Sun Jian says:
====================
selftests/bpf: fix bpf_cookie failures
Fix bpf_cookie failures due to missing bpf_testmod and flaky perf_event
triggering.
Tested:
./test_progs -t bpf_cookie/perf_event -vv (30 runs): 0 failures
./test_progs -t bpf_cookie -vv
====================
Link: https://patch.msgid.link/20260228074555.122950-1-sun.jian.kdev@gmail.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>