drivers/leds/trigger/ledtrig-heartbeat.c
Source file repositories/reference/linux-study-clean/drivers/leds/trigger/ledtrig-heartbeat.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/leds/trigger/ledtrig-heartbeat.c- Extension
.c- Size
- 5563 bytes
- Lines
- 214
- Domain
- Driver Families
- Bucket
- drivers/leds
- Inferred role
- Driver Families: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- 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.hlinux/kernel.hlinux/init.hlinux/panic_notifier.hlinux/slab.hlinux/timer.hlinux/sched.hlinux/sched/loadavg.hlinux/leds.hlinux/reboot.h../leds.h
Detected Declarations
struct heartbeat_trig_datafunction led_heartbeat_functionfunction led_invert_showfunction led_invert_storefunction heartbeat_trig_activatefunction heartbeat_trig_deactivatefunction heartbeat_reboot_notifierfunction heartbeat_panic_notifierfunction heartbeat_trig_initfunction heartbeat_trig_exitmodule init heartbeat_trig_init
Annotated Snippet
module_init(heartbeat_trig_init);
module_exit(heartbeat_trig_exit);
MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
MODULE_DESCRIPTION("Heartbeat LED trigger");
MODULE_LICENSE("GPL v2");Annotation
- Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/init.h`, `linux/panic_notifier.h`, `linux/slab.h`, `linux/timer.h`, `linux/sched.h`, `linux/sched/loadavg.h`.
- Detected declarations: `struct heartbeat_trig_data`, `function led_heartbeat_function`, `function led_invert_show`, `function led_invert_store`, `function heartbeat_trig_activate`, `function heartbeat_trig_deactivate`, `function heartbeat_reboot_notifier`, `function heartbeat_panic_notifier`, `function heartbeat_trig_init`, `function heartbeat_trig_exit`.
- Atlas domain: Driver Families / drivers/leds.
- Implementation status: integration 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.