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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef _LINUX_SMPBOOT_H |
3 | #define _LINUX_SMPBOOT_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
7 | struct task_struct; | |
8 | /* Cookie handed to the thread_fn*/ | |
9 | struct smpboot_thread_data; | |
10 | ||
11 | /** | |
12 | * struct smp_hotplug_thread - CPU hotplug related thread descriptor | |
13 | * @store: Pointer to per cpu storage for the task pointers | |
14 | * @list: List head for core management | |
15 | * @thread_should_run: Check whether the thread should run or not. Called with | |
16 | * preemption disabled. | |
17 | * @thread_fn: The associated thread function | |
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18 | * @create: Optional setup function, called when the thread gets |
19 | * created (Not called from the thread context) | |
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20 | * @setup: Optional setup function, called when the thread gets |
21 | * operational the first time | |
22 | * @cleanup: Optional cleanup function, called when the thread | |
23 | * should stop (module exit) | |
24 | * @park: Optional park function, called when the thread is | |
25 | * parked (cpu offline) | |
26 | * @unpark: Optional unpark function, called when the thread is | |
27 | * unparked (cpu online) | |
7d7e499f | 28 | * @selfparking: Thread is not parked by the park function. |
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29 | * @thread_comm: The base name of the thread |
30 | */ | |
31 | struct smp_hotplug_thread { | |
32 | struct task_struct __percpu **store; | |
33 | struct list_head list; | |
34 | int (*thread_should_run)(unsigned int cpu); | |
35 | void (*thread_fn)(unsigned int cpu); | |
7d7e499f | 36 | void (*create)(unsigned int cpu); |
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37 | void (*setup)(unsigned int cpu); |
38 | void (*cleanup)(unsigned int cpu, bool online); | |
39 | void (*park)(unsigned int cpu); | |
40 | void (*unpark)(unsigned int cpu); | |
7d7e499f | 41 | bool selfparking; |
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42 | const char *thread_comm; |
43 | }; | |
44 | ||
167a8867 | 45 | int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread); |
230ec939 | 46 | |
f97f8f06 | 47 | void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread); |
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48 | |
49 | #endif |