mirror of https://gitee.com/openkylin/linux.git
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
#ifndef __ASM_SH_SMP_H
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#define __ASM_SH_SMP_H
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#include <linux/bitops.h>
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#include <linux/cpumask.h>
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#ifdef CONFIG_SMP
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#include <linux/spinlock.h>
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#include <asm/atomic.h>
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#include <asm/current.h>
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#define raw_smp_processor_id() (current_thread_info()->cpu)
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#define hard_smp_processor_id() plat_smp_processor_id()
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/* Map from cpu id to sequential logical cpu number. */
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extern int __cpu_number_map[NR_CPUS];
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#define cpu_number_map(cpu) __cpu_number_map[cpu]
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/* The reverse map from sequential logical cpu number to cpu id. */
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extern int __cpu_logical_map[NR_CPUS];
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#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
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/* I've no idea what the real meaning of this is */
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#define PROC_CHANGE_PENALTY 20
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#define NO_PROC_ID (-1)
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#define SMP_MSG_FUNCTION 0
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#define SMP_MSG_RESCHEDULE 1
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#define SMP_MSG_FUNCTION_SINGLE 2
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#define SMP_MSG_NR 3
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void plat_smp_setup(void);
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void plat_prepare_cpus(unsigned int max_cpus);
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int plat_smp_processor_id(void);
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void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
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void plat_send_ipi(unsigned int cpu, unsigned int message);
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int plat_register_ipi_handler(unsigned int message,
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void (*handler)(void *), void *arg);
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extern void arch_send_call_function_single_ipi(int cpu);
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extern void arch_send_call_function_ipi(cpumask_t mask);
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#else
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#define hard_smp_processor_id() (0)
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#endif /* CONFIG_SMP */
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#endif /* __ASM_SH_SMP_H */
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