kthread/kproc diff 2

newest version..

this version has been tested somewhat, and adds a new function.
the new function, when given a pointer to a pointer to a proc, will
make a new kproc when the proc * is NULL (i.e. the first time it is called)
and fill it in, and therafter, add new kthreads to that process.

it has a rather clumsy name of kproc_kthread_create, so if you don't
like it sugeest something better.. it uses kproc_create and kthread_create.

after applying this patch top -SH shows the following:

last pid: 35036;  load averages:  0.24,  0.05,  0.09    up 0+08:15:52  
23:04:13
85 processes:  5 running, 62 sleeping, 18 waiting
CPU states:  0.1% user,  0.0% nice,  0.0% system,  0.0% interrupt, 99.9% 
idle
Mem: 39M Active, 792M Inact, 138M Wired, 1060K Cache, 112M Buf, 2038M Free
Swap: 6144M Total, 6144M Free

  PID USERNAME PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   10 root     171 ki31     0K    32K CPU3   3  30.3H 98.97% {idle: cpu3}
   10 root     171 ki31     0K    32K CPU2   2  30.3H 98.97% {idle: cpu2}
   10 root     171 ki31     0K    32K CPU0   0  30.3H 98.58% {idle: cpu0}
   10 root     171 ki31     0K    32K RUN    1  30.3H 98.14% {idle: cpu1}
   25 root      20    -     0K     8K syncer 2   2:12  0.73% syncer
   11 root     -32    -     0K   136K WAIT   0  15:55  0.54% {swi4: 
clock sio}
   11 root     -24    -     0K   136K WAIT   0  15:55  0.00% {swi6: 
Giant task}
   11 root     -24    -     0K   136K WAIT   1  15:55  0.00% {swi6: task 
queue}
   11 root     -28    -     0K   136K WAIT   2  15:55  0.00% {swi5: +}
   11 root     -36    -     0K   136K WAIT   0  15:55  0.00% {swi3: vm}
   11 root     -40    -     0K   136K WAIT   0  15:55  0.00% {swi2: cambio}
   11 root     -44    -     0K   136K WAIT   0  15:55  0.00% {swi1: net}
   11 root     -48    -     0K   136K WAIT   0  15:55  0.00% {swi0: uart 
sio}
   11 root     -52    -     0K   136K WAIT   0  15:55  0.00% {irq9: acpi0}
   11 root     -60    -     0K   136K WAIT   0  15:55  0.00% {irq12: psm0}
   11 root     -60    -     0K   136K WAIT   0  15:55  0.00% {irq1: atkbd0}
   11 root     -64    -     0K   136K WAIT   0  15:55  0.00% {irq5: ohci0}
   11 root     -64    -     0K   136K WAIT   0  15:55  0.00% {irq15: ata1}
   11 root     -64    -     0K   136K WAIT   0  15:55  0.00% {irq14: ata0}
   11 root     -68    -     0K   136K WAIT   0  15:55  0.00% {irq28: bge0}
   11 root     -68    -     0K   136K WAIT   0  15:55  0.00% {irq20: fxp0}
   11 root     -68    -     0K   136K WAIT   0  15:55  0.00% {irq29: bge1}
   19 root     -68    -     0K     8K -      2   4:56  0.00% dummynet
   12 root     -16    -     0K     8K -      1   0:16  0.00% yarrow
    2 root      -8    -     0K     8K -      2   0:06  0.00% g_event
    3 root      -8    -     0K     8K -      2   0:05  0.00% g_up
[etc]


top -S just shows:

last pid: 35040;  load averages:  0.09,  0.04,  0.08    up 0+08:16:48  
23:05:09
85 processes:  5 running, 62 sleeping, 18 waiting
CPU states:  0.1% user,  0.0% nice,  0.0% system,  0.0% interrupt, 99.9% 
idle
Mem: 39M Active, 792M Inact, 138M Wired, 1060K Cache, 112M Buf, 2038M Free
Swap: 6144M Total, 6144M Free

  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   10 root        4 171 ki31     0K    32K CPU0   0  30.3H 396.09% idled
   11 root       17 -60    -     0K   136K WAIT   0  15:56  0.00% interd
   19 root        1 -68    -     0K     8K -      2   4:56  0.00% dummynet
   25 root        1  20    -     0K     8K syncer 1   2:12  0.00% syncer
[etc]

other current kprocs can be turned into kthreads with minimal
(usually a few seconds) edits

note kthread_create() has grown an extra argument, a struct proc *
that is used to tell it which kproc to add the thread to.


comments?
code-reviews?

   ps -auxH -Otdnam gives output different from what I'd expect
and strange messages appear on the console. so comments on that
(the ps diffs) are definitly requested.