arch/powerpc/mm/ptdump/ptdump.c
Source file repositories/reference/linux-study-clean/arch/powerpc/mm/ptdump/ptdump.c
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/mm/ptdump/ptdump.c- Extension
.c- Size
- 11022 bytes
- Lines
- 426
- Domain
- Architecture Layer
- Bucket
- arch/powerpc
- Inferred role
- Architecture Layer: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Allocates kernel memory; connect allocation flags and lifetime to context constraints.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/debugfs.hlinux/fs.hlinux/hugetlb.hlinux/io.hlinux/mm.hlinux/highmem.hlinux/ptdump.hlinux/sched.hlinux/seq_file.hasm/fixmap.hlinux/const.hlinux/kasan.hasm/page.hasm/hugetlb.hmm/mmu_decl.hptdump.h
Detected Declarations
struct pg_statestruct addr_markerfunction pt_dump_sizefunction dump_flag_infofunction dump_addrfunction note_prot_wxfunction note_page_update_statefunction note_pagefunction populate_markersfunction note_page_ptefunction note_page_pmdfunction note_page_pudfunction note_page_p4dfunction note_page_pgdfunction note_page_flushfunction ptdump_showfunction build_pgtable_complete_maskfunction ptdump_check_wxfunction ptdump_initmodule init ptdump_init
Annotated Snippet
device_initcall(ptdump_init);Annotation
- Immediate include surface: `linux/debugfs.h`, `linux/fs.h`, `linux/hugetlb.h`, `linux/io.h`, `linux/mm.h`, `linux/highmem.h`, `linux/ptdump.h`, `linux/sched.h`.
- Detected declarations: `struct pg_state`, `struct addr_marker`, `function pt_dump_size`, `function dump_flag_info`, `function dump_addr`, `function note_prot_wx`, `function note_page_update_state`, `function note_page`, `function populate_markers`, `function note_page_pte`.
- Atlas domain: Architecture Layer / arch/powerpc.
- 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.