Allocating Memory:
	malloc and free
	calloc
	Don't forget to deallocate!
	Arrays vs. Python lists, and realloc
		- Userspace:  C++ vector
		- Kernel:  Kernel linked lists, or figure out size in advance

goto:
	Let's make a loop without for or while
	Actually used a lot in the kernel, but not for loops
	Example:  How often?
	Considered harmful
		- Which is harmful

Pointers to functions:
	CS253 reminder:  We used these with pthreads, and probably other places
	Now we will do things that are more silly!
		An array of pointers to word-scrambling functions
		A function that takes a list of functions to apply to a word
		A function that returns a function?  get_scrambler
	Ok, that was silly, but how about something that actually happens?

Structs with function pointers:
	Kind of like an object
	We will actually have to make these when we put files in /proc
	Project 1:  Make one and hand it to the test function
	An example that was in 253:  sigaction
		We'll make a program that handles ctrl+c again

How this is used:
	We've been using file_operations as an example, because we'll use it later
	It's a fairly typical use.

Bitwise arithmatic refresher:
	and and or are the most common
	logical vs. bitwise operators
	Turning a single bit on or off
	Use hex for constants, to keep your head screwed on straight
	
C macros, #define, and the oddness that can result
	Text substitution before the program is compiled
	Can redefine normal words
	If using it for formulas, use parenthesis to keep out of trouble
	Lots of macros are used in the kernel!

Now project 1 should (hopefully) make sense!
	One thing people ask about:  The array of functions
		Generated using a macro
		Let's go over it, and the rest of the project too
	The last problem is the easiest
 
Resources:
	A guide to GDB:   http://beej.us/guide/bggdb/
	Make (Wikipedia): http://en.wikipedia.org/wiki/Make_(software)
	Pointer arithmatic overview:  http://www.cs.umd.edu/class/sum2003/cmsc311/Notes/BitOp/pointer.html
	Pointers (Wikipedia): http://en.wikipedia.org/wiki/Pointer_(computer_programming)