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Yuvraj Sakshith
5467c292d0
PAGE_REPORTING_ORDER_UNSPECIFIED is now set to zero. This means, pages of order zero cannot be reported to a client/driver -- as zero is used to signal a fallback to MAX_PAGE_ORDER. Change PAGE_REPORTING_ORDER_UNSPECIFIED to (-1), so that zero can be used as a valid order with which pages can be reported. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Yuvraj Sakshith <[email protected]> Acked-by: David Hildenbrand (Arm) <[email protected]> Reviewed-by: Michael Kelley <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Cc: Brendan Jackman <[email protected]> Cc: Dexuan Cui <[email protected]> Cc: Eugenio Pérez <[email protected]> Cc: Haiyang Zhang <[email protected]> Cc: Jason Wang <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: K. Y. Srinivasan <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Long Li <[email protected]> Cc: Lorenzo Stoakes (Oracle) <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Wei Liu <[email protected]> Cc: Xuan Zhuo <[email protected]> Cc: Zi Yan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
31 lines
939 B
C
31 lines
939 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_PAGE_REPORTING_H
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#define _LINUX_PAGE_REPORTING_H
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#include <linux/mmzone.h>
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#include <linux/scatterlist.h>
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/* This value should always be a power of 2, see page_reporting_cycle() */
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#define PAGE_REPORTING_CAPACITY 32
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#define PAGE_REPORTING_ORDER_UNSPECIFIED -1
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struct page_reporting_dev_info {
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/* function that alters pages to make them "reported" */
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int (*report)(struct page_reporting_dev_info *prdev,
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struct scatterlist *sg, unsigned int nents);
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/* work struct for processing reports */
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struct delayed_work work;
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/* Current state of page reporting */
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atomic_t state;
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/* Minimal order of page reporting */
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unsigned int order;
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};
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/* Tear-down and bring-up for page reporting devices */
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void page_reporting_unregister(struct page_reporting_dev_info *prdev);
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int page_reporting_register(struct page_reporting_dev_info *prdev);
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#endif /*_LINUX_PAGE_REPORTING_H */
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