tree 9bb19fa07309673dd527ac15e78cf6251cd5a2e1
parent 118bf168f9f66f757684e653c080d034b34db2ff
author Hengqi Chen <chenhengqi@outlook.com> 1655790338 +0800
committer yonghong-song <ys114321@gmail.com> 1656813212 -0700

libbpf-tools: Allow tcpconnlat to run on old kernels

tcpconnlat uses fentry in BPF programs which may failed on old kernels
which don't have BPF trampline. Let's check fentry support first and
fallback to kprobe if it is not available.

Signed-off-by: Hengqi Chen <chenhengqi@outlook.com>