arch/arm64/include/asm/cpu.h
Source file repositories/reference/linux-study-clean/arch/arm64/include/asm/cpu.h
File Facts
- System
- Linux kernel
- Corpus path
arch/arm64/include/asm/cpu.h- Extension
.h- Size
- 1623 bytes
- Lines
- 83
- Domain
- Architecture Layer
- Bucket
- arch/arm64
- Inferred role
- Architecture Layer: implementation source
- Status
- source 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/cpu.hlinux/init.hlinux/percpu.h
Detected Declarations
struct cpuinfo_32bitstruct cpuinfo_arm64
Annotated Snippet
struct cpuinfo_32bit {
u32 reg_id_dfr0;
u32 reg_id_dfr1;
u32 reg_id_isar0;
u32 reg_id_isar1;
u32 reg_id_isar2;
u32 reg_id_isar3;
u32 reg_id_isar4;
u32 reg_id_isar5;
u32 reg_id_isar6;
u32 reg_id_mmfr0;
u32 reg_id_mmfr1;
u32 reg_id_mmfr2;
u32 reg_id_mmfr3;
u32 reg_id_mmfr4;
u32 reg_id_mmfr5;
u32 reg_id_pfr0;
u32 reg_id_pfr1;
u32 reg_id_pfr2;
u32 reg_mvfr0;
u32 reg_mvfr1;
u32 reg_mvfr2;
};
struct cpuinfo_arm64 {
struct kobject kobj;
u64 reg_ctr;
u64 reg_cntfrq;
u64 reg_dczid;
u64 reg_midr;
u64 reg_revidr;
u64 reg_aidr;
u64 reg_gmid;
u64 reg_smidr;
u64 reg_mpamidr;
u64 reg_id_aa64dfr0;
u64 reg_id_aa64dfr1;
u64 reg_id_aa64isar0;
u64 reg_id_aa64isar1;
u64 reg_id_aa64isar2;
u64 reg_id_aa64isar3;
u64 reg_id_aa64mmfr0;
u64 reg_id_aa64mmfr1;
u64 reg_id_aa64mmfr2;
u64 reg_id_aa64mmfr3;
u64 reg_id_aa64mmfr4;
u64 reg_id_aa64pfr0;
u64 reg_id_aa64pfr1;
u64 reg_id_aa64pfr2;
u64 reg_id_aa64zfr0;
u64 reg_id_aa64smfr0;
u64 reg_id_aa64fpfr0;
struct cpuinfo_32bit aarch32;
};
DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
void cpuinfo_store_cpu(void);
void __init cpuinfo_store_boot_cpu(void);
void __init init_cpu_features(struct cpuinfo_arm64 *info);
void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
struct cpuinfo_arm64 *boot);
#endif /* __ASM_CPU_H */
Annotation
- Immediate include surface: `linux/cpu.h`, `linux/init.h`, `linux/percpu.h`.
- Detected declarations: `struct cpuinfo_32bit`, `struct cpuinfo_arm64`.
- Atlas domain: Architecture Layer / arch/arm64.
- Implementation status: source 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.