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