kernel/profile.c
Source file repositories/reference/linux-study-clean/kernel/profile.c
File Facts
- System
- Linux kernel
- Corpus path
kernel/profile.c- Extension
.c- Size
- 5775 bytes
- Lines
- 231
- 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.
- 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.
- 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/export.hlinux/profile.hlinux/memblock.hlinux/notifier.hlinux/mm.hlinux/cpumask.hlinux/cpu.hlinux/highmem.hlinux/mutex.hlinux/slab.hlinux/vmalloc.hlinux/sched/stat.hasm/sections.hasm/irq_regs.hasm/ptrace.hlinux/proc_fs.hlinux/seq_file.hlinux/uaccess.h
Detected Declarations
struct profile_hitfunction profile_setupfunction profile_initfunction do_profile_hitsfunction profile_hitsfunction profile_tickfunction read_profilefunction setup_profiling_timerfunction write_profilefunction create_proc_profilemodule init create_proc_profileexport prof_onexport profile_hits
Annotated Snippet
subsys_initcall(create_proc_profile);
#endif /* CONFIG_PROC_FS */Annotation
- Immediate include surface: `linux/export.h`, `linux/profile.h`, `linux/memblock.h`, `linux/notifier.h`, `linux/mm.h`, `linux/cpumask.h`, `linux/cpu.h`, `linux/highmem.h`.
- Detected declarations: `struct profile_hit`, `function profile_setup`, `function profile_init`, `function do_profile_hits`, `function profile_hits`, `function profile_tick`, `function read_profile`, `function setup_profiling_timer`, `function write_profile`, `function create_proc_profile`.
- Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
- Implementation status: integration 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.