This set enables BPF_PROG_TEST_RUN for raw_tracepoint type programs. This set also enables running the raw_tp program on a specific CPU. This feature can be used by user space to trigger programs that access percpu resources, e.g. perf_event, percpu variables. --- Changes v5 => v6: 1. Optimize the selftest. (John, Andrii) Changes v4 => v5: 1.Fail test_run with non-zero test.cpu but no BPF_F_TEST_RUN_ON_CPU. (Andrii) 2. Add extra check for invalid test.cpu value. (Andrii) 3. Shuffle bpf_test_run_opts to remove holes. (Andrii) 4. Fixes in selftests. (Andrii) Changes v3 => v4: 1. Use cpu+flags instead of cpu_plus. (Andrii) 2. Rework libbpf support. (Andrii) Changes v2 => v3: 1. Fix memory leak in the selftest. (Andrii) 2. Use __u64 instead of unsigned long long. (Andrii) Changes v1 => v2: 1. More checks for retval in the selftest. (John) 2. Remove unnecessary goto in bpf_prog_test_run_raw_tp. (John) Song Liu (3): bpf: enable BPF_PROG_TEST_RUN for raw_tracepoint libbpf: support test run of raw tracepoint programs selftests/bpf: add raw_tp_test_run include/linux/bpf.h | 3 + include/uapi/linux/bpf.h | 7 ++ kernel/bpf/syscall.c | 2 +- kernel/trace/bpf_trace.c | 1 + net/bpf/test_run.c | 91 ++++++++++++++++++ tools/include/uapi/linux/bpf.h | 7 ++ tools/lib/bpf/bpf.c | 31 ++++++ tools/lib/bpf/bpf.h | 26 +++++ tools/lib/bpf/libbpf.map | 1 + tools/lib/bpf/libbpf_internal.h | 5 + .../bpf/prog_tests/raw_tp_test_run.c | 96 +++++++++++++++++++ .../bpf/progs/test_raw_tp_test_run.c | 24 +++++ 12 files changed, 293 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/raw_tp_test_run.c create mode 100644 tools/testing/selftests/bpf/progs/test_raw_tp_test_run.c -- 2.24.1
