diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 532a2a750952..a34bf51d68e2 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1855,9 +1855,11 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, * * The downside is that we have to touch page->_refcount against each page. * But we had to alter page->flags anyway. + * + * Returns the number of pages moved to the given lru. */ -static void move_active_pages_to_lru(struct lruvec *lruvec, +static unsigned move_active_pages_to_lru(struct lruvec *lruvec, struct list_head *list, struct list_head *pages_to_free, enum lru_list lru) @@ -1866,6 +1868,7 @@ static void move_active_pages_to_lru(struct lruvec *lruvec, unsigned long pgmoved = 0; struct page *page; int nr_pages; + int nr_moved = 0; while (!list_empty(list)) { page = lru_to_page(list); @@ -1891,11 +1894,15 @@ static void move_active_pages_to_lru(struct lruvec *lruvec, spin_lock_irq(&pgdat->lru_lock); } else list_add(&page->lru, pages_to_free); + } else { + nr_moved += nr_pages; } } if (!is_active_lru(lru)) __count_vm_events(PGDEACTIVATE, pgmoved); + + return nr_moved; } static void shrink_active_list(unsigned long nr_to_scan, @@ -1911,7 +1918,8 @@ static void shrink_active_list(unsigned long nr_to_scan, LIST_HEAD(l_inactive); struct page *page; struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat; - unsigned long nr_rotated = 0; + unsigned nr_deactivate, nr_activate; + unsigned nr_rotated = 0; isolate_mode_t isolate_mode = 0; int file = is_file_lru(lru); struct pglist_data *pgdat = lruvec_pgdat(lruvec); @@ -1989,13 +1997,15 @@ static void shrink_active_list(unsigned long nr_to_scan, */ reclaim_stat->recent_rotated[file] += nr_rotated; - move_active_pages_to_lru(lruvec, &l_active, &l_hold, lru); - move_active_pages_to_lru(lruvec, &l_inactive, &l_hold, lru - LRU_ACTIVE); + nr_activate = move_active_pages_to_lru(lruvec, &l_active, &l_hold, lru); + nr_deactivate = move_active_pages_to_lru(lruvec, &l_inactive, &l_hold, lru - LRU_ACTIVE); __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken); spin_unlock_irq(&pgdat->lru_lock); mem_cgroup_uncharge_list(&l_hold); free_hot_cold_page_list(&l_hold, true); + trace_mm_vmscan_lru_shrink_active(pgdat->node_id, nr_taken, nr_activate, + nr_deactivate, nr_rotated, sc->priority, file); } /* |