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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/smpboot.h
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 * @create: Optional setup function, called when the thread gets
18 * created (Not called from the thread context)
19 * @setup: Optional setup function, called when the thread gets
20 * operational the first time
21 * @cleanup: Optional cleanup function, called when the thread
22 * should stop (module exit)
23 * @park: Optional park function, called when the thread is
24 * parked (cpu offline)
25 * @unpark: Optional unpark function, called when the thread is
26 * unparked (cpu online)
27 * @cpumask: Internal state. To update which threads are unparked,
28 * call smpboot_update_cpumask_percpu_thread().
29 * @selfparking: Thread is not parked by the park function.
30 * @thread_comm: The base name of the thread
32 struct smp_hotplug_thread
{
33 struct task_struct __percpu
**store
;
34 struct list_head list
;
35 int (*thread_should_run
)(unsigned int cpu
);
36 void (*thread_fn
)(unsigned int cpu
);
37 void (*create
)(unsigned int cpu
);
38 void (*setup
)(unsigned int cpu
);
39 void (*cleanup
)(unsigned int cpu
, bool online
);
40 void (*park
)(unsigned int cpu
);
41 void (*unpark
)(unsigned int cpu
);
42 cpumask_var_t cpumask
;
44 const char *thread_comm
;
47 int smpboot_register_percpu_thread_cpumask(struct smp_hotplug_thread
*plug_thread
,
48 const struct cpumask
*cpumask
);
51 smpboot_register_percpu_thread(struct smp_hotplug_thread
*plug_thread
)
53 return smpboot_register_percpu_thread_cpumask(plug_thread
,
57 void smpboot_unregister_percpu_thread(struct smp_hotplug_thread
*plug_thread
);
58 int smpboot_update_cpumask_percpu_thread(struct smp_hotplug_thread
*plug_thread
,
59 const struct cpumask
*);