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Message-ID: <20e89d29d24b10f850128963e731529ce7869392.1485748619.git.shli@fb.com>
Date: Sun, 29 Jan 2017 21:51:18 -0800
From: Shaohua Li <shli@...com>
To: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
CC: <Kernel-team@...com>, <mhocko@...e.com>, <minchan@...nel.org>,
<hughd@...gle.com>, <hannes@...xchg.org>, <riel@...hat.com>,
<mgorman@...hsingularity.net>
Subject: [RFC 1/6] mm: add wrap for page accouting index
We calculate page/lru accouting index with checking if the page/lru is
file. This will be a problem when we introduce a new LRU list. So add a
wrap for the calculation.
The patch is based on Minchan's previous patch.
Cc: Michal Hocko <mhocko@...e.com>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Rik van Riel <riel@...hat.com>
Cc: Mel Gorman <mgorman@...hsingularity.net>
Signed-off-by: Shaohua Li <shli@...com>
---
include/linux/mm_inline.h | 26 ++++++++++++++++++++++++++
include/trace/events/vmscan.h | 23 ++++++++++++-----------
mm/compaction.c | 3 +--
mm/khugepaged.c | 6 ++----
mm/memory-failure.c | 3 +--
mm/memory_hotplug.c | 3 +--
mm/mempolicy.c | 3 +--
mm/migrate.c | 27 +++++++++------------------
mm/vmscan.c | 19 ++++++++++---------
9 files changed, 63 insertions(+), 50 deletions(-)
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index e030a68..0dddc2c 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -124,6 +124,32 @@ static __always_inline enum lru_list page_lru(struct page *page)
return lru;
}
+/*
+ * lru_isolate_index - which item should a lru be accounted for
+ * @lru: the lru list
+ *
+ * Returns the accounting item index of the lru
+ */
+static inline int lru_isolate_index(enum lru_list lru)
+{
+ if (lru == LRU_INACTIVE_FILE || lru == LRU_ACTIVE_FILE)
+ return NR_ISOLATED_FILE;
+ return NR_ISOLATED_ANON;
+}
+
+/*
+ * page_isolate_index - which item should a page be accounted for
+ * @page: the page to test
+ *
+ * Returns the accounting item index of the page
+ */
+static inline int page_isolate_index(struct page *page)
+{
+ if (!PageSwapBacked(page))
+ return NR_ISOLATED_FILE;
+ return NR_ISOLATED_ANON;
+}
+
#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
#endif
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 27e8a5c..fab386d 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -31,9 +31,10 @@
(RECLAIM_WB_ASYNC) \
)
-#define trace_shrink_flags(file) \
+#define trace_shrink_flags(isolate_index) \
( \
- (file ? RECLAIM_WB_FILE : RECLAIM_WB_ANON) | \
+ (isolate_index == NR_ISOLATED_FILE ? RECLAIM_WB_FILE : \
+ RECLAIM_WB_ANON) | \
(RECLAIM_WB_ASYNC) \
)
@@ -345,11 +346,11 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
unsigned long nr_congested, unsigned long nr_immediate,
unsigned long nr_activate, unsigned long nr_ref_keep,
unsigned long nr_unmap_fail,
- int priority, int file),
+ int priority, int isolate_index),
TP_ARGS(nid, nr_scanned, nr_reclaimed, nr_dirty, nr_writeback,
nr_congested, nr_immediate, nr_activate, nr_ref_keep,
- nr_unmap_fail, priority, file),
+ nr_unmap_fail, priority, isolate_index),
TP_STRUCT__entry(
__field(int, nid)
@@ -378,7 +379,7 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
__entry->nr_ref_keep = nr_ref_keep;
__entry->nr_unmap_fail = nr_unmap_fail;
__entry->priority = priority;
- __entry->reclaim_flags = trace_shrink_flags(file);
+ __entry->reclaim_flags = trace_shrink_flags(isolate_index);
),
TP_printk("nid=%d nr_scanned=%ld nr_reclaimed=%ld nr_dirty=%ld nr_writeback=%ld nr_congested=%ld nr_immediate=%ld nr_activate=%ld nr_ref_keep=%ld nr_unmap_fail=%ld priority=%d flags=%s",
@@ -395,9 +396,9 @@ TRACE_EVENT(mm_vmscan_lru_shrink_active,
TP_PROTO(int nid, unsigned long nr_taken,
unsigned long nr_active, unsigned long nr_deactivated,
- unsigned long nr_referenced, int priority, int file),
+ unsigned long nr_referenced, int priority, int isolate_index),
- TP_ARGS(nid, nr_taken, nr_active, nr_deactivated, nr_referenced, priority, file),
+ TP_ARGS(nid, nr_taken, nr_active, nr_deactivated, nr_referenced, priority, isolate_index),
TP_STRUCT__entry(
__field(int, nid)
@@ -416,7 +417,7 @@ TRACE_EVENT(mm_vmscan_lru_shrink_active,
__entry->nr_deactivated = nr_deactivated;
__entry->nr_referenced = nr_referenced;
__entry->priority = priority;
- __entry->reclaim_flags = trace_shrink_flags(file);
+ __entry->reclaim_flags = trace_shrink_flags(isolate_index);
),
TP_printk("nid=%d nr_taken=%ld nr_active=%ld nr_deactivated=%ld nr_referenced=%ld priority=%d flags=%s",
@@ -432,9 +433,9 @@ TRACE_EVENT(mm_vmscan_inactive_list_is_low,
TP_PROTO(int nid, int reclaim_idx,
unsigned long total_inactive, unsigned long inactive,
unsigned long total_active, unsigned long active,
- unsigned long ratio, int file),
