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Date: Sun, 6 Dec 2020 16:29:48 +0800
From: Muchun Song <songmuchun@...edance.com>
To: gregkh@...uxfoundation.org, rafael@...nel.org, adobriyan@...il.com,
akpm@...ux-foundation.org, hannes@...xchg.org, mhocko@...nel.org,
vdavydov.dev@...il.com, hughd@...gle.com, will@...nel.org,
guro@...com, rppt@...nel.org, tglx@...utronix.de, esyr@...hat.com,
peterx@...hat.com, krisman@...labora.com, surenb@...gle.com,
avagin@...nvz.org, elver@...gle.com, rdunlap@...radead.org,
iamjoonsoo.kim@....com
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-mm@...ck.org, cgroups@...r.kernel.org,
Muchun Song <songmuchun@...edance.com>
Subject: [PATCH v2 12/12] mm: memcontrol: remove {global_}node_page_state_pages
Now the unit of the vmstat counters are either pages or bytes. So we can
adjust the node_page_state to always returns values in pages and remove
the node_page_state_pages.
Signed-off-by: Muchun Song <songmuchun@...edance.com>
---
drivers/base/node.c | 10 +++++-----
fs/proc/meminfo.c | 12 ++++++------
include/linux/vmstat.h | 17 +----------------
kernel/power/snapshot.c | 2 +-
mm/oom_kill.c | 2 +-
mm/page_alloc.c | 10 +++++-----
mm/vmscan.c | 2 +-
mm/vmstat.c | 23 ++++++-----------------
8 files changed, 26 insertions(+), 52 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index bc01ce0b2fcd..42298e3552e5 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -374,8 +374,8 @@ static ssize_t node_read_meminfo(struct device *dev,
unsigned long sreclaimable, sunreclaimable;
si_meminfo_node(&i, nid);
- sreclaimable = node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B);
- sunreclaimable = node_page_state_pages(pgdat, NR_SLAB_UNRECLAIMABLE_B);
+ sreclaimable = node_page_state(pgdat, NR_SLAB_RECLAIMABLE_B);
+ sunreclaimable = node_page_state(pgdat, NR_SLAB_UNRECLAIMABLE_B);
len = sysfs_emit_at(buf, len,
"Node %d MemTotal: %8lu kB\n"
"Node %d MemFree: %8lu kB\n"
@@ -446,9 +446,9 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
nid, K(node_page_state(pgdat, NR_ANON_MAPPED)),
nid, K(i.sharedram),
- nid, node_page_state(pgdat, NR_KERNEL_STACK_B) / SZ_1K,
+ nid, K(node_page_state(pgdat, NR_KERNEL_STACK_B)),
#ifdef CONFIG_SHADOW_CALL_STACK
- nid, node_page_state(pgdat, NR_KERNEL_SCS_B) / SZ_1K,
+ nid, K(node_page_state(pgdat, NR_KERNEL_SCS_B)),
#endif
nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
nid, 0UL,
@@ -517,7 +517,7 @@ static ssize_t node_read_vmstat(struct device *dev,
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
len += sysfs_emit_at(buf, len, "%s %lu\n",
node_stat_name(i),
- node_page_state_pages(pgdat, i));
+ node_page_state(pgdat, i));
return len;
}
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 69895e83d4fc..95ea5f062161 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -52,8 +52,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
available = si_mem_available();
- sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);
- sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);
+ sreclaimable = global_node_page_state(NR_SLAB_RECLAIMABLE_B);
+ sunreclaim = global_node_page_state(NR_SLAB_UNRECLAIMABLE_B);
show_val_kb(m, "MemTotal: ", i.totalram);
show_val_kb(m, "MemFree: ", i.freeram);
@@ -100,11 +100,11 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
show_val_kb(m, "SReclaimable: ", sreclaimable);
show_val_kb(m, "SUnreclaim: ", sunreclaim);
- seq_printf(m, "KernelStack: %8lu kB\n",
- global_node_page_state(NR_KERNEL_STACK_B) / SZ_1K);
+ show_val_kb(m, "KernelStack: ",
+ global_node_page_state(NR_KERNEL_STACK_B));
#ifdef CONFIG_SHADOW_CALL_STACK
- seq_printf(m, "ShadowCallStack:%8lu kB\n",
- global_node_page_state(NR_KERNEL_SCS_B) / SZ_1K);
+ show_val_kb(m, "ShadowCallStack:",
+ global_node_page_state(NR_KERNEL_SCS_B));
#endif
show_val_kb(m, "PageTables: ",
global_zone_page_state(NR_PAGETABLE));
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index afd84dc2398c..ae821e016fdd 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -193,8 +193,7 @@ static inline unsigned long global_zone_page_state(enum zone_stat_item item)
return x;
}
-static inline
-unsigned long global_node_page_state_pages(enum node_stat_item item)
+static inline unsigned long global_node_page_state(enum node_stat_item item)
{
long x = atomic_long_read(&vm_node_stat[item]);
@@ -207,17 +206,6 @@ unsigned long global_node_page_state_pages(enum node_stat_item item)
return x;
}
-static inline unsigned long global_node_page_state(enum node_stat_item item)
-{
- long x = atomic_long_read(&vm_node_stat[item]);
-
-#ifdef CONFIG_SMP
- if (x < 0)
- x = 0;
-#endif
- return x;
-}
-
static inline unsigned long zone_page_state(struct zone *zone,
enum zone_stat_item item)
{
@@ -258,12 +246,9 @@ extern unsigned long sum_zone_node_page_state(int node,
extern unsigned long sum_zone_numa_state(int node, enum numa_stat_item item);
extern unsigned long node_page_state(struct pglist_data *pgdat,
