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| 2 | #ifndef _LINUX_SMPBOOT_H
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| 3 | #define _LINUX_SMPBOOT_H
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| 4 |
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| 5 | #include <linux/types.h>
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| 6 |
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| 7 | struct task_struct;
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| 8 |
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| 9 | struct smpboot_thread_data;
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| 10 |
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| 11 | |
| 12 | * struct smp_hotplug_thread - CPU hotplug related thread descriptor
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| 13 | * @store: Pointer to per cpu storage for the task pointers
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| 14 | * @list: List head for core management
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| 15 | * @thread_should_run: Check whether the thread should run or not. Called with
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| 16 | * preemption disabled.
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| 17 | * @thread_fn: The associated thread function
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| 18 | * @create: Optional setup function, called when the thread gets
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| 19 | * created (Not called from the thread context)
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| 20 | * @setup: Optional setup function, called when the thread gets
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| 21 | * operational the first time
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| 22 | * @cleanup: Optional cleanup function, called when the thread
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| 23 | * should stop (module exit)
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| 24 | * @park: Optional park function, called when the thread is
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| 25 | * parked (cpu offline)
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| 26 | * @unpark: Optional unpark function, called when the thread is
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| 27 | * unparked (cpu online)
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| 28 | * @selfparking: Thread is not parked by the park function.
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| 29 | * @thread_comm: The base name of the thread
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| 30 |
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| 31 | struct smp_hotplug_thread {
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| 32 | struct task_struct * __percpu *store;
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| 33 | struct list_head list;
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| 34 | int (*thread_should_run)(unsigned int cpu);
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| 35 | void (*thread_fn)(unsigned int cpu);
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| 36 | void (*create)(unsigned int cpu);
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| 37 | void (*setup)(unsigned int cpu);
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| 38 | void (*cleanup)(unsigned int cpu, bool online);
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| 39 | void (*park)(unsigned int cpu);
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| 40 | void (*unpark)(unsigned int cpu);
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| 41 | bool selfparking;
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| 42 | const char *thread_comm;
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| 43 | };
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| 44 |
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| 45 | int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread);
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| 46 |
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| 47 | void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread);
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| 48 |
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| 49 | #endif
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