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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-31 18:09:19 +00:00
mm/memcg: move reclaim_stat into lruvec
With mem_cgroup_disabled() now explicit, it becomes clear that the zone_reclaim_stat structure actually belongs in lruvec, per-zone when memcg is disabled but per-memcg per-zone when it's enabled. We can delete mem_cgroup_get_reclaim_stat(), and change update_page_reclaim_stat() to update just the one set of stats, the one which get_scan_count() will actually use. Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: Glauber Costa <glommer@parallels.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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parent
c3c787e8c3
commit
89abfab133
6 changed files with 30 additions and 62 deletions
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@ -126,8 +126,6 @@ int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg,
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int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
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unsigned long mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg,
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int nid, int zid, unsigned int lrumask);
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struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
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struct zone *zone);
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struct zone_reclaim_stat*
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mem_cgroup_get_reclaim_stat_from_page(struct page *page);
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extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
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@ -356,13 +354,6 @@ mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid,
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return 0;
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}
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static inline struct zone_reclaim_stat*
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mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg, struct zone *zone)
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{
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return NULL;
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}
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static inline struct zone_reclaim_stat*
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mem_cgroup_get_reclaim_stat_from_page(struct page *page)
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{
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@ -185,8 +185,22 @@ static inline int is_unevictable_lru(enum lru_list lru)
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return (lru == LRU_UNEVICTABLE);
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}
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struct zone_reclaim_stat {
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/*
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* The pageout code in vmscan.c keeps track of how many of the
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* mem/swap backed and file backed pages are refeferenced.
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* The higher the rotated/scanned ratio, the more valuable
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* that cache is.
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*
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* The anon LRU stats live in [0], file LRU stats in [1]
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*/
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unsigned long recent_rotated[2];
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unsigned long recent_scanned[2];
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};
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struct lruvec {
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struct list_head lists[NR_LRU_LISTS];
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struct zone_reclaim_stat reclaim_stat;
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};
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/* Mask used at gathering information at once (see memcontrol.c) */
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@ -313,19 +327,6 @@ enum zone_type {
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#error ZONES_SHIFT -- too many zones configured adjust calculation
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#endif
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struct zone_reclaim_stat {
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/*
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* The pageout code in vmscan.c keeps track of how many of the
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* mem/swap backed and file backed pages are refeferenced.
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* The higher the rotated/scanned ratio, the more valuable
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* that cache is.
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*
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* The anon LRU stats live in [0], file LRU stats in [1]
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*/
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unsigned long recent_rotated[2];
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unsigned long recent_scanned[2];
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};
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struct zone {
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/* Fields commonly accessed by the page allocator */
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@ -407,8 +408,6 @@ struct zone {
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spinlock_t lru_lock;
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struct lruvec lruvec;
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struct zone_reclaim_stat reclaim_stat;
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unsigned long pages_scanned; /* since last reclaim */
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unsigned long flags; /* zone flags, see below */
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@ -138,7 +138,6 @@ struct mem_cgroup_per_zone {
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struct mem_cgroup_reclaim_iter reclaim_iter[DEF_PRIORITY + 1];
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struct zone_reclaim_stat reclaim_stat;
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struct rb_node tree_node; /* RB tree node */
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unsigned long long usage_in_excess;/* Set to the value by which */
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/* the soft limit is exceeded*/
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@ -1243,16 +1242,6 @@ int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone)
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return (active > inactive);
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}
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struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
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struct zone *zone)
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{
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int nid = zone_to_nid(zone);
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int zid = zone_idx(zone);
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struct mem_cgroup_per_zone *mz = mem_cgroup_zoneinfo(memcg, nid, zid);