enum node_stat_item item);
-extern unsigned long node_page_state_pages(struct pglist_data *pgdat,
- enum node_stat_item item);
#else
#define sum_zone_node_page_state(node, item) global_zone_page_state(item)
#define node_page_state(node, item) global_node_page_state(item)
-#define node_page_state_pages(node, item) global_node_page_state_pages(item)
#endif /* CONFIG_NUMA */
#ifdef CONFIG_SMP
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index d63560e1cf87..664520bdaa20 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1705,7 +1705,7 @@ static unsigned long minimum_image_size(unsigned long saveable)
{
unsigned long size;
- size = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B)
+ size = global_node_page_state(NR_SLAB_RECLAIMABLE_B)
+ global_node_page_state(NR_ACTIVE_ANON)
+ global_node_page_state(NR_INACTIVE_ANON)
+ global_node_page_state(NR_ACTIVE_FILE)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 04b19b7b5435..73861473c7d4 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -188,7 +188,7 @@ static bool should_dump_unreclaim_slab(void)
global_node_page_state(NR_ISOLATED_FILE) +
global_node_page_state(NR_UNEVICTABLE);
- return (global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B) > nr_lru);
+ return (global_node_page_state(NR_SLAB_UNRECLAIMABLE_B) > nr_lru);
}
/**
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 58916b3afdab..d16c9388c0b8 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5372,7 +5372,7 @@ long si_mem_available(void)
* items that are in use, and cannot be freed. Cap this estimate at the
* low watermark.
*/
- reclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B) +
+ reclaimable = global_node_page_state(NR_SLAB_RECLAIMABLE_B) +
global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE);
available += reclaimable - min(reclaimable / 2, wmark_low);
@@ -5516,8 +5516,8 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
global_node_page_state(NR_UNEVICTABLE),
global_node_page_state(NR_FILE_DIRTY),
global_node_page_state(NR_WRITEBACK),
- global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B),
- global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B),
+ global_node_page_state(NR_SLAB_RECLAIMABLE_B),
+ global_node_page_state(NR_SLAB_UNRECLAIMABLE_B),
global_node_page_state(NR_FILE_MAPPED),
global_node_page_state(NR_SHMEM),
global_zone_page_state(NR_PAGETABLE),
@@ -5572,9 +5572,9 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
K(node_page_state(pgdat, NR_ANON_THPS)),
#endif
K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
- node_page_state(pgdat, NR_KERNEL_STACK_B) / SZ_1K,
+ K(node_page_state(pgdat, NR_KERNEL_STACK_B)),
#ifdef CONFIG_SHADOW_CALL_STACK
- node_page_state(pgdat, NR_KERNEL_SCS_B) / SZ_1K,
+ K(node_page_state(pgdat, NR_KERNEL_SCS_B)),
#endif
pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES ?
"yes" : "no");
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 469016222cdb..5d3c8fa68979 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4220,7 +4220,7 @@ int node_reclaim(struct pglist_data *pgdat, gfp_t gfp_mask, unsigned int order)
* unmapped file backed pages.
*/
if (node_pagecache_reclaimable(pgdat) <= pgdat->min_unmapped_pages &&
- node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B) <=
+ node_page_state(pgdat, NR_SLAB_RECLAIMABLE_B) <=
pgdat->min_slab_pages)
return NODE_RECLAIM_FULL;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 25751b1d8e2e..b7cdef585efd 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1000,22 +1000,9 @@ unsigned long sum_zone_numa_state(int node,
}
/*
- * Determine the per node value of a stat item.
+ * Determine the per node value of a stat item. This always returns
+ * values in pages.
*/
-unsigned long node_page_state_pages(struct pglist_data *pgdat,
- enum node_stat_item item)
-{
- long x = atomic_long_read(&pgdat->vm_stat[item]);
-
-#ifdef CONFIG_SMP
- if (x < 0)
- x = 0;
-#endif
- if (vmstat_item_in_bytes(item))
- x >>= PAGE_SHIFT;
- return x;
-}
-
unsigned long node_page_state(struct pglist_data *pgdat,
enum node_stat_item item)
{
@@ -1025,6 +1012,8 @@ unsigned long node_page_state(struct pglist_data *pgdat,
if (x < 0)
x = 0;
#endif
+ if (vmstat_item_in_bytes(item))
+ x >>= PAGE_SHIFT;
return x;
}
#endif
@@ -1626,7 +1615,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
seq_printf(m, "\n per-node stats");
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) {
seq_printf(m, "\n %-12s %lu", node_stat_name(i),
- node_page_state_pages(pgdat, i));
+ node_page_state(pgdat, i));
}
}
seq_printf(m,
@@ -1747,7 +1736,7 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos)
#endif
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
- v[i] = global_node_page_state_pages(i);
+ v[i] = global_node_page_state(i);
v += NR_VM_NODE_STAT_ITEMS;
global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD,
--
2.11.0
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