+ unsigned long ratio, int isolate_index),
- TP_ARGS(nid, reclaim_idx, total_inactive, inactive, total_active, active, ratio, file),
+ TP_ARGS(nid, reclaim_idx, total_inactive, inactive, total_active, active, ratio, isolate_index),
TP_STRUCT__entry(
__field(int, nid)
@@ -455,7 +456,7 @@ TRACE_EVENT(mm_vmscan_inactive_list_is_low,
__entry->total_active = total_active;
__entry->active = active;
__entry->ratio = ratio;
- __entry->reclaim_flags = trace_shrink_flags(file) & RECLAIM_WB_LRU;
+ __entry->reclaim_flags = trace_shrink_flags(isolate_index) & RECLAIM_WB_LRU;
),
TP_printk("nid=%d reclaim_idx=%d total_inactive=%ld inactive=%ld total_active=%ld active=%ld ratio=%ld flags=%s",
diff --git a/mm/compaction.c b/mm/compaction.c
index 0aa2757..3918c48 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -857,8 +857,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
/* Successfully isolated */
del_page_from_lru_list(page, lruvec, page_lru(page));
- inc_node_page_state(page,
- NR_ISOLATED_ANON + page_is_file_cache(page));
+ inc_node_page_state(page, page_isolate_index(page));
isolate_success:
list_add(&page->lru, &cc->migratepages);
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 34bce5c..fd43a0a 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -481,8 +481,7 @@ void __khugepaged_exit(struct mm_struct *mm)
static void release_pte_page(struct page *page)
{
- /* 0 stands for page_is_file_cache(page) == false */
- dec_node_page_state(page, NR_ISOLATED_ANON + 0);
+ dec_node_page_state(page, page_isolate_index(page));
unlock_page(page);
putback_lru_page(page);
}
@@ -577,8 +576,7 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
result = SCAN_DEL_PAGE_LRU;
goto out;
}
- /* 0 stands for page_is_file_cache(page) == false */
- inc_node_page_state(page, NR_ISOLATED_ANON + 0);
+ inc_node_page_state(page, page_isolate_index(page));
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageLRU(page), page);
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 3f3cfd4..695ecb72 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1667,8 +1667,7 @@ static int __soft_offline_page(struct page *page, int flags)
* cannot have PAGE_MAPPING_MOVABLE.
*/
if (!__PageMovable(page))
- inc_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ inc_node_page_state(page, page_isolate_index(page));
list_add(&page->lru, &pagelist);
ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
MIGRATE_SYNC, MR_MEMORY_FAILURE);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 3e3db7a..e2115c8 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1620,8 +1620,7 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
put_page(page);
list_add_tail(&page->lru, &source);
move_pages--;
- inc_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ inc_node_page_state(page, page_isolate_index(page));
} else {
#ifdef CONFIG_DEBUG_VM
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 1e7873e..c894925 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -964,8 +964,7 @@ static void migrate_page_add(struct page *page, struct list_head *pagelist,
if ((flags & MPOL_MF_MOVE_ALL) || page_mapcount(page) == 1) {
if (!isolate_lru_page(page)) {
list_add_tail(&page->lru, pagelist);
- inc_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ inc_node_page_state(page, page_isolate_index(page));
}
}
}
diff --git a/mm/migrate.c b/mm/migrate.c
index 87f4d0f..502ebea 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -184,8 +184,7 @@ void putback_movable_pages(struct list_head *l)
put_page(page);
} else {
putback_lru_page(page);
- dec_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ dec_node_page_state(page, page_isolate_index(page));
}
}
}
@@ -1130,8 +1129,7 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page,
* as __PageMovable
*/
if (likely(!__PageMovable(page)))
- dec_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ dec_node_page_state(page, page_isolate_index(page));
}
/*
@@ -1471,8 +1469,7 @@ static int do_move_page_to_node_array(struct mm_struct *mm,
err = isolate_lru_page(page);
if (!err) {
list_add_tail(&page->lru, &pagelist);
- inc_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ inc_node_page_state(page, page_isolate_index(page));
}
put_and_set:
/*
@@ -1816,8 +1813,6 @@ static bool numamigrate_update_ratelimit(pg_data_t *pgdat,
static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
{
- int page_lru;
-
VM_BUG_ON_PAGE(compound_order(page) && !PageTransHuge(page), page);
/* Avoid migrating to a node that is nearly full */
@@ -1839,8 +1834,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
return 0;
}
- page_lru = page_is_file_cache(page);
- mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru,
