On Sat Feb 28, 2026 at 2:11 AM EST, Hui Zhu wrote: > 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. >
Nit: Could you be a bit more descriptive about the series' contents? Cover letters normally focus on what what the patch does - for example the issues being found during backporting is not pertinent to the patchset itself, because the issues are still present on bpf-next. > Changelog: > v3: > According to the comments of JP Kobryn, remove kmem subtest from > cgroup_iter_memcg and fix assertion string in test_pgfault. > 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): > selftests/bpf: Remove kmem subtest from cgroup_iter_memcg > bpf: Use bpf_core_enum_value for stats in cgroup_iter_memcg > selftests/bpf: Check bpf_mem_cgroup_page_state return value > > .../testing/selftests/bpf/cgroup_iter_memcg.h | 2 - > .../bpf/prog_tests/cgroup_iter_memcg.c | 38 +++++-------------- > .../selftests/bpf/progs/cgroup_iter_memcg.c | 18 ++++++--- > 3 files changed, 22 insertions(+), 36 deletions(-)
