From: Hou Tao <houtao1@xxxxxxxxxx> Hi, The patchset aims to remove unnecessary synchronizations in cpu-map which were found during code inspection. Patch #1 removes the unnecessary rcu_barrier() when freeing bpf_cpu_map_entry and replaces it by queue_rcu_work(). Patch #2 removes the unnecessary call_rcu() and queue_work() when destroying cpu-map and does the freeing directly. Simply testing the patchset by running xdp_redirect_cpu test for virtio-net and no issues are reported. Hope to get more feedback before removing the RFC tag. As ususal, comments and suggestions are always welcome. Regards, Tao Hou Tao (2): bpf, cpumap: Use queue_rcu_work() to remove unnecessary rcu_barrier() bpf, cpumap: Clean up bpf_cpu_map_entry directly in cpu_map_free kernel/bpf/cpumap.c | 110 +++++++++++++------------------------------- 1 file changed, 31 insertions(+), 79 deletions(-) -- 2.29.2
