mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
40dc166cb5
Some subsystems need to carry out suspend/resume and shutdown operations with one CPU on-line and interrupts disabled. The only way to register such operations is to define a sysdev class and a sysdev specifically for this purpose which is cumbersome and inefficient. Moreover, the arguments taken by sysdev suspend, resume and shutdown callbacks are practically never necessary. For this reason, introduce a simpler interface allowing subsystems to register operations to be executed very late during system suspend and shutdown and very early during resume in the form of strcut syscore_ops objects. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
30 lines
635 B
C
30 lines
635 B
C
/*
|
|
* syscore_ops.h - System core operations.
|
|
*
|
|
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
|
|
*
|
|
* This file is released under the GPLv2.
|
|
*/
|
|
|
|
#ifndef _LINUX_SYSCORE_OPS_H
|
|
#define _LINUX_SYSCORE_OPS_H
|
|
|
|
#include <linux/list.h>
|
|
|
|
struct syscore_ops {
|
|
struct list_head node;
|
|
int (*suspend)(void);
|
|
void (*resume)(void);
|
|
void (*shutdown)(void);
|
|
};
|
|
|
|
extern void register_syscore_ops(struct syscore_ops *ops);
|
|
extern void unregister_syscore_ops(struct syscore_ops *ops);
|
|
#ifdef CONFIG_PM_SLEEP
|
|
extern int syscore_suspend(void);
|
|
extern void syscore_resume(void);
|
|
#endif
|
|
extern void syscore_shutdown(void);
|
|
|
|
#endif
|