The patch titled
memcg: add zone_reclaim_stat
has been added to the -mm tree. Its filename is
memcg-add-zone_reclaim_stat.patch
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------------------------------------------------------
Subject: memcg: add zone_reclaim_stat
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Introduce mem_cgroup_per_zone::reclaim_stat member and its statics
collecting function.
Now, get_scan_ratio() can calculate correct value on memcg reclaim.
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxx>
Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 16 ++++++++++++++++
mm/memcontrol.c | 23 +++++++++++++++++++++++
mm/swap.c | 14 ++++++++++++++
mm/vmscan.c | 27 +++++++++++++--------------
4 files changed, 66 insertions(+), 14 deletions(-)
diff -puN include/linux/memcontrol.h~memcg-add-zone_reclaim_stat include/linux/memcontrol.h
--- a/include/linux/memcontrol.h~memcg-add-zone_reclaim_stat
+++ a/include/linux/memcontrol.h
@@ -105,6 +105,10 @@ int mem_cgroup_inactive_anon_is_low(stru
unsigned long mem_cgroup_zone_nr_pages(struct mem_cgroup *memcg,
struct zone *zone,
enum lru_list lru);
+struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
+ struct zone *zone);
+struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat_by_page(struct page *page);
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
extern int do_swap_account;
@@ -271,6 +275,18 @@ mem_cgroup_zone_nr_pages(struct mem_cgro
}
+static inline struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg, struct zone *zone)
+{
+ return NULL;
+}
+
+static inline struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat_by_page(struct page *page)
+{
+ return NULL;
+}
+
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */
diff -puN mm/memcontrol.c~memcg-add-zone_reclaim_stat mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-add-zone_reclaim_stat
+++ a/mm/memcontrol.c
@@ -103,6 +103,8 @@ struct mem_cgroup_per_zone {
*/
struct list_head lists[NR_LRU_LISTS];
unsigned long count[NR_LRU_LISTS];
+
+ struct zone_reclaim_stat reclaim_stat;
};
/* Macro for accessing counter */
#define MEM_CGROUP_ZSTAT(mz, idx) ((mz)->count[(idx)])
@@ -458,6 +460,27 @@ unsigned long mem_cgroup_zone_nr_pages(s
return MEM_CGROUP_ZSTAT(mz, lru);
}
+struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
+ struct zone *zone)
+{
+ int nid = zone->zone_pgdat->node_id;
+ int zid = zone_idx(zone);
+ struct mem_cgroup_per_zone *mz = mem_cgroup_zoneinfo(memcg, nid, zid);
+
+ return &mz->reclaim_stat;
+}
+
+struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat_by_page(struct page *page)
+{
+ struct page_cgroup *pc = lookup_page_cgroup(page);
+ struct mem_cgroup_per_zone *mz = page_cgroup_zoneinfo(pc);
+
+ if (!mz)
+ return NULL;
+
+ return &mz->reclaim_stat;
+}
+
unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
struct list_head *dst,
unsigned long *scanned, int order,
diff -puN mm/swap.c~memcg-add-zone_reclaim_stat mm/swap.c
--- a/mm/swap.c~memcg-add-zone_reclaim_stat
+++ a/mm/swap.c
@@ -158,6 +158,7 @@ void activate_page(struct page *page)
{
struct zone *zone = page_zone(page);
struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
+ struct zone_reclaim_stat *memcg_reclaim_stat;
spin_lock_irq(&zone->lru_lock);
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
@@ -172,6 +173,12 @@ void activate_page(struct page *page)
