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MIPS: Add arch generic CPU hotplug

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Each platform has to add support for CPU hotplugging itself by providing
suitable definitions for the cpu_disable and cpu_die of the smp_ops
methods and setting SYS_SUPPORTS_HOTPLUG_CPU.  A platform should only set
SYS_SUPPORTS_HOTPLUG_CPU once all it's smp_ops definitions have the
necessary changes.  This patch contains the changes to the dummy smp_ops
definition for uni-processor systems.

Parts of the code contributed by Cavium Inc.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2009-06-23 10:00:31 +01:00
parent 4ac4aa5cc3
commit 1b2bc75c1b
7 changed files with 78 additions and 7 deletions
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4
arch/mips/include/asm/smp-ops.h
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@ -26,6 +26,10 @@ struct plat_smp_ops {
void (*boot_secondary)(int cpu, struct task_struct *idle);
void (*smp_setup)(void);
void (*prepare_cpus)(unsigned int max_cpus);
#ifdef CONFIG_HOTPLUG_CPU
int (*cpu_disable)(void);
void (*cpu_die)(unsigned int cpu);
#endif
};
extern void register_smp_ops(struct plat_smp_ops *ops);