BPF_KPROBE_READ_RET_IP   33 samples/bpf/tracex2_kern.c 	BPF_KPROBE_READ_RET_IP(loc, ctx);
BPF_KPROBE_READ_RET_IP  503 tools/testing/selftests/bpf/bpf_helpers.h #define BPF_KRETPROBE_READ_RET_IP		BPF_KPROBE_READ_RET_IP
BPF_KPROBE_READ_RET_IP  506 tools/testing/selftests/bpf/bpf_helpers.h #define BPF_KRETPROBE_READ_RET_IP		BPF_KPROBE_READ_RET_IP