diff options
| -rw-r--r-- | include/linux/vm_event_item.h | 4 | ||||
| -rw-r--r-- | mm/vmscan.c | 15 | ||||
| -rw-r--r-- | mm/vmstat.c | 3 |
3 files changed, 18 insertions, 4 deletions
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 1798ff5..4d6ec58 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -23,6 +23,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, FOR_ALL_ZONES(PGALLOC), + FOR_ALL_ZONES(ALLOCSTALL), + FOR_ALL_ZONES(PGSCAN_SKIP), PGFREE, PGACTIVATE, PGDEACTIVATE, PGFAULT, PGMAJFAULT, PGLAZYFREED, @@ -37,7 +39,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #endif PGINODESTEAL, SLABS_SCANNED, KSWAPD_INODESTEAL, KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY, - PAGEOUTRUN, ALLOCSTALL, PGROTATED, + PAGEOUTRUN, PGROTATED, DROP_PAGECACHE, DROP_SLAB, #ifdef CONFIG_NUMA_BALANCING NUMA_PTE_UPDATES, diff --git a/mm/vmscan.c b/mm/vmscan.c index 5eaf83b..d5ee6d9 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1394,6 +1394,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, struct list_head *src = &lruvec->lists[lru]; unsigned long nr_taken = 0; unsigned long nr_zone_taken[MAX_NR_ZONES] = { 0 }; + unsigned long nr_skipped[MAX_NR_ZONES] = { 0, }; unsigned long scan, nr_pages; LIST_HEAD(pages_skipped); @@ -1408,6 +1409,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, if (page_zonenum(page) > sc->reclaim_idx) { list_move(&page->lru, &pages_skipped); + nr_skipped[page_zonenum(page)]++; continue; } @@ -1436,8 +1438,17 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, * scanning would soon rescan the same pages to skip and put the * system at risk of premature OOM. */ - if (!list_empty(&pages_skipped)) + if (!list_empty(&pages_skipped)) { + int zid; + list_splice(&pages_skipped, src); + for (zid = 0; zid < MAX_NR_ZONES; zid++) { + if (!nr_skipped[zid]) + continue; + + __count_zid_vm_events(PGSCAN_SKIP, zid, nr_skipped[zid]); + } + } *nr_scanned = scan; trace_mm_vmscan_lru_isolate(sc->reclaim_idx, sc->order, nr_to_scan, scan, nr_taken, mode, is_file_lru(lru)); @@ -2680,7 +2691,7 @@ retry: delayacct_freepages_start(); if (global_reclaim(sc)) - count_vm_event(ALLOCSTALL); + __count_zid_vm_events(ALLOCSTALL, sc->reclaim_idx, 1); do { vmpressure_prio(sc->gfp_mask, sc->target_mem_cgroup, diff --git a/mm/vmstat.c b/mm/vmstat.c index ab7f789..5caaf3f 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -983,6 +983,8 @@ const char * const vmstat_text[] = { "pswpout", TEXTS_FOR_ZONES("pgalloc") + TEXTS_FOR_ZONES("allocstall") + TEXTS_FOR_ZONES("pgskip") "pgfree", "pgactivate", @@ -1008,7 +1010,6 @@ const char * const vmstat_text[] = { "kswapd_low_wmark_hit_quickly", "kswapd_high_wmark_hit_quickly", "pageoutrun", - "allocstall", "pgrotated", |
