arch/mips/kernel/rtlx.c

File Facts

System

Linux kernel

Corpus path

arch/mips/kernel/rtlx.c

Extension

.c

Size

8924 bytes

Lines

410

Domain

Architecture Layer

Bucket

arch/mips

Inferred role

Architecture Layer: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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/kernel.h
• linux/fs.h
• linux/syscalls.h
• linux/moduleloader.h
• linux/atomic.h
• linux/sched/signal.h
• asm/mipsmtregs.h
• asm/mips_mt.h
• asm/processor.h
• asm/rtlx.h
• asm/setup.h
• asm/vpe.h

Detected Declarations

• function dump_rtlx
• function rtlx_init
• function rtlx_starting
• function rtlx_stopping
• function rtlx_open
• function rtlx_release
• function rtlx_read_poll
• function write_spacefree
• function rtlx_write_poll
• function rtlx_read
• function rtlx_write
• function file_open
• function file_release
• function file_poll
• function file_read
• function file_write
• module init rtlx_module_init
• export aprp_hook

Annotated Snippet

const struct file_operations rtlx_fops = {
	.owner =   THIS_MODULE,
	.open =    file_open,
	.release = file_release,
	.write =   file_write,
	.read =    file_read,
	.poll =    file_poll,
	.llseek =  noop_llseek,
};

module_init(rtlx_module_init);
module_exit(rtlx_module_exit);

MODULE_DESCRIPTION("MIPS RTLX");
MODULE_AUTHOR("Elizabeth Oldham, MIPS Technologies, Inc.");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/fs.h`, `linux/syscalls.h`, `linux/moduleloader.h`, `linux/atomic.h`, `linux/sched/signal.h`, `asm/mipsmtregs.h`, `asm/mips_mt.h`.
• Detected declarations: `function dump_rtlx`, `function rtlx_init`, `function rtlx_starting`, `function rtlx_stopping`, `function rtlx_open`, `function rtlx_release`, `function rtlx_read_poll`, `function write_spacefree`, `function rtlx_write_poll`, `function rtlx_read`.
• Atlas domain: Architecture Layer / arch/mips.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.