函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\power\user.c Create Date:2022-07-27 11:03:46
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：snapshot_release

函数原型：static int snapshot_release(struct inode *inode, struct file *filp)

返回类型：int

参数：

类型参数名称
struct inode *inode
struct file *filp
113  lock_system_sleep()
115  swsusp_free - Free pages allocated for hibernation image.* Image pages are alocated before snapshot creation, so they need to be* released after resume.
116  data等于 needed for tty driver, and maybe others
117  _all_swap_pages - free swap pages allocated for saving image data.* It also frees the extents used to register which swap entries had been* allocated.
118  如果frozen则
119  pm_restore_gfp_mask()
120  _basic_memory_bitmaps - Free memory bitmaps holding basic information.* Free memory bitmaps allocated by create_basic_memory_bitmaps(). The* auxiliary pointers are necessary so that the bitmaps themselves are not* referred to while they are being freed.
121  thaw_processes()
122  否则如果free_bitmaps则
123  _basic_memory_bitmaps - Free memory bitmaps holding basic information.* Free memory bitmaps allocated by create_basic_memory_bitmaps(). The* auxiliary pointers are necessary so that the bitmaps themselves are not* referred to while they are being freed.
125  pm_notifier_call_chain(mode == O_RDONLY ? Hibernation finished : Restore failed )
127  atomic_inc( & snapshot_device_available)
129  unlock_system_sleep()
131  返回:0