const golang.org/x/sys/unix.PerfBitPreciseIPBit2

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1108: 	PerfBitPreciseIPBit2                 = CBitFieldMaskBit16

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