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https://github.com/brain-hackers/linux-brain.git
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59909e2302
commit 9cce844abf07b683cff5f0273977d5f8d0af94c7 upstream. Now CPU#0 is not hotpluggable on MIPS, so prevent to create /sys/devices /system/cpu/cpu0/online which confuses some user-space tools. Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
665 B
C
34 lines
665 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/cpu.h>
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#include <linux/cpumask.h>
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#include <linux/init.h>
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#include <linux/node.h>
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#include <linux/nodemask.h>
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#include <linux/percpu.h>
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static DEFINE_PER_CPU(struct cpu, cpu_devices);
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static int __init topology_init(void)
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{
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int i, ret;
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#ifdef CONFIG_NUMA
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for_each_online_node(i)
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register_one_node(i);
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#endif /* CONFIG_NUMA */
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for_each_present_cpu(i) {
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struct cpu *c = &per_cpu(cpu_devices, i);
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c->hotpluggable = !!i;
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ret = register_cpu(c, i);
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if (ret)
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printk(KERN_WARNING "topology_init: register_cpu %d "
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"failed (%d)\n", i, ret);
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}
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return 0;
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}
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subsys_initcall(topology_init);
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