arch/alpha/include/asm/smp.h

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

File Facts

System
Linux kernel
Corpus path
arch/alpha/include/asm/smp.h
Extension
.h
Size
1377 bytes
Lines
61
Domain
Architecture Layer
Bucket
arch/alpha
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

struct cpuinfo_alpha {
	unsigned long loops_per_jiffy;
	unsigned long last_asn;
	int need_new_asn;
	int asn_lock;
	unsigned long ipi_count;
	unsigned long prof_multiplier;
	unsigned long prof_counter;
	unsigned char mcheck_expected;
	unsigned char mcheck_taken;
	unsigned char mcheck_extra;
} __attribute__((aligned(64)));

extern struct cpuinfo_alpha cpu_data[NR_CPUS];

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

extern int smp_num_cpus;

extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);

#else /* CONFIG_SMP */

#define hard_smp_processor_id()		0
#define smp_call_function_on_cpu(func,info,wait,cpu)    ({ 0; })

#endif /* CONFIG_SMP */

#define NO_PROC_ID	(-1)

#endif

Annotation

Implementation Notes