arch/powerpc/mm/numa.c

File Facts

System

Linux kernel

Corpus path

arch/powerpc/mm/numa.c

Extension

.c

Size

36533 bytes

Lines

1466

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/threads.h
• linux/memblock.h
• linux/init.h
• linux/mm.h
• linux/mmzone.h
• linux/export.h
• linux/nodemask.h
• linux/cpu.h
• linux/notifier.h
• linux/of.h
• linux/of_address.h
• linux/pfn.h
• linux/cpuset.h
• linux/node.h
• linux/stop_machine.h
• linux/proc_fs.h
• linux/seq_file.h
• linux/uaccess.h
• linux/slab.h
• asm/cputhreads.h
• asm/sparsemem.h
• asm/smp.h
• asm/topology.h
• asm/firmware.h
• asm/paca.h
• asm/hvcall.h
• asm/setup.h
• asm/vdso.h
• asm/vphn.h
• asm/drmem.h

Detected Declarations

• struct assoc_arrays
• function setup_node_to_cpumask_map
• function fake_numa_create_new_node
• function reset_numa_cpu_lookup_table
• function map_cpu_to_node
• function unmap_cpu_from_node
• function __associativity_to_nid
• function associativity_to_nid
• function __cpu_form2_relative_distance
• function __cpu_form1_relative_distance
• function cpu_relative_distance
• function __node_distance
• function of_node_to_nid_single
• function of_node_to_nid
• function __initialize_form1_numa_distance
• function initialize_form1_numa_distance
• function update_numa_distance
• function initialize_form2_numa_distance_lookup_table
• function find_primary_domain_index
• function get_n_mem_cells
• function read_n_cells
• function of_get_assoc_arrays
• function get_nid_and_numa_distance
• function of_node_to_nid_single
• function __vphn_get_associativity
• function smp_setup_cpu_maps
• function vphn_get_nid
• function __vphn_get_associativity
• function vphn_get_nid
• function numa_setup_cpu
• function verify_cpu_node_mapping
• function ppc_numa_cpu_prepare
• function ppc_numa_cpu_dead
• function numa_enforce_memory_limit
• function read_usm_ranges
• function numa_setup_drmem_lmb
• function parse_numa_properties
• function for_each_node_by_type
• function for_each_node_by_name
• function setup_nonnuma
• function for_each_mem_pfn_range
• function dump_numa_cpu_topology
• function for_each_online_node
• function setup_node_data
• function find_possible_nodes
• function mem_topology_setup
• function for_each_possible_cpu
• function initmem_init

Annotated Snippet

device_initcall(topology_update_init);
#endif /* CONFIG_PPC_SPLPAR */

Annotation

• Immediate include surface: `linux/threads.h`, `linux/memblock.h`, `linux/init.h`, `linux/mm.h`, `linux/mmzone.h`, `linux/export.h`, `linux/nodemask.h`, `linux/cpu.h`.
• Detected declarations: `struct assoc_arrays`, `function setup_node_to_cpumask_map`, `function fake_numa_create_new_node`, `function reset_numa_cpu_lookup_table`, `function map_cpu_to_node`, `function unmap_cpu_from_node`, `function __associativity_to_nid`, `function associativity_to_nid`, `function __cpu_form2_relative_distance`, `function __cpu_form1_relative_distance`.
• 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.