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authorRoman Gushchin <guro@fb.com>2017-07-07 01:40:25 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-07 02:24:35 +0300
commit2262185c5b287f2758afda79c149b7cf6bee165c (patch)
tree4451ec80c3515ed5e4b93e4b2e5bd78661e0a5a9 /mm
parent94f4a1618b4c2b268f9e70bd1516932927782293 (diff)
downloadlinux-2262185c5b287f2758afda79c149b7cf6bee165c.tar.xz
mm: per-cgroup memory reclaim stats
Track the following reclaim counters for every memory cgroup: PGREFILL, PGSCAN, PGSTEAL, PGACTIVATE, PGDEACTIVATE, PGLAZYFREE and PGLAZYFREED. These values are exposed using the memory.stats interface of cgroup v2. The meaning of each value is the same as for global counters, available using /proc/vmstat. Also, for consistency, rename mem_cgroup_count_vm_event() to count_memcg_event_mm(). Link: http://lkml.kernel.org/r/1494530183-30808-1-git-send-email-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/filemap.c2
-rw-r--r--mm/memcontrol.c10
-rw-r--r--mm/memory.c4
-rw-r--r--mm/shmem.c3
-rw-r--r--mm/swap.c1
-rw-r--r--mm/vmscan.c30
6 files changed, 38 insertions, 12 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index aea58e983a73..2e906ef52143 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2265,7 +2265,7 @@ int filemap_fault(struct vm_fault *vmf)
/* No page in the page cache at all */
do_sync_mmap_readahead(vmf->vma, ra, file, offset);
count_vm_event(PGMAJFAULT);
- mem_cgroup_count_vm_event(vmf->vma->vm_mm, PGMAJFAULT);
+ count_memcg_event_mm(vmf->vma->vm_mm, PGMAJFAULT);
ret = VM_FAULT_MAJOR;
retry_find:
page = find_get_page(mapping, offset);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index fc51a33ddcd1..3e2f8cf85b4c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5230,6 +5230,16 @@ static int memory_stat_show(struct seq_file *m, void *v)
seq_printf(m, "pgfault %lu\n", events[PGFAULT]);
seq_printf(m, "pgmajfault %lu\n", events[PGMAJFAULT]);
+ seq_printf(m, "pgrefill %lu\n", events[PGREFILL]);
+ seq_printf(m, "pgscan %lu\n", events[PGSCAN_KSWAPD] +
+ events[PGSCAN_DIRECT]);
+ seq_printf(m, "pgsteal %lu\n", events[PGSTEAL_KSWAPD] +
+ events[PGSTEAL_DIRECT]);
+ seq_printf(m, "pgactivate %lu\n", events[PGACTIVATE]);
+ seq_printf(m, "pgdeactivate %lu\n", events[PGDEACTIVATE]);
+ seq_printf(m, "pglazyfree %lu\n", events[PGLAZYFREE]);
+ seq_printf(m, "pglazyfreed %lu\n", events[PGLAZYFREED]);
+
seq_printf(m, "workingset_refault %lu\n",
stat[WORKINGSET_REFAULT]);
seq_printf(m, "workingset_activate %lu\n",
diff --git a/mm/memory.c b/mm/memory.c
index bf3aab1684e9..e31dd97e6114 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2719,7 +2719,7 @@ int do_swap_page(struct vm_fault *vmf)
/* Had to read the page from swap area: Major fault */
ret = VM_FAULT_MAJOR;
count_vm_event(PGMAJFAULT);
- mem_cgroup_count_vm_event(vma->vm_mm, PGMAJFAULT);
+ count_memcg_event_mm(vma->vm_mm, PGMAJFAULT);
} else if (PageHWPoison(page)) {
/*
* hwpoisoned dirty swapcache pages are kept for killing
@@ -3837,7 +3837,7 @@ int handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
__set_current_state(TASK_RUNNING);
count_vm_event(PGFAULT);
- mem_cgroup_count_vm_event(vma->vm_mm, PGFAULT);
