arch/powerpc/mm/ptdump/hashpagetable.c
Source file repositories/reference/linux-study-clean/arch/powerpc/mm/ptdump/hashpagetable.c
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/mm/ptdump/hashpagetable.c- Extension
.c- Size
- 13234 bytes
- Lines
- 550
- 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/io.hlinux/mm.hlinux/sched.hlinux/seq_file.hlinux/const.hasm/page.hasm/plpar_wrappers.hlinux/memblock.hasm/firmware.hasm/pgalloc.h
Detected Declarations
struct pg_statestruct addr_markerstruct flag_infofunction calculate_pagesizefunction dump_flag_infofunction dump_hpte_infofunction native_findfunction pseries_findfunction decode_rfunction base_hpte_findfunction hpte_findfunction walk_ptefunction walk_pmdfunction walk_pudfunction walk_p4dfunction walk_pagetablesfunction walk_linearmappingfunction walk_vmemmapfunction populate_markersfunction ptdump_showfunction ptdump_initmodule init ptdump_init
Annotated Snippet
device_initcall(ptdump_init);Annotation
- Immediate include surface: `linux/debugfs.h`, `linux/fs.h`, `linux/io.h`, `linux/mm.h`, `linux/sched.h`, `linux/seq_file.h`, `linux/const.h`, `asm/page.h`.
- Detected declarations: `struct pg_state`, `struct addr_marker`, `struct flag_info`, `function calculate_pagesize`, `function dump_flag_info`, `function dump_hpte_info`, `function native_find`, `function pseries_find`, `function decode_r`, `function base_hpte_find`.
- 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.