Release 4.7 include/linux/page_idle.h
#ifndef _LINUX_MM_PAGE_IDLE_H
#define _LINUX_MM_PAGE_IDLE_H
#include <linux/bitops.h>
#include <linux/page-flags.h>
#include <linux/page_ext.h>
#ifdef CONFIG_IDLE_PAGE_TRACKING
#ifdef CONFIG_64BIT
static inline bool page_is_young(struct page *page)
{
return PageYoung(page);
}
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static inline void set_page_young(struct page *page)
{
SetPageYoung(page);
}
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static inline bool test_and_clear_page_young(struct page *page)
{
return TestClearPageYoung(page);
}
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static inline bool page_is_idle(struct page *page)
{
return PageIdle(page);
}
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static inline void set_page_idle(struct page *page)
{
SetPageIdle(page);
}
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static inline void clear_page_idle(struct page *page)
{
ClearPageIdle(page);
}
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#else /* !CONFIG_64BIT */
/*
* If there is not enough space to store Idle and Young bits in page flags, use
* page ext flags instead.
*/
extern struct page_ext_operations page_idle_ops;
static inline bool page_is_young(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return false;
return test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
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static inline void set_page_young(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return;
set_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
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static inline bool test_and_clear_page_young(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return false;
return test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);
}
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static inline bool page_is_idle(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return false;
return test_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
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static inline void set_page_idle(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return;
set_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
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| Total | 41 | 100.00% | 2 | 100.00% |
static inline void clear_page_idle(struct page *page)
{
struct page_ext *page_ext = lookup_page_ext(page);
if (unlikely(!page_ext))
return;
clear_bit(PAGE_EXT_IDLE, &page_ext->flags);
}
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| Total | 41 | 100.00% | 2 | 100.00% |
#endif /* CONFIG_64BIT */
#else /* !CONFIG_IDLE_PAGE_TRACKING */
static inline bool page_is_young(struct page *page)
{
return false;
}
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| vladimir davydov | vladimir davydov | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
static inline void set_page_young(struct page *page)
{
}
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| vladimir davydov | vladimir davydov | 11 | 100.00% | 1 | 100.00% |
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static inline bool test_and_clear_page_young(struct page *page)
{
return false;
}
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| vladimir davydov | vladimir davydov | 15 | 100.00% | 1 | 100.00% |
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static inline bool page_is_idle(struct page *page)
{
return false;
}
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| vladimir davydov | vladimir davydov | 15 | 100.00% | 1 | 100.00% |
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static inline void set_page_idle(struct page *page)
{
}
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| vladimir davydov | vladimir davydov | 11 | 100.00% | 1 | 100.00% |
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static inline void clear_page_idle(struct page *page)
{
}
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#endif /* CONFIG_IDLE_PAGE_TRACKING */
#endif /* _LINUX_MM_PAGE_IDLE_H */
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| Total | 480 | 100.00% | 2 | 100.00% |
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