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author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/include/linux/page_idle.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/include/linux/page_idle.h')
-rw-r--r-- | kernel/include/linux/page_idle.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/kernel/include/linux/page_idle.h b/kernel/include/linux/page_idle.h new file mode 100644 index 000000000..bf268fa92 --- /dev/null +++ b/kernel/include/linux/page_idle.h @@ -0,0 +1,110 @@ +#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); +} + +static inline void set_page_young(struct page *page) +{ + SetPageYoung(page); +} + +static inline bool test_and_clear_page_young(struct page *page) +{ + return TestClearPageYoung(page); +} + +static inline bool page_is_idle(struct page *page) +{ + return PageIdle(page); +} + +static inline void set_page_idle(struct page *page) +{ + SetPageIdle(page); +} + +static inline void clear_page_idle(struct page *page) +{ + ClearPageIdle(page); +} +#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) +{ + return test_bit(PAGE_EXT_YOUNG, &lookup_page_ext(page)->flags); +} + +static inline void set_page_young(struct page *page) +{ + set_bit(PAGE_EXT_YOUNG, &lookup_page_ext(page)->flags); +} + +static inline bool test_and_clear_page_young(struct page *page) +{ + return test_and_clear_bit(PAGE_EXT_YOUNG, + &lookup_page_ext(page)->flags); +} + +static inline bool page_is_idle(struct page *page) +{ + return test_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags); +} + +static inline void set_page_idle(struct page *page) +{ + set_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags); +} + +static inline void clear_page_idle(struct page *page) +{ + clear_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags); +} +#endif /* CONFIG_64BIT */ + +#else /* !CONFIG_IDLE_PAGE_TRACKING */ + +static inline bool page_is_young(struct page *page) +{ + return false; +} + +static inline void set_page_young(struct page *page) +{ +} + +static inline bool test_and_clear_page_young(struct page *page) +{ + return false; +} + +static inline bool page_is_idle(struct page *page) +{ + return false; +} + +static inline void set_page_idle(struct page *page) +{ +} + +static inline void clear_page_idle(struct page *page) +{ +} + +#endif /* CONFIG_IDLE_PAGE_TRACKING */ + +#endif /* _LINUX_MM_PAGE_IDLE_H */ |