Make libbpf bump RLIMIT_MEMLOCK, similarly to BCC, if kernel is old enough to
use memcg-based memory accounting for BPF. Patch #2 drops explicit
setrlimi(RLIMIT_MEMLOCK) calls in test_progs, test_maps, and test_verifier.
v3->v4:
- use detection based on bpf_ktime_get_coarse_ns() helper (Daniel);
v2->v3:
- use difference in fdinfo's memlock reporting to detect memcg;
v1->v2:
- fix up out-of-sync comments (Toke).
Andrii Nakryiko (2):
libbpf: auto-bump RLIMIT_MEMLOCK if kernel needs it for BPF
selftests/bpf: remove explicit setrlimit(RLIMIT_MEMLOCK) in main
selftests
tools/lib/bpf/bpf.c | 81 +++++++++++++++++++
tools/lib/bpf/bpf.h | 2 +
tools/lib/bpf/libbpf.c | 47 +++--------
tools/lib/bpf/libbpf.map | 1 +
tools/lib/bpf/libbpf_internal.h | 39 +++++++++
tools/lib/bpf/libbpf_legacy.h | 12 ++-
tools/testing/selftests/bpf/bench.c | 16 ----
tools/testing/selftests/bpf/prog_tests/btf.c | 1 -
.../bpf/prog_tests/select_reuseport.c | 1 -
.../selftests/bpf/prog_tests/sk_lookup.c | 1 -
.../selftests/bpf/prog_tests/sock_fields.c | 1 -
tools/testing/selftests/bpf/test_maps.c | 1 -
tools/testing/selftests/bpf/test_progs.c | 2 -
tools/testing/selftests/bpf/test_verifier.c | 4 +-
14 files changed, 146 insertions(+), 63 deletions(-)
--
2.30.2
