kernel/time/alarmtimer.c
Source file repositories/reference/linux-study-clean/kernel/time/alarmtimer.c
File Facts
- System
- Linux kernel
- Corpus path
kernel/time/alarmtimer.c- Extension
.c- Size
- 22724 bytes
- Lines
- 886
- 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.
- 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/time.hlinux/hrtimer.hlinux/timerqueue.hlinux/rtc.hlinux/sched/signal.hlinux/sched/debug.hlinux/alarmtimer.hlinux/mutex.hlinux/platform_device.hlinux/posix-timers.hlinux/workqueue.hlinux/freezer.hlinux/compat.hlinux/module.hlinux/time_namespace.hposix-timers.htrace/events/alarmtimer.h
Detected Declarations
function alarmtimer_rtc_add_devicefunction scoped_guardfunction alarmtimer_rtc_timer_initfunction alarmtimer_rtc_interface_setupfunction alarmtimer_rtc_interface_removefunction alarmtimer_rtc_interface_setupfunction alarmtimer_rtc_interface_removefunction alarmtimer_dequeuefunction alarmtimer_firedfunction alarm_expires_remainingfunction alarmtimer_suspendfunction scoped_guardfunction scoped_guardfunction alarmtimer_resumefunction alarmtimer_suspendfunction alarmtimer_resumefunction __alarm_initfunction alarm_initfunction alarm_start_timerfunction alarm_try_to_cancelfunction scoped_guardfunction alarm_cancelfunction alarm_forwardfunction alarm_forward_nowfunction alarmtimer_freezersetfunction clock2alarmfunction alarm_handle_timerfunction alarm_timer_rearmfunction alarm_timer_forwardfunction alarm_timer_remainingfunction alarm_timer_try_to_cancelfunction alarm_timer_wait_runningfunction alarm_timer_armfunction alarm_clock_getresfunction alarm_clock_get_timespecfunction alarm_clock_get_ktimefunction alarm_timer_createfunction alarmtimer_nsleep_wakeupfunction alarmtimer_do_nsleepfunction alarm_init_on_stackfunction alarm_timer_nsleep_restartfunction alarm_timer_nsleepfunction get_boottime_timespecfunction alarmtimer_initmodule init alarmtimer_initexport alarmtimer_get_rtcdevexport alarm_expires_remainingexport alarm_init
Annotated Snippet
device_initcall(alarmtimer_init);Annotation
- Immediate include surface: `linux/time.h`, `linux/hrtimer.h`, `linux/timerqueue.h`, `linux/rtc.h`, `linux/sched/signal.h`, `linux/sched/debug.h`, `linux/alarmtimer.h`, `linux/mutex.h`.
- Detected declarations: `function alarmtimer_rtc_add_device`, `function scoped_guard`, `function alarmtimer_rtc_timer_init`, `function alarmtimer_rtc_interface_setup`, `function alarmtimer_rtc_interface_remove`, `function alarmtimer_rtc_interface_setup`, `function alarmtimer_rtc_interface_remove`, `function alarmtimer_dequeue`, `function alarmtimer_fired`, `function alarm_expires_remaining`.
- Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
- 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.