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1 | #ifndef _LINUX_SMPBOOT_H |
2 | #define _LINUX_SMPBOOT_H | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | struct task_struct; | |
7 | /* Cookie handed to the thread_fn*/ | |
8 | struct smpboot_thread_data; | |
9 | ||
10 | /** | |
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 | |
26 | */ | |
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; | |
37 | }; | |
38 | ||
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); | |
42 | ||
43 | #endif |