dtrace_dynvar
dvar = dtrace_dynvar(dstate, 2, key,
dvar = dtrace_dynvar(dstate, 2, key,
dvar = dtrace_dynvar(dstate, nkeys, key,
dvar = dtrace_dynvar(dstate, nkeys, key,
struct dtrace_dynvar *dtdv_next; /* next on list or hash chain */