From: Yonghong Song <y...@fb.com> Date: Wed, 8 Nov 2017 13:37:12 -0800
> Uprobe is a tracing mechanism for userspace programs. > Typical uprobe will incur overhead of two traps. > First trap is caused by replaced trap insn, and > the second trap is to execute the original displaced > insn in user space. ... I don't understand how this is bpf related, and if it is you don't explain it well in the commit message. Thank you.
