Here is a list of all modules:

"Statistic Types"	These are the statistics that are used in the simulator
A set of constants and structs from the VNC spec
KVM Interrupt handling.	These methods control interrupt delivery to the guest system
KVM low-level ioctl interface.	These methods provide a low-level interface to the underlying KVM layer
Struct for storing information before an	Instruction reaches the commit stage, e.g. execute timestamp
Struct for a record in the instruction dependency	Trace. All information required to process and calculate the computational delay is stored in TraceInfo objects. The memory request fields for a load or store instruction are also included here. Note that the structure TraceInfo does not store pointers to children or parents. The dependency trace is maintained as an ordered collection of records for writing to the output trace and not as a tree data structure
Runtime Notifications
Common Definitions
Initialization and Shut Down
System and Agent Information
Signals
Memory
Queues
Architected Queuing Language
Instruction Set Architecture.
Executable
Code Objects (deprecated).
The Drain API.	These methods relate to the "Drainable" interface
The Serialize API.	These methods related to the "Serialize" interface
The Event Queue API.	These methods relate to the event queue interface
The Stats API.	These methods relate to the statistics I/O interface
The SimObject API.	These methods relate to the SimObject interface
The AddrRange API.	These methods relate to the AddrRange and AddrRangeMap interfaces
The AtomicOpFunctor API.	These methods relate to the AtomicOpFunctor and the related interfaces
The bit manipulating API.	These are a collection of methods for bit manipulations
The BitUnion API.	These are a collection of methods and macros of the BitUnion system of defining bitfields on top of an underlying class
The utility functions and constants API.	These are a collection of utility functions and constants defined in src/base
The CallbackQueue API.	These methods relate to the CallbackQueue interface
The ChannelAddr and ChannelAddrRange API.	These methods relate to the interface of ChannelAddr and ChannelAddrRange
The ChunkGenerator API.	These methods relate to the ChunkGenerator interface
The Coroutine API.	These methods relate to the Coroutine interface
The Fiber API.	These methods relate to the Fiber interface
The Flags API.	These methods relate to the Flags interface
The inet API.	These methods relate to EthAddr, IpAddress, TCP, UDP interfaces
The Logger API.	These methods and macros provide access to gem5's logging system
The PollEvent API.	These methods relate to the PollEvent interface
The PollQueue API.	These methods relate to the PollQueue interface
The RemoteGDB API.	These methods relate to the BaseRemoteGDB and BaseGdbRegCache interfaces
The SatCounter API.	These methods relate to the SatCounter interface
The Socket API.	These methods relate to the Socket interface
The C++ STL helpers API.	These are methods providing additional functionality to C++ STL
The Trace API.	These methods relate to the selective debugging trace facility
Fully Associative LRU specific statistics	The FA lru stack lets us track multiple cache sizes at once. These statistics track the hits and misses for different cache sizes
Data	If this instruction wrote any data values they're recorded here WARNING: Instructions are quite loose with with what they write since many instructions write multiple values (e.g. destintation register, flags, status, ...) This only captures the last write. @TODO fix this and record all destintations that an instruction writes
Fetch_seq	This records the serial number that the instruction was fetched in
Commit_seq	This records the instruction number that was committed in the pipeline