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return &mz->reclaim_stat;
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}
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struct zone_reclaim_stat *
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mem_cgroup_get_reclaim_stat_from_page(struct page *page)
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{
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@ -1268,7 +1257,7 @@ mem_cgroup_get_reclaim_stat_from_page(struct page *page)
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/* Ensure pc->mem_cgroup is visible after reading PCG_USED. */
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smp_rmb();
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mz = page_cgroup_zoneinfo(pc->mem_cgroup, page);
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return &mz->reclaim_stat;
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return &mz->lruvec.reclaim_stat;
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}
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#define mem_cgroup_from_res_counter(counter, member) \
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@ -4216,21 +4205,19 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
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{
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int nid, zid;
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struct mem_cgroup_per_zone *mz;
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struct zone_reclaim_stat *rstat;
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unsigned long recent_rotated[2] = {0, 0};
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unsigned long recent_scanned[2] = {0, 0};
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for_each_online_node(nid)
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for (zid = 0; zid < MAX_NR_ZONES; zid++) {
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mz = mem_cgroup_zoneinfo(memcg, nid, zid);
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rstat = &mz->lruvec.reclaim_stat;
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recent_rotated[0] +=
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mz->reclaim_stat.recent_rotated[0];
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recent_rotated[1] +=
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mz->reclaim_stat.recent_rotated[1];
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recent_scanned[0] +=
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mz->reclaim_stat.recent_scanned[0];
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recent_scanned[1] +=
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mz->reclaim_stat.recent_scanned[1];
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recent_rotated[0] += rstat->recent_rotated[0];
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recent_rotated[1] += rstat->recent_rotated[1];
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recent_scanned[0] += rstat->recent_scanned[0];
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recent_scanned[1] += rstat->recent_scanned[1];
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}
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cb->fill(cb, "recent_rotated_anon", recent_rotated[0]);
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cb->fill(cb, "recent_rotated_file", recent_rotated[1]);
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@ -4410,10 +4410,10 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
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zone_pcp_init(zone);
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for_each_lru(lru)
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INIT_LIST_HEAD(&zone->lruvec.lists[lru]);
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zone->reclaim_stat.recent_rotated[0] = 0;
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zone->reclaim_stat.recent_rotated[1] = 0;
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zone->reclaim_stat.recent_scanned[0] = 0;
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zone->reclaim_stat.recent_scanned[1] = 0;
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zone->lruvec.reclaim_stat.recent_rotated[0] = 0;
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zone->lruvec.reclaim_stat.recent_rotated[1] = 0;
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zone->lruvec.reclaim_stat.recent_scanned[0] = 0;
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zone->lruvec.reclaim_stat.recent_scanned[1] = 0;
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zap_zone_vm_stats(zone);
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zone->flags = 0;
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if (!size)
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14
mm/swap.c
14
mm/swap.c
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@ -312,21 +312,15 @@ void rotate_reclaimable_page(struct page *page)
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static void update_page_reclaim_stat(struct zone *zone, struct page *page,
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int file, int rotated)
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{
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struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
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struct zone_reclaim_stat *memcg_reclaim_stat;
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struct zone_reclaim_stat *reclaim_stat;
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memcg_reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page);
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reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page);
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if (!reclaim_stat)
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reclaim_stat = &zone->lruvec.reclaim_stat;
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reclaim_stat->recent_scanned[file]++;
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if (rotated)
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reclaim_stat->recent_rotated[file]++;
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if (!memcg_reclaim_stat)
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return;
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memcg_reclaim_stat->recent_scanned[file]++;
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if (rotated)
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memcg_reclaim_stat->recent_rotated[file]++;
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}
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static void __activate_page(struct page *page, void *arg)
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@ -149,10 +149,7 @@ static bool global_reclaim(struct scan_control *sc)
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static struct zone_reclaim_stat *get_reclaim_stat(struct mem_cgroup_zone *mz)
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{
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if (!mem_cgroup_disabled())
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return mem_cgroup_get_reclaim_stat(mz->mem_cgroup, mz->zone);
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return &mz->zone->reclaim_stat;
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return &mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup)->reclaim_stat;
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}
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static unsigned long zone_nr_lru_pages(struct mem_cgroup_zone *mz,
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