L

lapses of time, measurement of, Measuring Time Lapses–Processor-Specific Registers

laptop docking stations, Laptop docking stations

large buffers, obtaining, Obtaining Large Buffers, Quick Reference

large file implementations (/proc files), The seq_file interface

layers, The Kernel Symbol Table, The Generic DMA Layer

generic DMA, The Generic DMA Layer

modularization, The Kernel Symbol Table

lddbus driver, Bus methods

ldd_driver structure, Driver structure embedding

LEDs, soldering to output pins, A Sample Driver

levels, User Space and Kernel Space, Turning the Messages On and Off, Turning the Messages On and Off

CPU (modalities), User Space and Kernel Space

debugging, Turning the Messages On and Off, Turning the Messages On and Off

libraries, Kernel Modules Versus Applications

license terms, License Terms

lifecycles, USB Urbs, The Linux Device Model, Putting It All Together–Remove a Driver

Linux device model, Putting It All Together–Remove a Driver

objects, The Linux Device Model

urbs, USB Urbs

limitations of debug messages (prink function), Rate Limiting

line settings (tty drivers), TTY Line Settings

line status register (LSR), ioctls

link state (changes in), Changes in Link State

linked lists, Linked Lists

traversal of, Linked Lists

linking libraries, Kernel Modules Versus Applications

links (symbolic), Symbolic Links

Linux, Version Numbering, License Terms

license terms, License Terms

version numbering, Version Numbering

Linux device model, The Linux Device Model–The Linux Device Model, Kobjects, Ksets, and Subsystems–Subsystems, Low-Level Sysfs Operations–Symbolic Links, Hotplug Event Generation, Buses–Bus attributes, Devices–Driver structure embedding, Classes–Class interfaces, Putting It All Together–Remove a Driver, Hotplug–udev, Dealing with Firmware–How It Works

buses, Buses–Bus attributes

classes, Classes–Class interfaces

devices, Devices–Driver structure embedding

firmware, Dealing with Firmware–How It Works

hotplugging, Hotplug–udev

kobjects, Kobjects, Ksets, and Subsystems–Subsystems, Low-Level Sysfs Operations–Symbolic Links, Hotplug Event Generation

hotplug events, Hotplug Event Generation

low-level sysfs operations, Low-Level Sysfs Operations–Symbolic Links

lifecycles, Putting It All Together–Remove a Driver

Linux Trace Toolkit (LTT), The Linux Trace Toolkit

linux-kernel mailing list, Joining the Kernel Development Community, Linked Lists

LINUX_VERSION_CODE macro, Version Dependency, Version Dependency, Quick Reference

list.h header file, Linked Lists

lists (PCI), Quick Reference

list_add function, Linked Lists

list_add_tail function, Linked Lists

list_del function, Linked Lists

list_empty function, Linked Lists

list_entry macro, Linked Lists

list_for_each macro, Linked Lists

list_head data structure, Linked Lists

list_move function, Linked Lists

list_splice function, Linked Lists

little-endian byte order, Byte Order

llseek method, File Operations, File Operations, Seeking a Device

loadable modules, Loadable Modules

loading, Loading and Unloading Modules–Platform Dependency, Module-Loading Races, Module Parameters–Module Parameters, Dynamic Allocation of Major Numbers, Dynamic Allocation of Major Numbers, How It Works

attribute (firmware), How It Works

drivers, Dynamic Allocation of Major Numbers

modules, Loading and Unloading Modules–Platform Dependency, Module-Loading Races, Module Parameters–Module Parameters, Dynamic Allocation of Major Numbers

dynamically assigned device numbers, Dynamic Allocation of Major Numbers

parameters, Module Parameters–Module Parameters

races, Module-Loading Races

local0 (IP number), Assigning IP Numbers

LocalTalk devices, setting up fields for, Interface Information

lock method, File Operations, File Operations

lock-free algorithms, Lock-Free Algorithms

locked keyboard (debugging), System Hangs

locking, Concurrency and Its Management, Semaphores and Mutexes, Locking Traps–Fine- Versus Coarse-Grained Locking, Lock Ordering Rules, Alternatives to Locking–Read-Copy-Update, Atomic Variables, seqlocks

adding, Semaphores and Mutexes

alternatives to, Alternatives to Locking–Read-Copy-Update

atomic variables, Atomic Variables

rules for, Lock Ordering Rules

seqlocks, seqlocks

traps, Locking Traps–Fine- Versus Coarse-Grained Locking

lockmeter tool, Fine- Versus Coarse-Grained Locking

loff_t (long offset), File Operations, The file Structure

loff_t f_pos (struct file field), The file Structure

logging messages (printk function), How Messages Get Logged

logical addresses, Address Types

logical units (USB), Configurations

login process, Access Control on a Device File

loglevels, The Hello World Module, printk

message priorities, The Hello World Module

LOG_BUF_LEN circular buffer, How Messages Get Logged

long data type, Use of Standard C Types

long delays (of code execution), Long Delays

lookaside caches, Lookaside Caches–The alloc_pages Interface, Quick Reference

loopback interfaces, How snull Is Designed

loops, System Hangs, Busy waiting, Short Delays

busy, Busy waiting

endless, System Hangs

software, Short Delays

loops_per_jiffy value, Short Delays

low memory, High and Low Memory

low-level sysfs operations, Low-Level Sysfs Operations–Symbolic Links

ls command, identifying device type, Major and Minor Numbers

LSR (line status register), ioctls

ltalk_setup, Interface Information

ltalk_setup function, Interface Information

LTT (Linux Trace Toolkit), The Linux Trace Toolkit