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mm: workingset: per-cgroup cache thrash detection

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Cache thrash detection (see a528910e12 "mm: thrash detection-based
file cache sizing" for details) currently only works on the system
level, not inside cgroups.  Worse, as the refaults are compared to the
global number of active cache, cgroups might wrongfully get all their
refaults activated when their pages are hotter than those of others.

Move the refault machinery from the zone to the lruvec, and then tag
eviction entries with the memcg ID.  This makes the thrash detection
work correctly inside cgroups.

[sergey.senozhatsky@gmail.com: do not return from workingset_activation() with locked rcu and page]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner
2016-03-15 14:57:16 -07:00
committed by Linus Torvalds
parent 612e44939c
commit 23047a96d7
5 changed files with 134 additions and 57 deletions
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13
include/linux/mmzone.h
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@@ -212,10 +212,12 @@ struct zone_reclaim_stat {
};
struct lruvec {
struct list_head lists[NR_LRU_LISTS];
struct zone_reclaim_stat reclaim_stat;
struct list_head lists[NR_LRU_LISTS];
struct zone_reclaim_stat reclaim_stat;
/* Evictions & activations on the inactive file list */
atomic_long_t inactive_age;
#ifdef CONFIG_MEMCG
struct zone *zone;
struct zone *zone;
#endif
};
@@ -490,9 +492,6 @@ struct zone {
spinlock_t lru_lock;
struct lruvec lruvec;
/* Evictions & activations on the inactive file list */
atomic_long_t inactive_age;
/*
* When free pages are below this point, additional steps are taken
* when reading the number of free pages to avoid per-cpu counter
@@ -761,6 +760,8 @@ static inline struct zone *lruvec_zone(struct lruvec *lruvec)
#endif
}
extern unsigned long lruvec_lru_size(struct lruvec *lruvec, enum lru_list lru);
#ifdef CONFIG_HAVE_MEMORY_PRESENT
void memory_present(int nid, unsigned long start, unsigned long end);
#else