tools/bpf: add a bpf selftest for stacktrace

2018-01-06T22:52:23Z

Added a bpf selftest in test_progs at tools directory for stacktrace. The test will populate a hashtable map and a stacktrace map at the same time with the same key, stackid. The user space will compare both maps, using BPF_MAP_LOOKUP_ELEM command and BPF_MAP_GET_NEXT_KEY command, to ensure that both have the same set of keys. Signed-off-by: Yonghong Song Signed-off-by: Daniel Borkmann

kernel/tools/testing/selftests/bpf/test_stacktrace_map.c, branch linux-4.16.y

tools/bpf: add a bpf selftest for stacktrace