arch/riscv/include/asm/smp.h

Source file repositories/reference/linux-study-clean/arch/riscv/include/asm/smp.h

File Facts

System
Linux kernel
Corpus path
arch/riscv/include/asm/smp.h
Extension
.h
Size
2553 bytes
Lines
118
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.

Dependency Surface

Detected Declarations

Annotated Snippet

static inline void __cpu_die(unsigned int cpu) { }
#endif /* CONFIG_HOTPLUG_CPU */

#else

static inline void show_ipi_stats(struct seq_file *p, int prec)
{
}

static inline int riscv_hartid_to_cpuid(unsigned long hartid)
{
	if (hartid == boot_cpu_hartid)
		return 0;

	return -1;
}
static inline unsigned long cpuid_to_hartid_map(int cpu)
{
	return boot_cpu_hartid;
}

static inline void riscv_ipi_enable(void)
{
}

static inline void riscv_ipi_disable(void)
{
}

static inline bool riscv_ipi_have_virq_range(void)
{
	return false;
}

static inline void riscv_ipi_set_virq_range(int virq, int nr)
{
}

#endif /* CONFIG_SMP */

#if defined(CONFIG_HOTPLUG_CPU)
bool cpu_has_hotplug(unsigned int cpu);
#else
static inline bool cpu_has_hotplug(unsigned int cpu)
{
	return false;
}
#endif

#endif /* _ASM_RISCV_SMP_H */

Annotation

Implementation Notes