reclaim_stat->recent_rotated[!!file]++;
reclaim_stat->recent_scanned[!!file]++;
+
+ memcg_reclaim_stat = mem_cgroup_get_reclaim_stat_by_page(page);
+ if (memcg_reclaim_stat) {
+ memcg_reclaim_stat->recent_rotated[!!file]++;
+ memcg_reclaim_stat->recent_scanned[!!file]++;
+ }
}
spin_unlock_irq(&zone->lru_lock);
}
@@ -400,6 +407,7 @@ void ____pagevec_lru_add(struct pagevec
int i;
struct zone *zone = NULL;
struct zone_reclaim_stat *reclaim_stat = NULL;
+ struct zone_reclaim_stat *memcg_reclaim_stat = NULL;
VM_BUG_ON(is_unevictable_lru(lru));
@@ -413,6 +421,8 @@ void ____pagevec_lru_add(struct pagevec
spin_unlock_irq(&zone->lru_lock);
zone = pagezone;
reclaim_stat = &zone->reclaim_stat;
+ memcg_reclaim_stat =
+ mem_cgroup_get_reclaim_stat_by_page(page);
spin_lock_irq(&zone->lru_lock);
}
VM_BUG_ON(PageActive(page));
@@ -421,9 +431,13 @@ void ____pagevec_lru_add(struct pagevec
SetPageLRU(page);
file = is_file_lru(lru);
reclaim_stat->recent_scanned[file]++;
+ if (memcg_reclaim_stat)
+ memcg_reclaim_stat->recent_scanned[file]++;
if (is_active_lru(lru)) {
SetPageActive(page);
reclaim_stat->recent_rotated[file]++;
+ if (memcg_reclaim_stat)
+ memcg_reclaim_stat->recent_rotated[file]++;
}
add_page_to_lru_list(zone, page, lru);
}
diff -puN mm/vmscan.c~memcg-add-zone_reclaim_stat mm/vmscan.c
--- a/mm/vmscan.c~memcg-add-zone_reclaim_stat
+++ a/mm/vmscan.c
@@ -133,6 +133,9 @@ static DECLARE_RWSEM(shrinker_rwsem);
static struct zone_reclaim_stat *get_reclaim_stat(struct zone *zone,
struct scan_control *sc)
{
+ if (!scan_global_lru(sc))
+ mem_cgroup_get_reclaim_stat(sc->mem_cgroup, zone);
+
return &zone->reclaim_stat;
}
@@ -1134,17 +1137,14 @@ static unsigned long shrink_inactive_lis
__mod_zone_page_state(zone, NR_INACTIVE_ANON,
-count[LRU_INACTIVE_ANON]);
- if (scan_global_lru(sc)) {
+ if (scan_global_lru(sc))
zone->pages_scanned += nr_scan;
- reclaim_stat->recent_scanned[0] +=
- count[LRU_INACTIVE_ANON];
- reclaim_stat->recent_scanned[0] +=
- count[LRU_ACTIVE_ANON];
- reclaim_stat->recent_scanned[1] +=
- count[LRU_INACTIVE_FILE];
- reclaim_stat->recent_scanned[1] +=
- count[LRU_ACTIVE_FILE];
- }
+
+ reclaim_stat->recent_scanned[0] += count[LRU_INACTIVE_ANON];
+ reclaim_stat->recent_scanned[0] += count[LRU_ACTIVE_ANON];
+ reclaim_stat->recent_scanned[1] += count[LRU_INACTIVE_FILE];
+ reclaim_stat->recent_scanned[1] += count[LRU_ACTIVE_FILE];
+
spin_unlock_irq(&zone->lru_lock);
nr_scanned += nr_scan;
@@ -1202,7 +1202,7 @@ static unsigned long shrink_inactive_lis
SetPageLRU(page);
lru = page_lru(page);
add_page_to_lru_list(zone, page, lru);
- if (PageActive(page) && scan_global_lru(sc)) {
+ if (PageActive(page)) {
int file = !!page_is_file_cache(page);
reclaim_stat->recent_rotated[file]++;
}
@@ -1277,8 +1277,8 @@ static void shrink_active_list(unsigned
*/
if (scan_global_lru(sc)) {
zone->pages_scanned += pgscanned;
- reclaim_stat->recent_scanned[!!file] += pgmoved;
}
+ reclaim_stat->recent_scanned[!!file] += pgmoved;
if (file)
__mod_zone_page_state(zone, NR_ACTIVE_FILE, -pgmoved);
@@ -1312,8 +1312,7 @@ static void shrink_active_list(unsigned
* This helps balance scan pressure between file and anonymous
* pages in get_scan_ratio.
*/
- if (scan_global_lru(sc))
- reclaim_stat->recent_rotated[!!file] += pgmoved;
+ reclaim_stat->recent_rotated[!!file] += pgmoved;
/*
* Move the pages to the [file or anon] inactive list.
