scripts/mksysmap

File Facts

System

Linux kernel

Corpus path

scripts/mksysmap

Extension

[no extension]

Size

2164 bytes

Lines

95

Domain

Support Tooling And Documentation

Bucket

scripts

Inferred role

Support Tooling And Documentation: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#!/bin/sed -f
# SPDX-License-Identifier: GPL-2.0-only
#
# sed script to filter out symbols that are not needed for System.map,
# or not suitable for kallsyms. The input should be 'nm -n <file>'.
#
# System.map is used by module-init tools and some debugging
# tools to retrieve the actual addresses of symbols in the kernel.
#
# readprofile starts reading symbols when _stext is found, and
# continue until it finds a symbol which is not either of 'T', 't',
# 'W' or 'w'.
#
# ---------------------------------------------------------------------------
# Ignored symbol types
#

# a: local absolute symbols
# N: debugging symbols
# U: undefined global symbols
# w: local weak symbols
/ [aNUw] /d

# ---------------------------------------------------------------------------
# Ignored prefixes
#  (do not forget a space before each pattern)

# local symbols for ARM, MIPS, etc.
/ \$/d

# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
/ \.L/d

# arm64 EFI stub namespace
/ __efistub_/d

# arm64 local symbols in PIE namespace
/ __pi_\\$/d
/ __pi_\.L/d

# arm64 local symbols in non-VHE KVM namespace
/ __kvm_nvhe_\$/d
/ __kvm_nvhe_\.L/d

# lld arm/aarch64/mips thunks
/ __[[:alnum:]]*Thunk_/d

# CFI type identifiers
/ __kcfi_typeid_/d
/ __kvm_nvhe___kcfi_typeid_/d
/ __pi___kcfi_typeid_/d

# CRC from modversions
/ __crc_/d

# EXPORT_SYMBOL (symbol name)
/ __kstrtab_/d

# EXPORT_SYMBOL (namespace)
/ __kstrtabns_/d

# MODULE_DEVICE_TABLE (symbol name)
/ __mod_device_table__/d

# ---------------------------------------------------------------------------
# Ignored suffixes
#  (do not forget '$' after each pattern)

# arm
/_from_arm$/d

Annotation

• Atlas domain: Support Tooling And Documentation / scripts.
• Implementation status: integration implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.