1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __LINUX_PAGEISOLATION_H 3 #define __LINUX_PAGEISOLATION_H 4 5 #ifdef CONFIG_MEMORY_ISOLATION 6 static inline bool has_isolate_pageblock(struct zone *zone) 7 { 8 return zone->nr_isolate_pageblock; 9 } 10 static inline bool is_migrate_isolate_page(struct page *page) 11 { 12 return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; 13 } 14 static inline bool is_migrate_isolate(int migratetype) 15 { 16 return migratetype == MIGRATE_ISOLATE; 17 } 18 #else 19 static inline bool has_isolate_pageblock(struct zone *zone) 20 { 21 return false; 22 } 23 static inline bool is_migrate_isolate_page(struct page *page) 24 { 25 return false; 26 } 27 static inline bool is_migrate_isolate(int migratetype) 28 { 29 return false; 30 } 31 #endif 32 33 #define MEMORY_OFFLINE 0x1 34 #define REPORT_FAILURE 0x2 35 36 void set_pageblock_migratetype(struct page *page, int migratetype); 37 int move_freepages_block(struct zone *zone, struct page *page, 38 int migratetype, int *num_movable); 39 40 /* 41 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. 42 */ 43 int 44 start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, 45 int migratetype, int flags, gfp_t gfp_flags); 46 47 /* 48 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. 49 * target range is [start_pfn, end_pfn) 50 */ 51 void 52 undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, 53 int migratetype); 54 55 /* 56 * Test all pages in [start_pfn, end_pfn) are isolated or not. 57 */ 58 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, 59 int isol_flags); 60 61 struct page *alloc_migrate_target(struct page *page, unsigned long private); 62 63 #endif 64