fs/proc/array.c

File Facts

System

Linux kernel

Corpus path

fs/proc/array.c

Extension

.c

Size

23110 bytes

Lines

823

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/errno.h
• linux/hex.h
• linux/time.h
• linux/time_namespace.h
• linux/kernel.h
• linux/kernel_stat.h
• linux/tty.h
• linux/string.h
• linux/mman.h
• linux/sched/mm.h
• linux/sched/numa_balancing.h
• linux/sched/task_stack.h
• linux/sched/task.h
• linux/sched/cputime.h
• linux/proc_fs.h
• linux/ioport.h
• linux/io.h
• linux/mm.h
• linux/hugetlb.h
• linux/pagemap.h
• linux/swap.h
• linux/smp.h
• linux/signal.h
• linux/highmem.h
• linux/file.h
• linux/fdtable.h
• linux/times.h
• linux/cpuset.h
• linux/rcupdate.h
• linux/delayacct.h
• linux/seq_file.h

Detected Declarations

• function Copyright
• function task_state
• function render_sigset_t
• function collect_sigign_sigcatch
• function task_sig
• function render_cap_t
• function task_cap
• function task_seccomp
• function task_context_switch_counts
• function task_cpus_allowed
• function task_core_dumping
• function task_thp_status
• function task_untag_mask
• function arch_proc_pid_thread_features
• function do_task_stat
• function ptrace
• function scoped_guard
• function __for_each_thread
• function proc_tid_stat
• function proc_tgid_stat
• function proc_pid_statm
• function get_children_pid
• function children_seq_show
• function children_seq_stop
• function children_seq_open

Annotated Snippet

const struct file_operations proc_tid_children_operations = {
	.open    = children_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release,
};
#endif /* CONFIG_PROC_CHILDREN */

Annotation

• Immediate include surface: `linux/types.h`, `linux/errno.h`, `linux/hex.h`, `linux/time.h`, `linux/time_namespace.h`, `linux/kernel.h`, `linux/kernel_stat.h`, `linux/tty.h`.
• Detected declarations: `function Copyright`, `function task_state`, `function render_sigset_t`, `function collect_sigign_sigcatch`, `function task_sig`, `function render_cap_t`, `function task_cap`, `function task_seccomp`, `function task_context_switch_counts`, `function task_cpus_allowed`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.