Hi, Vlastimil. Thank you for your reply. Indeed, BTF can eliminate the existing problem of data structure parsing. But as far as the current BCC[0] code is concerned, more surgery may be required. Now the bcc problem[1] should probably be solved by the bcc itself using BTF, and should not bother the kernel. I hope the maintenance engineers at BCC can agree with this. Thanks again. [0] https://github.com/iovisor/bcc [1] https://github.com/iovisor/bcc/issues/4438 Best wishes. Rong Tao