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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1205: 	PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT   = 0xb

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