+ mod_node_page_state(page_pgdat(page), page_isolate_index(page),
hpage_nr_pages(page));
/*
@@ -1898,8 +1892,7 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma,
if (nr_remaining) {
if (!list_empty(&migratepages)) {
list_del(&page->lru);
- dec_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_cache(page));
+ dec_node_page_state(page, page_isolate_index(page));
putback_lru_page(page);
}
isolated = 0;
@@ -1929,7 +1922,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
pg_data_t *pgdat = NODE_DATA(node);
int isolated = 0;
struct page *new_page = NULL;
- int page_lru = page_is_file_cache(page);
+ int isolate_index = page_isolate_index(page);
unsigned long mmun_start = address & HPAGE_PMD_MASK;
unsigned long mmun_end = mmun_start + HPAGE_PMD_SIZE;
pmd_t orig_entry;
@@ -1991,8 +1984,8 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
/* Retake the callers reference and putback on LRU */
get_page(page);
putback_lru_page(page);
- mod_node_page_state(page_pgdat(page),
- NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR);
+ mod_node_page_state(page_pgdat(page), isolate_index,
+ -HPAGE_PMD_NR);
goto out_unlock;
}
@@ -2042,9 +2035,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
count_vm_events(PGMIGRATE_SUCCESS, HPAGE_PMD_NR);
count_vm_numa_events(NUMA_PAGE_MIGRATE, HPAGE_PMD_NR);
- mod_node_page_state(page_pgdat(page),
- NR_ISOLATED_ANON + page_lru,
- -HPAGE_PMD_NR);
+ mod_node_page_state(page_pgdat(page), isolate_index, -HPAGE_PMD_NR);
return isolated;
out_fail:
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 947ab6f..abb64b7 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1736,7 +1736,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &page_list,
&nr_scanned, sc, isolate_mode, lru);
- __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);
+ __mod_node_page_state(pgdat, lru_isolate_index(lru), nr_taken);
reclaim_stat->recent_scanned[file] += nr_taken;
if (global_reclaim(sc)) {
@@ -1765,7 +1765,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
putback_inactive_pages(lruvec, &page_list);
- __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken);
+ __mod_node_page_state(pgdat, lru_isolate_index(lru), -nr_taken);
spin_unlock_irq(&pgdat->lru_lock);
@@ -1843,7 +1843,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
stat.nr_congested, stat.nr_immediate,
stat.nr_activate, stat.nr_ref_keep,
stat.nr_unmap_fail,
- sc->priority, file);
+ sc->priority, lru_isolate_index(lru));
return nr_reclaimed;
}
@@ -1940,7 +1940,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &l_hold,
&nr_scanned, sc, isolate_mode, lru);
- __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);
+ __mod_node_page_state(pgdat, lru_isolate_index(lru), nr_taken);
reclaim_stat->recent_scanned[file] += nr_taken;
if (global_reclaim(sc))
@@ -2003,13 +2003,13 @@ static void shrink_active_list(unsigned long nr_to_scan,
nr_activate = move_active_pages_to_lru(lruvec, &l_active, &l_hold, lru);
nr_deactivate = move_active_pages_to_lru(lruvec, &l_inactive, &l_hold, lru - LRU_ACTIVE);
- __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken);
+ __mod_node_page_state(pgdat, lru_isolate_index(lru), -nr_taken);
spin_unlock_irq(&pgdat->lru_lock);
mem_cgroup_uncharge_list(&l_hold);
free_hot_cold_page_list(&l_hold, true);
trace_mm_vmscan_lru_shrink_active(pgdat->node_id, nr_taken, nr_activate,
- nr_deactivate, nr_rotated, sc->priority, file);
+ nr_deactivate, nr_rotated, sc->priority, lru_isolate_index(lru));
}
/*
@@ -2038,11 +2038,12 @@ static void shrink_active_list(unsigned long nr_to_scan,
* 1TB 101 10GB
* 10TB 320 32GB
*/
-static bool inactive_list_is_low(struct lruvec *lruvec, bool file,
+static bool inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru,
struct scan_control *sc, bool trace)
{
unsigned long inactive_ratio;
unsigned long inactive, active;
+ bool file = is_file_lru(lru);
enum lru_list inactive_lru = file * LRU_FILE;
enum lru_list active_lru = file * LRU_FILE + LRU_ACTIVE;
unsigned long gb;
@@ -2068,7 +2069,7 @@ static bool inactive_list_is_low(struct lruvec *lruvec, bool file,
sc->reclaim_idx,
lruvec_lru_size(lruvec, inactive_lru, MAX_NR_ZONES), inactive,
lruvec_lru_size(lruvec, active_lru, MAX_NR_ZONES), active,
- inactive_ratio, file);
+ inactive_ratio, lru_isolate_index(lru));
return inactive * inactive_ratio < active;
}
@@ -2077,7 +2078,7 @@ static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan,
struct lruvec *lruvec, struct scan_control *sc)
{
if (is_active_lru(lru)) {
- if (inactive_list_is_low(lruvec, is_file_lru(lru), sc, true))
+ if (inactive_list_is_low(lruvec, lru, sc, true))
shrink_active_list(nr_to_scan, lruvec, sc, lru);
return 0;
}
--
2.9.3
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