194159fbcc
Several functions test MIGRATE_ISOLATE and some of those are hotpath but MIGRATE_ISOLATE is used only if we enable CONFIG_MEMORY_ISOLATION(ie, CMA, memory-hotplug and memory-failure) which are not common config option. So let's not add unnecessary overhead and code when we don't enable CONFIG_MEMORY_ISOLATION. Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
#ifndef __LINUX_PAGEISOLATION_H
|
|
#define __LINUX_PAGEISOLATION_H
|
|
|
|
#ifdef CONFIG_MEMORY_ISOLATION
|
|
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 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
|