arch/sparc/include/asm/irq_32.h

File Facts

System

Linux kernel

Corpus path

arch/sparc/include/asm/irq_32.h

Extension

.h

Size

498 bytes

Lines

25

Domain

Architecture Layer

Bucket

arch/sparc

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.

Dependency Surface

• linux/interrupt.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _SPARC_IRQ_H
#define _SPARC_IRQ_H

/* Allocated number of logical irq numbers.
 * sun4d boxes (ss2000e) should be OK with ~32.
 * Be on the safe side and make room for 64
 */
#define NR_IRQS    64

#include <linux/interrupt.h>

#define irq_canonicalize(irq)	(irq)

void __init sun4d_init_sbi_irq(void);

#define NO_IRQ		0xffffffff

#endif

Annotation

• Immediate include surface: `linux/interrupt.h`.
• Atlas domain: Architecture Layer / arch/sparc.
• 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.