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