net/Kconfig.debug

Source file repositories/reference/linux-study-clean/net/Kconfig.debug

File Facts

System
Linux kernel
Corpus path
net/Kconfig.debug
Extension
.debug
Size
1286 bytes
Lines
42
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: Sockets, Protocols, Packet Path, And Network Policy
Status
atlas-only

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only

config NET_DEV_REFCNT_TRACKER
	bool "Enable net device refcount tracking"
	depends on DEBUG_KERNEL && STACKTRACE_SUPPORT && NET
	select REF_TRACKER
	default n
	help
	  Enable debugging feature to track device references.
	  This adds memory and cpu costs.

config NET_NS_REFCNT_TRACKER
	bool "Enable networking namespace refcount tracking"
	depends on DEBUG_KERNEL && STACKTRACE_SUPPORT && NET
	select REF_TRACKER
	default n
	help
	  Enable debugging feature to track netns references.
	  This adds memory and cpu costs.

config DEBUG_NET
	bool "Add generic networking debug"
	depends on DEBUG_KERNEL && NET
	help
	  Enable extra sanity checks in networking.
	  This is mostly used by fuzzers, but is safe to select.

config DEBUG_NET_SMALL_RTNL
	bool "Add extra per-netns mutex inside RTNL"
	depends on DEBUG_KERNEL && NET && LOCK_DEBUGGING_SUPPORT
	select PROVE_LOCKING
	default n
	help
	  rtnl_lock() is being replaced with rtnl_net_lock() that
	  acquires the global RTNL and a small per-netns RTNL mutex.

	  During the conversion, rtnl_net_lock() just adds an extra
	  mutex in every RTNL scope and slows down the operations.

	  Once the conversion completes, rtnl_lock() will be removed
	  and rtnetlink will gain per-netns scalability.

Annotation

Implementation Notes