c8d2bcc467
Switch to the CPU hotplug core state tracking and synchronization mechanim. This unfortunately requires to add dead reporting to the non CPS platforms as CPS is the only user, but it allows an overall consolidation of this functionality. No functional change intended. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Tested-by: Helge Deller <deller@gmx.de> # parisc Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> # Steam Deck Link: https://lore.kernel.org/r/20230512205256.803238859@linutronix.de
109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file "COPYING" in the main directory of this
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* archive for more details.
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*
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* Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
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* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
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* Copyright (C) 2000, 2001, 2002 Ralf Baechle
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* Copyright (C) 2000, 2001 Broadcom Corporation
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*/
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#ifndef __ASM_SMP_OPS_H
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#define __ASM_SMP_OPS_H
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#include <linux/errno.h>
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#include <asm/mips-cps.h>
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#ifdef CONFIG_SMP
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#include <linux/cpumask.h>
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struct task_struct;
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struct plat_smp_ops {
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void (*send_ipi_single)(int cpu, unsigned int action);
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void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
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void (*init_secondary)(void);
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void (*smp_finish)(void);
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int (*boot_secondary)(int cpu, struct task_struct *idle);
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void (*smp_setup)(void);
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void (*prepare_cpus)(unsigned int max_cpus);
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void (*prepare_boot_cpu)(void);
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#ifdef CONFIG_HOTPLUG_CPU
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int (*cpu_disable)(void);
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void (*cpu_die)(unsigned int cpu);
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void (*cleanup_dead_cpu)(unsigned cpu);
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#endif
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#ifdef CONFIG_KEXEC
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void (*kexec_nonboot_cpu)(void);
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#endif
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};
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extern void register_smp_ops(const struct plat_smp_ops *ops);
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static inline void plat_smp_setup(void)
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{
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extern const struct plat_smp_ops *mp_ops; /* private */
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mp_ops->smp_setup();
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}
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extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
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extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
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unsigned int action);
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#else /* !CONFIG_SMP */
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struct plat_smp_ops;
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static inline void plat_smp_setup(void)
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{
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/* UP, nothing to do ... */
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}
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static inline void register_smp_ops(const struct plat_smp_ops *ops)
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{
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}
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#endif /* !CONFIG_SMP */
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static inline int register_up_smp_ops(void)
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{
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#ifdef CONFIG_SMP_UP
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extern const struct plat_smp_ops up_smp_ops;
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register_smp_ops(&up_smp_ops);
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return 0;
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#else
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return -ENODEV;
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#endif
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}
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static inline int register_vsmp_smp_ops(void)
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{
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#ifdef CONFIG_MIPS_MT_SMP
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extern const struct plat_smp_ops vsmp_smp_ops;
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if (!cpu_has_mipsmt)
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return -ENODEV;
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register_smp_ops(&vsmp_smp_ops);
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return 0;
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#else
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return -ENODEV;
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#endif
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}
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#ifdef CONFIG_MIPS_CPS
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extern int register_cps_smp_ops(void);
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#else
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static inline int register_cps_smp_ops(void)
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{
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return -ENODEV;
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}
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#endif
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#endif /* __ASM_SMP_OPS_H */
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