summaryrefslogtreecommitdiff
path: root/include/linux/memcontrol.h
diff options
context:
space:
mode:
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 /include/linux/memcontrol.h
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 'include/linux/memcontrol.h')
-rw-r--r--include/linux/memcontrol.h48
1 files changed, 45 insertions, 3 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 899949bbb2f9..b2a5b1cd4e55 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -357,6 +357,17 @@ static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg)
}
struct mem_cgroup *mem_cgroup_from_id(unsigned short id);
+static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec)
+{
+ struct mem_cgroup_per_node *mz;
+
+ if (mem_cgroup_disabled())
+ return NULL;
+
+ mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec);
+ return mz->memcg;
+}
+
/**
* parent_mem_cgroup - find the accounting parent of a memcg
* @memcg: memcg whose parent to find
@@ -546,8 +557,23 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
gfp_t gfp_mask,
unsigned long *total_scanned);
-static inline void mem_cgroup_count_vm_event(struct mm_struct *mm,
- enum vm_event_item idx)
+static inline void count_memcg_events(struct mem_cgroup *memcg,
+ enum vm_event_item idx,
+ unsigned long count)
+{
+ if (!mem_cgroup_disabled())
+ this_cpu_add(memcg->stat->events[idx], count);
+}
+
+static inline void count_memcg_page_event(struct page *page,
+ enum memcg_stat_item idx)
+{
+ if (page->mem_cgroup)
+ count_memcg_events(page->mem_cgroup, idx, 1);
+}
+
+static inline void count_memcg_event_mm(struct mm_struct *mm,
+ enum vm_event_item idx)
{
struct mem_cgroup *memcg;
@@ -675,6 +701,11 @@ static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id)
return NULL;
}
+static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec)
+{
+ return NULL;
+}
+
static inline bool mem_cgroup_online(struct mem_cgroup *memcg)
{
return true;
@@ -789,8 +820,19 @@ static inline void mem_cgroup_split_huge_fixup(struct page *head)
{
}
+static inline void count_memcg_events(struct mem_cgroup *memcg,
+ enum vm_event_item idx,
+ unsigned long count)
+{
+}
+
+static inline void count_memcg_page_event(struct page *page,
+ enum memcg_stat_item idx)
+{
+}
+
static inline
-void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx)
+void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx)
{
}
#endif /* CONFIG_MEMCG */