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2024-03-22 f63cd4c03ea42695d5f9b0e1798edd196923aae6

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_PAGE_PINNER_H
#define __LINUX_PAGE_PINNER_H
 
#include <linux/jump_label.h>
 
#ifdef CONFIG_PAGE_PINNER
extern struct static_key_false page_pinner_inited;
extern struct static_key_true failure_tracking;
extern struct page_ext_operations page_pinner_ops;
 
extern void __reset_page_pinner(struct page *page, unsigned int order, bool free);
extern void __set_page_pinner(struct page *page, unsigned int order);
extern void __dump_page_pinner(struct page *page);
void __page_pinner_migration_failed(struct page *page);
void __page_pinner_mark_migration_failed_pages(struct list_head *page_list);
 
static inline void reset_page_pinner(struct page *page, unsigned int order)
{
    if (static_branch_unlikely(&page_pinner_inited))
        __reset_page_pinner(page, order, false);
}
 
static inline void free_page_pinner(struct page *page, unsigned int order)
{
    if (static_branch_unlikely(&page_pinner_inited))
        __reset_page_pinner(page, order, true);
}
 
static inline void set_page_pinner(struct page *page, unsigned int order)
{
    if (static_branch_unlikely(&page_pinner_inited))
        __set_page_pinner(page, order);
}
 
static inline void dump_page_pinner(struct page *page)
{
    if (static_branch_unlikely(&page_pinner_inited))
        __dump_page_pinner(page);
}
 
static inline void page_pinner_put_page(struct page *page)
{
    if (!static_branch_unlikely(&failure_tracking))
        return;
 
    __page_pinner_migration_failed(page);
}
 
static inline void page_pinner_failure_detect(struct page *page)
{
    if (!static_branch_unlikely(&failure_tracking))
        return;
 
    __page_pinner_migration_failed(page);
}
 
static inline void page_pinner_mark_migration_failed_pages(struct list_head *page_list)
{
    if (!static_branch_unlikely(&failure_tracking))
        return;
 
    __page_pinner_mark_migration_failed_pages(page_list);
}
#else
static inline void reset_page_pinner(struct page *page, unsigned int order)
{
}
static inline void free_page_pinner(struct page *page, unsigned int order)
{
}
static inline void set_page_pinner(struct page *page, unsigned int order)
{
}
static inline void dump_page_pinner(struct page *page)
{
}
static inline void page_pinner_put_page(struct page *page)
{
}
static inline void page_pinner_failure_detect(struct page *page)
{
}
static inline void page_pinner_mark_migration_failed_pages(struct list_head *page_list)
{
}
#endif /* CONFIG_PAGE_PINNER */
#endif /* __LINUX_PAGE_PINNER_H */