kernel/trace/rv/monitors/stall/stall.c

File Facts

System

Linux kernel

Corpus path

kernel/trace/rv/monitors/stall/stall.c

Extension

.c

Size

3919 bytes

Lines

151

Domain

Core OS

Bucket

Scheduler, Processes, Timers, Sync, And Syscalls

Inferred role

Core OS: exported/initcall integration point

Status

integration 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.
• 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/ftrace.h
• linux/tracepoint.h
• linux/kernel.h
• linux/module.h
• linux/init.h
• linux/rv.h
• rv/instrumentation.h
• trace/events/sched.h
• rv_trace.h
• stall.h
• rv/ha_monitor.h

Detected Declarations

• function ha_get_env
• function ha_reset_env
• function ha_verify_invariants
• function ha_verify_guards
• function ha_setup_invariants
• function ha_verify_constraint
• function handle_sched_switch
• function handle_sched_wakeup
• function enable_stall
• function disable_stall
• function register_stall
• function unregister_stall
• module init register_stall

Annotated Snippet

module_init(register_stall);
module_exit(unregister_stall);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gabriele Monaco <gmonaco@redhat.com>");
MODULE_DESCRIPTION("stall: identify tasks stalled for longer than a threshold.");

Annotation

• Immediate include surface: `linux/ftrace.h`, `linux/tracepoint.h`, `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/rv.h`, `rv/instrumentation.h`, `trace/events/sched.h`.
• Detected declarations: `function ha_get_env`, `function ha_reset_env`, `function ha_verify_invariants`, `function ha_verify_guards`, `function ha_setup_invariants`, `function ha_verify_constraint`, `function handle_sched_switch`, `function handle_sched_wakeup`, `function enable_stall`, `function disable_stall`.
• Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
• 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.