test:Fix the test_libbcc/test_libbcc_no_libbpf testcase failure when the kernel version is lower than 4.20 #3257
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The BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE type is only supported in the version of the kernel >=4.20, causing the bpf_init function failed on the low kernel version.
test/cc/test_cg_storage.cc
TEST_CASE("test percpu cgroup storage", "[percpu_cgroup_storage]") { { const std::string BPF_PROGRAM = R"( BPF_PERCPU_CGROUP_STORAGE(cg_storage1, long long); BPF_PERCPU_CGROUP_STORAGE(cg_storage2, long long); int test(struct bpf_sock_ops *skops)
after modify, the test case can be executed successfully :
3/43 Test #3: test_libbcc ...................... Passed 18.58 sec
Start 4: test_libbcc_no_libbpf
4/43 Test #4: test_libbcc_no_libbpf ............ Passed 18.46 sec
Start 5: py_test_stat1_b