diff options
Diffstat (limited to 'include/linux/page_reporting.h')
| -rw-r--r-- | include/linux/page_reporting.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/page_reporting.h b/include/linux/page_reporting.h new file mode 100644 index 000000000000..fe648dfa3a7c --- /dev/null +++ b/include/linux/page_reporting.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_PAGE_REPORTING_H +#define _LINUX_PAGE_REPORTING_H + +#include <linux/mmzone.h> +#include <linux/scatterlist.h> + +/* This value should always be a power of 2, see page_reporting_cycle() */ +#define PAGE_REPORTING_CAPACITY 32 + +struct page_reporting_dev_info { + /* function that alters pages to make them "reported" */ + int (*report)(struct page_reporting_dev_info *prdev, + struct scatterlist *sg, unsigned int nents); + + /* work struct for processing reports */ + struct delayed_work work; + + /* Current state of page reporting */ + atomic_t state; + + /* Minimal order of page reporting */ + unsigned int order; +}; + +/* Tear-down and bring-up for page reporting devices */ +void page_reporting_unregister(struct page_reporting_dev_info *prdev); +int page_reporting_register(struct page_reporting_dev_info *prdev); +#endif /*_LINUX_PAGE_REPORTING_H */ |