smpboot.c (79093f3ec39c90edf4bd1a532d922ee6163441ec) smpboot.c (62ff262227a45bf917fe198885ab7aa19be5a01f)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * SMP initialisation and IPI support
4 * Based on arch/arm64/kernel/smp.c
5 *
6 * Copyright (C) 2012 ARM Ltd.
7 * Copyright (C) 2015 Regents of the University of California
8 * Copyright (C) 2017 SiFive

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161 pr_warn("Total number of cpus [%d] is greater than nr_cpus option value [%d]\n",
162 cpuid, nr_cpu_ids);
163}
164
165void __init setup_smp(void)
166{
167 int cpuid;
168
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * SMP initialisation and IPI support
4 * Based on arch/arm64/kernel/smp.c
5 *
6 * Copyright (C) 2012 ARM Ltd.
7 * Copyright (C) 2015 Regents of the University of California
8 * Copyright (C) 2017 SiFive

--- 152 unchanged lines hidden (view full) ---

161 pr_warn("Total number of cpus [%d] is greater than nr_cpus option value [%d]\n",
162 cpuid, nr_cpu_ids);
163}
164
165void __init setup_smp(void)
166{
167 int cpuid;
168
169 cpu_set_ops(0);
169 cpu_set_ops();
170
171 if (acpi_disabled)
172 of_parse_and_init_cpus();
173 else
174 acpi_parse_and_init_cpus();
175
170
171 if (acpi_disabled)
172 of_parse_and_init_cpus();
173 else
174 acpi_parse_and_init_cpus();
175
176 for (cpuid = 1; cpuid < nr_cpu_ids; cpuid++) {
177 if (cpuid_to_hartid_map(cpuid) != INVALID_HARTID) {
178 cpu_set_ops(cpuid);
176 for (cpuid = 1; cpuid < nr_cpu_ids; cpuid++)
177 if (cpuid_to_hartid_map(cpuid) != INVALID_HARTID)
179 set_cpu_possible(cpuid, true);
178 set_cpu_possible(cpuid, true);
180 }
181 }
182}
183
184static int start_secondary_cpu(int cpu, struct task_struct *tidle)
185{
179}
180
181static int start_secondary_cpu(int cpu, struct task_struct *tidle)
182{
186 if (cpu_ops[cpu]->cpu_start)
187 return cpu_ops[cpu]->cpu_start(cpu, tidle);
183 if (cpu_ops->cpu_start)
184 return cpu_ops->cpu_start(cpu, tidle);
188
189 return -EOPNOTSUPP;
190}
191
192int __cpu_up(unsigned int cpu, struct task_struct *tidle)
193{
194 int ret = 0;
195 tidle->thread_info.cpu = cpu;

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186 return -EOPNOTSUPP;
187}
188
189int __cpu_up(unsigned int cpu, struct task_struct *tidle)
190{
191 int ret = 0;
192 tidle->thread_info.cpu = cpu;

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