Linux kernel sources: Interesting functions and structs

Functions

`copy_from_user()`, `copy_to_user()`	Safely copy data between kernel and user space.	`arch/x86/include/asm/uaccess.h`
`ctrl_alt_del`	Called when ctrl+alt+delete are pressed.	`kernel/reboot.c`
`do_page_fault()`	Handles page faults in the memory management subsystem.
`interrupt_handler()`	Generic name for functions that handle hardware interrupts.
`kfree()`	Frees kernel memory allocated by kmalloc().	`include/linux/slab.h`
`kmalloc()`	Allocates kernel memory.
`kernel_halt`	Shutdown everything and perform a clean system halt.	`kernel/reboot.c`
`kthread_create()`	Creates a new kernel thread.
`list_add`	Doubly linked lists	`include/linux/list.h`
`printk()`	Kernel's version of `printf()` for logging messages.	`kernel/printk/printk.c`
`schedule()`	The core scheduling function that decides which process to run next.	`kernel/sched/core.c`
`spin_lock()`, `spin_unlock()`	Low-level synchronization primitives.	`include/linux/spinlock.h`
`sys_call_table[]`	Array of function pointers to system call handlers.

	Representaion or description of
`block_device`	a block device in the kernel.
`file`	an open file in the kernel.
`file_operations`	operations that can be performed on a file (used in implementing filesystems and device drivers)	`include/linux/fs.h`
`mm_struct`	the virtual memory of a task.
`module`	a loadable kernel module.
`net_device`	a network interface.
`sk_buff`	a network packet.	`include/linux/skbuff.h`
`task_struct`	a process or thread in the kernel.	`include/linux/sched.h`

`drivers/tty/vt/vt.c`	A hopefully rater complete VT102 implementation
`kernel/fork.c`	Contains the help-routines for the `fork` system call.
`kernel/sched/*`, `kernel/sched/sched.h`	CFS (completely fair scheduler) and related task structures