const golang.org/x/sys/unix.BPF_PERF_EVENT_KRETPROBE

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2863: 	BPF_PERF_EVENT_KRETPROBE                   = 0x4

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)