arch/sh/include/asm/smp-ops.h

File Facts

System

Linux kernel

Corpus path

arch/sh/include/asm/smp-ops.h

Extension

.h

Size

1042 bytes

Lines

54

Domain

Architecture Layer

Bucket

arch/sh

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct plat_smp_ops
• function plat_smp_setup
• function play_dead
• function plat_smp_setup

Annotated Snippet

struct plat_smp_ops {
	void (*smp_setup)(void);
	unsigned int (*smp_processor_id)(void);
	void (*prepare_cpus)(unsigned int max_cpus);
	void (*start_cpu)(unsigned int cpu, unsigned long entry_point);
	void (*send_ipi)(unsigned int cpu, unsigned int message);
	int (*cpu_disable)(unsigned int cpu);
	void (*cpu_die)(unsigned int cpu);
	void (*play_dead)(void);
};

extern struct plat_smp_ops *mp_ops;
extern struct plat_smp_ops shx3_smp_ops;

#ifdef CONFIG_SMP

static inline void plat_smp_setup(void)
{
	BUG_ON(!mp_ops);
	mp_ops->smp_setup();
}

static inline void __noreturn play_dead(void)
{
	mp_ops->play_dead();
	BUG();
}

extern void register_smp_ops(struct plat_smp_ops *ops);

#else

static inline void plat_smp_setup(void)
{
	/* UP, nothing to do ... */
}

static inline void register_smp_ops(struct plat_smp_ops *ops)
{
}

static inline void __noreturn play_dead(void)
{
	BUG();
}

#endif /* CONFIG_SMP */

#endif /* __ASM_SH_SMP_OPS_H */

Annotation

• Detected declarations: `struct plat_smp_ops`, `function plat_smp_setup`, `function play_dead`, `function plat_smp_setup`.
• Atlas domain: Architecture Layer / arch/sh.
• 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.