confusion about kse_create()

Hi,

After reading the MAN page and source codes for KSE, I find some parts 
contradicting. Maybe the MAN page is out-dated. But I want to confirm this.

First confusion:

In KSE MAN:
----------------------------
...
    To become multi-threaded, a process must first invoke kse_create().  The
    kse_create() system call creates a new KSE (except for the very first
    invocation; see below).
...
----------------------------

But in src/sys/sys/kern_thread.c:
----------------------------
                while (newkg->kg_kses < ncpus) {
                        newke = kse_alloc();
                        bzero(&newke->ke_startzero, RANGEOF(struct kse,
                              ke_startzero, ke_endzero));
#if 0
                        mtx_lock_spin(&sched_lock);
                        bcopy(&ke->ke_startcopy, &newke->ke_startcopy,
                              RANGEOF(struct kse, ke_startcopy, 
ke_endcopy));
                        mtx_unlock_spin(&sched_lock);
#endif
                        mtx_lock_spin(&sched_lock);
                        kse_link(newke, newkg);
                        sched_fork_kse(td->td_kse, newke);
                        /* Add engine */
                        kse_reassign(newke);
                        mtx_unlock_spin(&sched_lock);
                }
--------------------------
So, apparently, with one invokation of kse_create(), new KSEs are created
so that the number of total KSEs equals the number CPUs.


Second confusion:

In KSE MAN:
-----------
     as a special case, the first call to kse_create() by this initial 
thread
     with newgroup equal to zero does not create a new KSE; instead, it 
simply
     associates the current KSE with the supplied KSE mailbox, and no 
immedi-
     ate upcall results.  However, an upcall will be triggered the next time
     the thread blocks and the required conditions are met.
-----------

In the source codes for kse_create(), I cannot find the corresponding lines.

What am I missing here?
Thanks so much in advance!

-- Bin