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This is a simple implement of CPU-hotplug for power saving. CPU use wait instruction to enter power saving mode and waiting for IPI wakeup signal. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
30 lines
626 B
C
30 lines
626 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_CSKY_SMP_H
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#define __ASM_CSKY_SMP_H
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#include <linux/cpumask.h>
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#include <linux/irqreturn.h>
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#include <linux/threads.h>
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#ifdef CONFIG_SMP
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void __init setup_smp(void);
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void __init setup_smp_ipi(void);
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void arch_send_call_function_ipi_mask(struct cpumask *mask);
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void arch_send_call_function_single_ipi(int cpu);
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void __init set_send_ipi(void (*func)(const struct cpumask *mask), int irq);
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#define raw_smp_processor_id() (current_thread_info()->cpu)
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int __cpu_disable(void);
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void __cpu_die(unsigned int cpu);
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#endif /* CONFIG_SMP */
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#endif /* __ASM_CSKY_SMP_H */
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