From: Hui Zhu <[email protected]> While back-porting "mm: bpf kfuncs to access memcg data", I encountered issues with test_cgroup_iter_memcg, specifically in test_kmem.
These patches are my fixes for the problems I encountered. Changelog: v2: According to the comments of JP Kobryn, added bpf_core_enum_value() usage in the BPF program to handle cross-kernel enum value differences at load-time instead of compile-time. Dropped the mm/memcontrol.c patch. Modified test_kmem handling: instead of skipping when nokmem is set, verify that kmem value is zero as expected. According to the comments of bot, fixed assertion message: changed "bpf_mem_cgroup_page_state" to "bpf_mem_cgroup_vm_events" for PGFAULT check. Hui Zhu (3): bpf: Use bpf_core_enum_value for stats in cgroup_iter_memcg selftests/bpf: Check bpf_mem_cgroup_page_state return value bpf: selftests: Skip kmem test when cgroup.memory=nokmem is set .../bpf/prog_tests/cgroup_iter_memcg.c | 42 +++++++++++++++++++ .../selftests/bpf/progs/cgroup_iter_memcg.c | 41 ++++++++++++++---- 2 files changed, 76 insertions(+), 7 deletions(-) -- 2.43.0