+ count_memcg_event_mm(vma->vm_mm, PGFAULT);
/* do counter updates before entering really critical section. */
check_sync_rss_stat(current);
diff --git a/mm/shmem.c b/mm/shmem.c
index a06f23731d3f..9418f5a9bc46 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1646,8 +1646,7 @@ repeat:
if (fault_type) {
*fault_type |= VM_FAULT_MAJOR;
count_vm_event(PGMAJFAULT);
- mem_cgroup_count_vm_event(charge_mm,
- PGMAJFAULT);
+ count_memcg_event_mm(charge_mm, PGMAJFAULT);
}
/* Here we actually start the io */
page = shmem_swapin(swap, gfp, info, index);
diff --git a/mm/swap.c b/mm/swap.c
index 98d08b4579fa..4f44dbd7f780 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -591,6 +591,7 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec,
add_page_to_lru_list(page, lruvec, LRU_INACTIVE_FILE);
__count_vm_events(PGLAZYFREE, hpage_nr_pages(page));
+ count_memcg_page_event(page, PGLAZYFREE);
update_page_reclaim_stat(lruvec, 1, 0);
}
}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index aebb157258f2..7d3c6c59897c 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1294,6 +1294,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
}
count_vm_event(PGLAZYFREED);
+ count_memcg_page_event(page, PGLAZYFREED);
} else if (!mapping || !__remove_mapping(mapping, page, true))
goto keep_locked;
/*
@@ -1323,6 +1324,7 @@ activate_locked:
if (!PageMlocked(page)) {
SetPageActive(page);
pgactivate++;
+ count_memcg_page_event(page, PGACTIVATE);
}
keep_locked:
unlock_page(page);
@@ -1762,11 +1764,16 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
__mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);
reclaim_stat->recent_scanned[file] += nr_taken;
- if (global_reclaim(sc)) {
- if (current_is_kswapd())
+ if (current_is_kswapd()) {
+ if (global_reclaim(sc))
__count_vm_events(PGSCAN_KSWAPD, nr_scanned);
- else
+ count_memcg_events(lruvec_memcg(lruvec), PGSCAN_KSWAPD,
+ nr_scanned);
+ } else {
+ if (global_reclaim(sc))
__count_vm_events(PGSCAN_DIRECT, nr_scanned);
+ count_memcg_events(lruvec_memcg(lruvec), PGSCAN_DIRECT,
+ nr_scanned);
}
spin_unlock_irq(&pgdat->lru_lock);
@@ -1778,11 +1785,16 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
spin_lock_irq(&pgdat->lru_lock);
- if (global_reclaim(sc)) {
- if (current_is_kswapd())
+ if (current_is_kswapd()) {
+ if (global_reclaim(sc))
__count_vm_events(PGSTEAL_KSWAPD, nr_reclaimed);
- else
+ count_memcg_events(lruvec_memcg(lruvec), PGSTEAL_KSWAPD,
+ nr_reclaimed);
+ } else {
+ if (global_reclaim(sc))
__count_vm_events(PGSTEAL_DIRECT, nr_reclaimed);
+ count_memcg_events(lruvec_memcg(lruvec), PGSTEAL_DIRECT,
+ nr_reclaimed);
}
putback_inactive_pages(lruvec, &page_list);
@@ -1927,8 +1939,11 @@ static unsigned move_active_pages_to_lru(struct lruvec *lruvec,
}
}
- if (!is_active_lru(lru))
+ if (!is_active_lru(lru)) {
__count_vm_events(PGDEACTIVATE, nr_moved);
+ count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE,
+ nr_moved);
+ }
return nr_moved;
}
@@ -1966,6 +1981,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
reclaim_stat->recent_scanned[file] += nr_taken;
__count_vm_events(PGREFILL, nr_scanned);
+ count_memcg_events(lruvec_memcg(lruvec), PGREFILL, nr_scanned);
spin_unlock_irq(&pgdat->lru_lock);