From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/page-isolation.h | 76 +++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 kernel/include/linux/page-isolation.h (limited to 'kernel/include/linux/page-isolation.h') diff --git a/kernel/include/linux/page-isolation.h b/kernel/include/linux/page-isolation.h new file mode 100644 index 000000000..2dc1e1697 --- /dev/null +++ b/kernel/include/linux/page-isolation.h @@ -0,0 +1,76 @@ +#ifndef __LINUX_PAGEISOLATION_H +#define __LINUX_PAGEISOLATION_H + +#ifdef CONFIG_MEMORY_ISOLATION +static inline bool has_isolate_pageblock(struct zone *zone) +{ + return zone->nr_isolate_pageblock; +} +static inline bool is_migrate_isolate_page(struct page *page) +{ + return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; +} +static inline bool is_migrate_isolate(int migratetype) +{ + return migratetype == MIGRATE_ISOLATE; +} +#else +static inline bool has_isolate_pageblock(struct zone *zone) +{ + return false; +} +static inline bool is_migrate_isolate_page(struct page *page) +{ + return false; +} +static inline bool is_migrate_isolate(int migratetype) +{ + return false; +} +#endif + +bool has_unmovable_pages(struct zone *zone, struct page *page, int count, + bool skip_hwpoisoned_pages); +void set_pageblock_migratetype(struct page *page, int migratetype); +int move_freepages_block(struct zone *zone, struct page *page, + int migratetype); +int move_freepages(struct zone *zone, + struct page *start_page, struct page *end_page, + int migratetype); + +/* + * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. + * If specified range includes migrate types other than MOVABLE or CMA, + * this will fail with -EBUSY. + * + * For isolating all pages in the range finally, the caller have to + * free all pages in the range. test_page_isolated() can be used for + * test it. + */ +int +start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, + unsigned migratetype, bool skip_hwpoisoned_pages); + +/* + * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. + * target range is [start_pfn, end_pfn) + */ +int +undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, + unsigned migratetype); + +/* + * Test all pages in [start_pfn, end_pfn) are isolated or not. + */ +int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, + bool skip_hwpoisoned_pages); + +/* + * Internal functions. Changes pageblock's migrate type. + */ +int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages); +void unset_migratetype_isolate(struct page *page, unsigned migratetype); +struct page *alloc_migrate_target(struct page *page, unsigned long private, + int **resultp); + +#endif -- cgit 1.2.3-korg