RB_INITIALIZER
static struct pidtree pids = RB_INITIALIZER(&pids);
static struct idname_tree user_idname = RB_INITIALIZER(&user_idname);
static struct idname_tree group_idname = RB_INITIALIZER(&group_idname);
struct dg_fd_list dg_fd_head = RB_INITIALIZER(&dg_fd_head);
struct vc_fd_list vc_fd_head = RB_INITIALIZER(&vc_fd_head);
struct sysctl_oid_list sysctl__children = RB_INITIALIZER(&sysctl__children);
RB_HEAD(stacktree, stackentry) epoch_stacks = RB_INITIALIZER(&epoch_stacks);
.oid_children = RB_INITIALIZER(&id.oid_children), \
RB_INITIALIZER(&vm_phys_fictitious_tree);
static struct inodetree v1 = RB_INITIALIZER(&v1);
static struct inodetree v2 = RB_INITIALIZER(&v2);
static RB_HEAD(socks_t, sock) socks = RB_INITIALIZER(&socks);
static RB_HEAD(pcbs_t, sock) pcbs = RB_INITIALIZER(&pcbs);
static RB_HEAD(files_t, file) ftree = RB_INITIALIZER(&ftree);
acpi_vcpu_affinity_entry) aff_head = RB_INITIALIZER(&aff_head);
static struct cert_tree trusted = RB_INITIALIZER(&trusted);
static struct cert_tree untrusted = RB_INITIALIZER(&untrusted);
struct file_tree files = RB_INITIALIZER(&files);
struct cert_tree extra = RB_INITIALIZER(&extra);