1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_PAGE_REPORTING_H |
3 | #define _LINUX_PAGE_REPORTING_H |
4 | |
5 | #include <linux/mmzone.h> |
6 | #include <linux/scatterlist.h> |
7 | |
8 | /* This value should always be a power of 2, see page_reporting_cycle() */ |
9 | #define PAGE_REPORTING_CAPACITY 32 |
10 | |
11 | struct page_reporting_dev_info { |
12 | /* function that alters pages to make them "reported" */ |
13 | int (*report)(struct page_reporting_dev_info *prdev, |
14 | struct scatterlist *sg, unsigned int nents); |
15 | |
16 | /* work struct for processing reports */ |
17 | struct delayed_work work; |
18 | |
19 | /* Current state of page reporting */ |
20 | atomic_t state; |
21 | |
22 | /* Minimal order of page reporting */ |
23 | unsigned int order; |
24 | }; |
25 | |
26 | /* Tear-down and bring-up for page reporting devices */ |
27 | void page_reporting_unregister(struct page_reporting_dev_info *prdev); |
28 | int page_reporting_register(struct page_reporting_dev_info *prdev); |
29 | #endif /*_LINUX_PAGE_REPORTING_H */ |
30 | |