On 7/21/26 10:48 AM, Ziyang Men wrote:
Add a test_progs selftest that verifies the memory-cgroup BPF kfuncs
return values that agree with what userspace reads from cgroupfs, across
a whole cgroup subtree that has been charged on many CPUs.
It complements the existing cgroup_iter_memcg test. cgroup_iter_memcg
calls the memcg kfuncs on a single cgroup (BPF_CGROUP_ITER_SELF_ONLY) and
only asserts each value is greater than zero, so it never checks that a
value is actually correct. This test compares the kfunc values against
what userspace reads from memory.stat, and checks every node in the
cgroup tree.
Can you extend the existing test instead of adding a new one?
