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c4dd854f74
Provide common prototypes for arch_register_cpu() and arch_unregister_cpu(). These are called by acpi_processor.c, with weak versions, so the prototype for this is already set. It is generally not necessary for function prototypes to be conditional on preprocessor macros. Some architectures (e.g. Loongarch) are missing the prototype for this, and rather than add it to Loongarch's asm/cpu.h, do the job once for everyone. Since this covers everyone, remove the now unnecessary prototypes in asm/cpu.h, and therefore remove the 'static' from one of ia64's arch_register_cpu() definitions. [ tglx: Bring back the ia64 part and remove the ACPI prototypes ] Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/E1qkoRr-0088Q8-Da@rmk-PC.armlinux.org.uk
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Populate sysfs with topology information
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*
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* Written by: Matthew Dobson, IBM Corporation
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* Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
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*
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* Copyright (C) 2002, IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <colpatch@us.ibm.com>
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*/
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#include <linux/interrupt.h>
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#include <linux/nodemask.h>
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#include <linux/export.h>
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#include <linux/mmzone.h>
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/irq.h>
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#include <asm/io_apic.h>
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#include <asm/cpu.h>
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static DEFINE_PER_CPU(struct x86_cpu, cpu_devices);
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#ifdef CONFIG_HOTPLUG_CPU
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int arch_register_cpu(int cpu)
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{
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struct x86_cpu *xc = per_cpu_ptr(&cpu_devices, cpu);
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xc->cpu.hotpluggable = cpu > 0;
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return register_cpu(&xc->cpu, cpu);
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}
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EXPORT_SYMBOL(arch_register_cpu);
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void arch_unregister_cpu(int num)
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{
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unregister_cpu(&per_cpu(cpu_devices, num).cpu);
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}
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EXPORT_SYMBOL(arch_unregister_cpu);
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#else /* CONFIG_HOTPLUG_CPU */
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int __init arch_register_cpu(int num)
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{
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return register_cpu(&per_cpu(cpu_devices, num).cpu, num);
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}
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#endif /* CONFIG_HOTPLUG_CPU */
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static int __init topology_init(void)
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{
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int i;
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for_each_present_cpu(i)
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arch_register_cpu(i);
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return 0;
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}
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subsys_initcall(topology_init);
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