2010.01.06
I just realized that I'm not doing includes right. My kernel code should use
the system include directory and my test file should use the user include
directory. I think I got off track by just copying the LKMPG guide Makefile
examples without thinking it through. The default include is the 
/usr/include and the (-i) option in the compile gives the system include
file. I think there's also a (-I). I need to check the difference. It
may be the order the two include directories are searched.

2010.01.06

  insmod ./mod-syscall-hello.o    insert the module
  lsmod                           see if the modules has loaded
  tail /var/log/syslog            see module load message
  ./mod-syscall-test-hello        run the syscall test program
  tail /var/log/syslog            see module enter call and leave message
  rmmod mod-syscall-hello         unload module
  lsmod                           see if the modules has unloaded
  tail /var/log/syslog            see module unload message. Read all the
                                    messages produced by this module.

2010.01.06
Ported to the Slackware 2.4 kernel. Fixed the Makefile.

2009.07.29
First version is a no-parameter, no-result system call; a simple call, printk,
and return. The only observable results are in /var/log/syslog if the module was
actually loaded.