47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright (C) 2012 Regents of the University of California
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _ASM_RISCV_SMP_H
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#define _ASM_RISCV_SMP_H
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/* This both needs asm-offsets.h and is used when generating it. */
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#ifndef GENERATING_ASM_OFFSETS
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#include <asm/asm-offsets.h>
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#endif
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#include <linux/cpumask.h>
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#include <linux/irqreturn.h>
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#ifdef CONFIG_SMP
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/* SMP initialization hook for setup_arch */
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void __init setup_smp(void);
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/* Hook for the generic smp_call_function_many() routine. */
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void arch_send_call_function_ipi_mask(struct cpumask *mask);
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/* Hook for the generic smp_call_function_single() routine. */
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void arch_send_call_function_single_ipi(int cpu);
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/*
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* This is particularly ugly: it appears we can't actually get the definition
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* of task_struct here, but we need access to the CPU this task is running on.
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* Instead of using C we're using asm-offsets.h to get the current processor
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* ID.
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*/
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#define raw_smp_processor_id() (*((int*)((char*)get_current() + TASK_TI_CPU)))
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#endif /* CONFIG_SMP */
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#endif /* _ASM_RISCV_SMP_H */
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