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authorMel Gorman <mgorman@suse.de>2015-04-14 15:48:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 16:49:05 -0700
commit2a8e70026435ad97570a1e0a0c4c941e0f700a3e (patch)
tree7dc9ef728a6819656ed6c54355322b91c2dd020e
parent204db6ed17743000691d930368a5abd6ea541c58 (diff)
mm: numa: remove migrate_ratelimited
This code is dead since commit 9e645ab6d089 ("sched/numa: Continue PTE scanning even if migrate rate limited") so remove it. Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/migrate.h5
-rw-r--r--mm/migrate.c20
2 files changed, 0 insertions, 25 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 78baed5f2952..cac1c0904d5f 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -69,7 +69,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
extern bool pmd_trans_migrating(pmd_t pmd);
extern int migrate_misplaced_page(struct page *page,
struct vm_area_struct *vma, int node);
-extern bool migrate_ratelimited(int node);
#else
static inline bool pmd_trans_migrating(pmd_t pmd)
{
@@ -80,10 +79,6 @@ static inline int migrate_misplaced_page(struct page *page,
{
return -EAGAIN; /* can't migrate now */
}
-static inline bool migrate_ratelimited(int node)
-{
- return false;
-}
#endif /* CONFIG_NUMA_BALANCING */
#if defined(CONFIG_NUMA_BALANCING) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
diff --git a/mm/migrate.c b/mm/migrate.c
index ec1802d85f05..a65ff72ab739 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1565,30 +1565,10 @@ static struct page *alloc_misplaced_dst_page(struct page *page,
* page migration rate limiting control.
* Do not migrate more than @pages_to_migrate in a @migrate_interval_millisecs
* window of time. Default here says do not migrate more than 1280M per second.
- * If a node is rate-limited then PTE NUMA updates are also rate-limited. However
- * as it is faults that reset the window, pte updates will happen unconditionally
- * if there has not been a fault since @pteupdate_interval_millisecs after the
- * throttle window closed.
*/
static unsigned int migrate_interval_millisecs __read_mostly = 100;
-static unsigned int pteupdate_interval_millisecs __read_mostly = 1000;
static unsigned int ratelimit_pages __read_mostly = 128 << (20 - PAGE_SHIFT);
-/* Returns true if NUMA migration is currently rate limited */
-bool migrate_ratelimited(int node)
-{
- pg_data_t *pgdat = NODE_DATA(node);
-
- if (time_after(jiffies, pgdat->numabalancing_migrate_next_window +
- msecs_to_jiffies(pteupdate_interval_millisecs)))
- return false;
-
- if (pgdat->numabalancing_migrate_nr_pages < ratelimit_pages)
- return false;
-
- return true;
-}
-
/* Returns true if the node is migrate rate-limited after the update */
static bool numamigrate_update_ratelimit(pg_data_t *pgdat,
unsigned long nr_pages)