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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1225: 	PERF_SAMPLE_BRANCH_COND               = 0x400

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