/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 Regents of the University of California */ #ifndef _ASM_RISCV_SMP_H #define _ASM_RISCV_SMP_H #include <linux/cpumask.h> #include <linux/irqreturn.h> #include <linux/thread_info.h> #define INVALID_HARTID ULONG_MAX struct seq_file; extern unsigned long boot_cpu_hartid; #ifdef [31mCONFIG_SMP[0m /* * Mapping between linux logical cpu index and hartid. */ extern unsigned long __cpuid_to_hartid_map[NR_CPUS]; #define cpuid_to_hartid_map(cpu) __cpuid_to_hartid_map[cpu] /* print IPI stats */ void show_ipi_stats(struct seq_file *p, int prec); /* SMP initialization hook for setup_arch */ void __init setup_smp(void); /* Hook for the generic smp_call_function_many() routine. */ void arch_send_call_function_ipi_mask(struct cpumask *mask); /* Hook for the generic smp_call_function_single() routine. */ void arch_send_call_function_single_ipi(int cpu); int riscv_hartid_to_cpuid(int hartid); void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out); /* * Obtains the hart ID of the currently executing task. This relies on * THREAD_INFO_IN_TASK, but we define that unconditionally. */ #define raw_smp_processor_id() (current_thread_info()->cpu) #else static inline void show_ipi_stats(struct seq_file *p, int prec) { } static inline int riscv_hartid_to_cpuid(int hartid) { if (hartid == boot_cpu_hartid) return 0; return -1; } static inline unsigned long cpuid_to_hartid_map(int cpu) { return boot_cpu_hartid; } #endif /* CONFIG_SMP */ #endif /* _ASM_RISCV_SMP_H */ |