This set introduces BPF_F_SHARE_PE to perf event array for better sharing of perf event. By default, perf event array removes the perf event when the map fd used to add the event is closed. With BPF_F_SHARE_PE set, however, the perf event will stay in the array until it is removed, or the map is closed.
Song Liu (2): bpf: introduce BPF_F_SHARE_PE for perf event array selftests/bpf: add tests for BPF_F_SHARE_PE include/uapi/linux/bpf.h | 3 + kernel/bpf/arraymap.c | 31 ++++++++- tools/include/uapi/linux/bpf.h | 3 + .../bpf/prog_tests/perf_event_share.c | 68 +++++++++++++++++++ .../bpf/progs/test_perf_event_share.c | 44 ++++++++++++ 5 files changed, 147 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/perf_event_share.c create mode 100644 tools/testing/selftests/bpf/progs/test_perf_event_share.c -- 2.24.1
