arch/s390/appldata/appldata_os.c

File Facts

System

Linux kernel

Corpus path

arch/s390/appldata/appldata_os.c

Extension

.c

Size

5870 bytes

Lines

211

Domain

Architecture Layer

Bucket

arch/s390

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/module.h
• linux/init.h
• linux/slab.h
• linux/errno.h
• linux/kernel_stat.h
• linux/netdevice.h
• linux/sched.h
• linux/sched/loadavg.h
• linux/sched/stat.h
• asm/appldata.h
• asm/smp.h
• appldata.h

Detected Declarations

• struct appldata_os_per_cpu
• struct appldata_os_data
• function appldata_get_os_data
• function appldata_os_init
• function appldata_os_exit
• module init appldata_os_init

Annotated Snippet

module_init(appldata_os_init);
module_exit(appldata_os_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gerald Schaefer");
MODULE_DESCRIPTION("Linux-VM Monitor Stream, OS statistics");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/slab.h`, `linux/errno.h`, `linux/kernel_stat.h`, `linux/netdevice.h`, `linux/sched.h`, `linux/sched/loadavg.h`.
• Detected declarations: `struct appldata_os_per_cpu`, `struct appldata_os_data`, `function appldata_get_os_data`, `function appldata_os_init`, `function appldata_os_exit`, `module init appldata_os_init`.
• Atlas domain: Architecture Layer / arch/s390.
• 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.