arch/riscv/include/asm/vdso/arch_data.h

File Facts

System

Linux kernel

Corpus path

arch/riscv/include/asm/vdso/arch_data.h

Extension

.h

Size

638 bytes

Lines

24

Domain

Architecture Layer

Bucket

arch/riscv

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/types.h
• vdso/datapage.h
• asm/hwprobe.h

Detected Declarations

• struct vdso_arch_data

Annotated Snippet

struct vdso_arch_data {
	/* Stash static answers to the hwprobe queries when all CPUs are selected. */
	__u64 all_cpu_hwprobe_values[RISCV_HWPROBE_MAX_KEY + 1];

	/* Boolean indicating all CPUs have the same static hwprobe values. */
	__u8 homogeneous_cpus;

	/*
	 * A gate to check and see if the hwprobe data is actually ready, as
	 * probing is deferred to avoid boot slowdowns.
	 */
	__u8 ready;
};

#endif /* __RISCV_ASM_VDSO_ARCH_DATA_H */

Annotation

• Immediate include surface: `linux/types.h`, `vdso/datapage.h`, `asm/hwprobe.h`.
• Detected declarations: `struct vdso_arch_data`.
• Atlas domain: Architecture Layer / arch/riscv.
• 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.