Line data    Source code

       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       15316 : static inline bool has_isolate_pageblock(struct zone *zone)
      20             : {
      21         357 :         return false;
      22             : }
      23             : static inline bool is_migrate_isolate_page(struct page *page)
      24             : {
      25             :         return false;
      26             : }
      27       74900 : static inline bool is_migrate_isolate(int migratetype)
      28             : {
      29       74900 :         return false;
      30             : }
      31             : #endif
      32             : 
      33             : #define MEMORY_OFFLINE  0x1
      34             : #define REPORT_FAILURE  0x2
      35             : 
      36             : struct page *has_unmovable_pages(struct zone *zone, struct page *page,
      37             :                                  int migratetype, int flags);
      38             : void set_pageblock_migratetype(struct page *page, int migratetype);
      39             : int move_freepages_block(struct zone *zone, struct page *page,
      40             :                                 int migratetype, int *num_movable);
      41             : 
      42             : /*
      43             :  * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
      44             :  */
      45             : int
      46             : start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
      47             :                          unsigned migratetype, int flags);
      48             : 
      49             : /*
      50             :  * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
      51             :  * target range is [start_pfn, end_pfn)
      52             :  */
      53             : void
      54             : undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
      55             :                         unsigned migratetype);
      56             : 
      57             : /*
      58             :  * Test all pages in [start_pfn, end_pfn) are isolated or not.
      59             :  */
      60             : int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
      61             :                         int isol_flags);
      62             : 
      63             : struct page *alloc_migrate_target(struct page *page, unsigned long private);
      64             : 
      65             : #endif