Hi,
This email is in the form of an inquiry and not a bug report.
When I tried to build bpftool 6.8.0 on my Debian 11 (bullseye) machine it
failed with errors like:
-----------------------------------8<-----------------------------------
$ make
.
.
.
CLANG pid_iter.bpf.o
skeleton/pid_iter.bpf.c:47:14: error: incomplete definition of type
'struct bpf_perf_link'
perf_link = container_of(link, struct bpf_perf_link, link);
.
.
.
skeleton/pid_iter.bpf.c:49:30: error: no member named 'bpf_cookie' in
'struct perf_event'
return BPF_CORE_READ(event, bpf_cookie);
.
.
.
10 errors generated.
make: *** [Makefile:176: pid_iter.bpf.o] Error 1
----------------------------------->8-----------------------------------
This happens because in the generated vmlinux.h from my 5.10 kernel there is
no relevant types regarding the bpf_cookies.
Release v6.7.0 builds fine because it doesn't have this commit [1]. That
leaves me with the following questions:
- Should I stick to v6.7.0?
- Maybe I could use a version of 6.8.0 that reverts the commit [1]?
- Should the newly added bpf cookie section be guarded somehow?
[1] bpftool: Add bpf_cookie to link output
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=cbdaf71f
Cheers,
Shahab
