftool with those extra fields. > > PTAL at [0] on how and where to submit the patches. > > 0: https://www.kernel.org/doc/Documentation/bpf/bpf_devel_QA.rst Hi Alan, I agree with Stanislav, this is a welcome addition to bpftool. Quentin
