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Date: Tue, 5 Apr 2022 13:52:58 -0700
From: Andrii Nakryiko <andrii.nakryiko@...il.com>
To: Yafang Shao <laoar.shao@...il.com>
Cc: Andrii Nakryiko <andrii@...nel.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Martin Lau <kafai@...com>, Song Liu <songliubraving@...com>,
Yonghong Song <yhs@...com>,
john fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>, Shuah Khan <shuah@...nel.org>,
Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH bpf-next v3 00/27] bpf: RLIMIT_MEMLOCK cleanups
On Tue, Apr 5, 2022 at 6:09 AM Yafang Shao <laoar.shao@...il.com> wrote:
>
> We have switched to memcg based memory accouting and thus the rlimit is
> not needed any more. LIBBPF_STRICT_AUTO_RLIMIT_MEMLOCK was introduced in
> libbpf for backward compatibility, so we can use it instead now.
>
> This patchset cleanups the usage of RLIMIT_MEMLOCK in tools/bpf/,
> tools/testing/selftests/bpf and samples/bpf. The file
> tools/testing/selftests/bpf/bpf_rlimit.h is removed. The included header
> sys/resource.h is removed from many files as it is useless in these files.
>
> - v3: Get rid of bpf_rlimit.h and fix some typos (Andrii)
> - v2: Use libbpf_set_strict_mode instead. (Andrii)
> - v1: https://lore.kernel.org/bpf/20220320060815.7716-2-laoar.shao@gmail.com/
>
> Yafang Shao (27):
> bpf: selftests: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK in
> xdping
> bpf: selftests: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK in
> xdpxceiver
> bpf: selftests: No need to include bpf_rlimit.h in test_tcpnotify_user
> bpf: selftests: No need to include bpf_rlimit.h in flow_dissector_load
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> get_cgroup_id_user
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> test_cgroup_storage
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> get_cgroup_id_user
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_lpm_map
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_lru_map
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> test_skb_cgroup_id_user
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_sock_addr
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_sock
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_sockmap
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_sysctl
> bpf: selftests: Set libbpf 1.0 API mode explicitly in test_tag
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> test_tcp_check_syncookie_user
> bpf: selftests: Set libbpf 1.0 API mode explicitly in
> test_verifier_log
> bpf: samples: Set libbpf 1.0 API mode explicitly in hbm
> bpf: selftests: Get rid of bpf_rlimit.h
> bpf: selftests: No need to include sys/resource.h in some files
> bpf: samples: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK in
> xdpsock_user
> bpf: samples: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK in
> xsk_fwd
> bpf: samples: No need to include sys/resource.h in many files
> bpf: bpftool: Remove useless return value of libbpf_set_strict_mode
> bpf: bpftool: Set LIBBPF_STRICT_AUTO_RLIMIT_MEMLOCK for legacy libbpf
> bpf: bpftool: remove RLIMIT_MEMLOCK
> bpf: runqslower: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK
>
Hey Yafang, thanks for the clean up! It looks good, but please make it
a bit more manageable in terms of number of patches. There is no need
to have so many tiny patches. Can you squash together all the
samples/bpf changes into one patch, all the selftests/bpf changes into
another, bpftool ones still can be just one patch. runqslower makes
sense to keep separate. Please also use customary subject prefixes for
those: "selftests/bpf: ", "bpftool: ", "samples/bpf: ". For runqslower
probably "tools/runqslower: " would be ok as well.
> samples/bpf/cpustat_user.c | 1 -
> samples/bpf/hbm.c | 5 ++--
> samples/bpf/ibumad_user.c | 1 -
> samples/bpf/map_perf_test_user.c | 1 -
> samples/bpf/offwaketime_user.c | 1 -
> samples/bpf/sockex2_user.c | 1 -
> samples/bpf/sockex3_user.c | 1 -
> samples/bpf/spintest_user.c | 1 -
> samples/bpf/syscall_tp_user.c | 1 -
> samples/bpf/task_fd_query_user.c | 1 -
> samples/bpf/test_lru_dist.c | 1 -
> samples/bpf/test_map_in_map_user.c | 1 -
> samples/bpf/test_overhead_user.c | 1 -
> samples/bpf/tracex2_user.c | 1 -
> samples/bpf/tracex3_user.c | 1 -
> samples/bpf/tracex4_user.c | 1 -
> samples/bpf/tracex5_user.c | 1 -
> samples/bpf/tracex6_user.c | 1 -
> samples/bpf/xdp1_user.c | 1 -
> samples/bpf/xdp_adjust_tail_user.c | 1 -
> samples/bpf/xdp_monitor_user.c | 1 -
> samples/bpf/xdp_redirect_cpu_user.c | 1 -
> samples/bpf/xdp_redirect_map_multi_user.c | 1 -
> samples/bpf/xdp_redirect_user.c | 1 -
> samples/bpf/xdp_router_ipv4_user.c | 1 -
> samples/bpf/xdp_rxq_info_user.c | 1 -
> samples/bpf/xdp_sample_pkts_user.c | 1 -
> samples/bpf/xdp_sample_user.c | 1 -
> samples/bpf/xdp_tx_iptunnel_user.c | 1 -
> samples/bpf/xdpsock_user.c | 9 ++----
> samples/bpf/xsk_fwd.c | 7 ++---
> tools/bpf/bpftool/common.c | 8 ------
> tools/bpf/bpftool/feature.c | 2 --
> tools/bpf/bpftool/main.c | 6 ++--
> tools/bpf/bpftool/main.h | 2 --
> tools/bpf/bpftool/map.c | 2 --
> tools/bpf/bpftool/pids.c | 1 -
> tools/bpf/bpftool/prog.c | 3 --
> tools/bpf/bpftool/struct_ops.c | 2 --
> tools/bpf/runqslower/runqslower.c | 18 ++----------
> tools/testing/selftests/bpf/bench.c | 1 -
> tools/testing/selftests/bpf/bpf_rlimit.h | 28 -------------------
> .../selftests/bpf/flow_dissector_load.c | 6 ++--
> .../selftests/bpf/get_cgroup_id_user.c | 4 ++-
> tools/testing/selftests/bpf/prog_tests/btf.c | 1 -
> .../selftests/bpf/test_cgroup_storage.c | 4 ++-
> tools/testing/selftests/bpf/test_dev_cgroup.c | 4 ++-
> tools/testing/selftests/bpf/test_lpm_map.c | 4 ++-
> tools/testing/selftests/bpf/test_lru_map.c | 4 ++-
> .../selftests/bpf/test_skb_cgroup_id_user.c | 4 ++-
> tools/testing/selftests/bpf/test_sock.c | 4 ++-
> tools/testing/selftests/bpf/test_sock_addr.c | 4 ++-
> tools/testing/selftests/bpf/test_sockmap.c | 5 ++--
> tools/testing/selftests/bpf/test_sysctl.c | 4 ++-
> tools/testing/selftests/bpf/test_tag.c | 4 ++-
> .../bpf/test_tcp_check_syncookie_user.c | 4 ++-
> .../selftests/bpf/test_tcpnotify_user.c | 1 -
> .../testing/selftests/bpf/test_verifier_log.c | 5 ++--
> .../selftests/bpf/xdp_redirect_multi.c | 1 -
> tools/testing/selftests/bpf/xdping.c | 8 ++----
> tools/testing/selftests/bpf/xdpxceiver.c | 6 ++--
> 61 files changed, 57 insertions(+), 142 deletions(-)
> delete mode 100644 tools/testing/selftests/bpf/bpf_rlimit.h
>
> --
> 2.17.1
>
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