arch/hexagon/include/asm/smp.h

File Facts

System

Linux kernel

Corpus path

arch/hexagon/include/asm/smp.h

Extension

.h

Size

707 bytes

Lines

31

Domain

Architecture Layer

Bucket

arch/hexagon

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/cpumask.h

Detected Declarations

• enum ipi_message_type

Annotated Snippet

#ifndef __ASM_SMP_H
#define __ASM_SMP_H

#include <linux/cpumask.h>

#define raw_smp_processor_id() (current_thread_info()->cpu)

enum ipi_message_type {
	IPI_NOP = 0,
	IPI_RESCHEDULE = 1,
	IPI_CALL_FUNC,
	IPI_CPU_STOP,
	IPI_TIMER,
};

extern void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg);
extern void smp_start_cpus(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);

extern void smp_vm_unmask_irq(void *info);

#endif

Annotation

• Immediate include surface: `linux/cpumask.h`.
• Detected declarations: `enum ipi_message_type`.
• Atlas domain: Architecture Layer / arch/hexagon.
• 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.