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mm/page_reporting.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _MM_PAGE_REPORTING_H #define _MM_PAGE_REPORTING_H #include <linux/mmzone.h> #include <linux/pageblock-flags.h> #include <linux/page-isolation.h> #include <linux/jump_label.h> #include <linux/slab.h> |
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#include <linux/pgtable.h> |
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#include <linux/scatterlist.h> #define PAGE_REPORTING_MIN_ORDER pageblock_order #ifdef CONFIG_PAGE_REPORTING DECLARE_STATIC_KEY_FALSE(page_reporting_enabled); void __page_reporting_notify(void); static inline bool page_reported(struct page *page) { return static_branch_unlikely(&page_reporting_enabled) && PageReported(page); } /** * page_reporting_notify_free - Free page notification to start page processing * * This function is meant to act as a screener for __page_reporting_notify * which will determine if a give zone has crossed over the high-water mark * that will justify us beginning page treatment. If we have crossed that * threshold then it will start the process of pulling some pages and * placing them in the batch list for treatment. */ static inline void page_reporting_notify_free(unsigned int order) { /* Called from hot path in __free_one_page() */ if (!static_branch_unlikely(&page_reporting_enabled)) return; /* Determine if we have crossed reporting threshold */ if (order < PAGE_REPORTING_MIN_ORDER) return; /* This will add a few cycles, but should be called infrequently */ __page_reporting_notify(); } #else /* CONFIG_PAGE_REPORTING */ #define page_reported(_page) false static inline void page_reporting_notify_free(unsigned int order) { } #endif /* CONFIG_PAGE_REPORTING */ #endif /*_MM_PAGE_REPORTING_H */ |