_
Patches currently in -mm which might be from kamezawa.hiroyu@xxxxxxxxxxxxxx are
vmscan-evict-streaming-io-first.patch
mm-gup-persist-for-write-permission.patch
mm-wp-lock-page-before-deciding-cow.patch
mm-reuse_swap_page-replaces-can_share_swap_page.patch
mm-try_to_free_swap-replaces-remove_exclusive_swap_page.patch
mm-try_to_unuse-check-removing-right-swap.patch
mm-remove-try_to_munlock-from-vmscan.patch
mm-remove-gfp_mask-from-add_to_swap.patch
mm-add-add_to_swap-stub.patch
mm-optimize-get_scan_ratio-for-no-swap.patch
memcg-reclaim-shouldnt-change-zone-recent_rotated-statistics.patch
swapfile-swapon-needs-larger-size-type.patch
swapfile-remove-swp_active-mask.patch
swapfile-remove-surplus-whitespace.patch
swapfile-remove-v0-swap-space-message.patch
swapfile-rearrange-scan-and-swap_info.patch
swapfile-swapon-use-discard-trim.patch
swapfile-swap-allocation-use-discard.patch
swapfile-swapon-randomize-if-nonrot.patch
swapfile-swap-allocation-cycle-if-nonrot.patch
swapfile-change-discard-pgoff_t-to-sector_t.patch
swapfile-change-discard-pgoff_t-to-sector_t-fix.patch
swapfile-let-others-seed-random.patch
cgroups-make-cgroup-config-a-submenu.patch
cgroups-documentation-updates.patch
cgroups-remove-some-redundant-null-checks.patch
ns_cgroup-remove-unused-spinlock.patch
memcg-fix-a-typo-in-kconfig.patch
cgroups-add-lock-for-child-cgroups-in-cgroup_post_fork.patch
cgroups-fix-cgroup_iter_next-bug.patch
cgroups-dont-put-struct-cgroupfs_root-protected-by-rcu.patch
cgroups-use-task_lock-for-access-tsk-cgroups-safe-in-cgroup_clone.patch
cgroups-call-find_css_set-safely-in-cgroup_attach_task.patch
cgroups-remove-rcu_read_lock-in-cgroupstats_build.patch
cgroups-make-root_list-contains-active-hierarchies-only.patch
cgroups-add-inactive-subsystems-to-rootnodesubsys_list.patch
cgroups-introduce-link_css_set-to-remove-duplicate-code.patch
devcgroup-use-list_for_each_entry_rcu.patch
memcg-introduce-charge-commit-cancel-style-of-functions.patch
memcg-introduce-charge-commit-cancel-style-of-functions-fix.patch
memcg-fix-gfp_mask-of-callers-of-charge.patch
memcg-simple-migration-handling.patch
memcg-do-not-recalculate-section-unnecessarily-in-init_section_page_cgroup.patch
memcg-move-all-acccounts-to-parent-at-rmdir.patch
memcg-reduce-size-of-mem_cgroup-by-using-nr_cpu_ids.patch
memcg-new-force_empty-to-free-pages-under-group.patch
memcg-new-force_empty-to-free-pages-under-group-fix.patch
memcg-new-force_empty-to-free-pages-under-group-fix-fix.patch
memcg-handle-swap-caches.patch
memcg-handle-swap-caches-build-fix.patch
memcg-memswap-controller-kconfig.patch
memcg-swap-cgroup-for-remembering-usage.patch
memcg-memswap-controller-core.patch
memcg-memswap-controller-core-make-resize-limit-hold-mutex.patch
memcg-memswap-controller-core-swapcache-fixes.patch
memcg-synchronized-lru.patch
memcg-add-mem_cgroup_disabled.patch
memcg-add-mem_cgroup_disabled-fix.patch
memory-cgroup-hierarchy-documentation-v4.patch
memory-cgroup-resource-counters-for-hierarchy-v4.patch
memory-cgroup-resource-counters-for-hierarchy-v4-checkpatch-fixes.patch
memory-cgroup-hierarchical-reclaim-v4.patch
memory-cgroup-hierarchical-reclaim-v4-checkpatch-fixes.patch
memory-cgroup-hierarchical-reclaim-v4-fix-for-hierarchical-reclaim.patch
memory-cgroup-hierarchy-feature-selector-v4.patch
memory-cgroup-hierarchy-feature-selector-v4-fix.patch
memcontrol-rcu_read_lock-to-protect-mm_match_cgroup.patch
memcg-avoid-unnecessary-system-wide-oom-killer.patch
memcg-avoid-unnecessary-system-wide-oom-killer-fix.patch
memcg-fix-reclaim-result-checks.patch
memcg-revert-gfp-mask-fix.patch
memcg-check-group-leader-fix.patch
memcg-memoryswap-controller-fix-limit-check.patch
memcg-swapout-refcnt-fix.patch
memcg-hierarchy-avoid-unnecessary-reclaim.patch
inactive_anon_is_low-move-to-vmscan.patch
mm-introduce-zone_reclaim-struct.patch
mm-add-zone-nr_pages-helper-function.patch
mm-make-get_scan_ratio-safe-for-memcg.patch
memcg-add-null-check-to-page_cgroup_zoneinfo.patch
memcg-add-inactive_anon_is_low.patch
memcg-add-mem_cgroup_zone_nr_pages.patch
memcg-add-zone_reclaim_stat.patch
memcg-remove-mem_cgroup_cal_reclaim.patch
memcg-show-reclaim-stat.patch
memcg-rename-scan-global-lru.patch
memcg-protect-prev_priority.patch
memcg-swappiness.patch
memcg-explain-details-and-test-document.patch
cpuset-rcu_read_lock-to-protect-task_cs.patch
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