Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _LINUX_SMPBOOT_H
2#define _LINUX_SMPBOOT_H
3
4#include <linux/types.h>
5
6struct task_struct;
7/* Cookie handed to the thread_fn*/
8struct 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 */
27struct 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
39int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread);
40void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread);
41int smpboot_thread_schedule(void);
42
43#endif