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mm: memcontrol: account pagetables per node

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For many workloads, pagetable consumption is significant and it makes
sense to expose it in the memory.stat for the memory cgroups.  However at
the moment, the pagetables are accounted per-zone.  Converting them to
per-node and using the right interface will correctly account for the
memory cgroups as well.

[akpm@linux-foundation.org: export __mod_lruvec_page_state to modules for arch/mips/kvm/]

Link: https://lkml.kernel.org/r/20201130212541.2781790-3-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Shakeel Butt 2020-12-14 19:07:17 -08:00 committed by Linus Torvalds
parent c47d5032ed
commit f0c0c115fb
9 changed files with 19 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/admin-guide/cgroup-v2.rst
View File

@ -1274,6 +1274,9 @@ PAGE_SIZE multiple when read back.
kernel_stack
Amount of memory allocated to kernel stacks.
pagetables
Amount of memory allocated for page tables.
percpu(npn)
Amount of memory used for storing per-cpu kernel
data structures.

6
arch/nds32/mm/mm-nds32.c
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@ -34,8 +34,8 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
cpu_dcache_wb_range((unsigned long)new_pgd,
(unsigned long)new_pgd +
PTRS_PER_PGD * sizeof(pgd_t));
inc_zone_page_state(virt_to_page((unsigned long *)new_pgd),
NR_PAGETABLE);
inc_lruvec_page_state(virt_to_page((unsigned long *)new_pgd),
NR_PAGETABLE);
return new_pgd;
}
@ -59,7 +59,7 @@ void pgd_free(struct mm_struct *mm, pgd_t * pgd)
pte = pmd_page(*pmd);
pmd_clear(pmd);
dec_zone_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
dec_lruvec_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
pte_free(mm, pte);
mm_dec_nr_ptes(mm);
pmd_free(mm, pmd);

2
drivers/base/node.c
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@ -450,7 +450,7 @@ static ssize_t node_read_meminfo(struct device *dev,
#ifdef CONFIG_SHADOW_CALL_STACK
nid, node_page_state(pgdat, NR_KERNEL_SCS_KB),
#endif
nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
nid, K(node_page_state(pgdat, NR_PAGETABLE)),
nid, 0UL,
nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),

2
fs/proc/meminfo.c
View File

@ -107,7 +107,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
global_node_page_state(NR_KERNEL_SCS_KB));
#endif
show_val_kb(m, "PageTables: ",
global_zone_page_state(NR_PAGETABLE));
global_node_page_state(NR_PAGETABLE));
show_val_kb(m, "NFS_Unstable: ", 0);
show_val_kb(m, "Bounce: ",

8
include/linux/mm.h
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@ -2203,7 +2203,7 @@ static inline bool pgtable_pte_page_ctor(struct page *page)
if (!ptlock_init(page))
return false;
__SetPageTable(page);
inc_zone_page_state(page, NR_PAGETABLE);
inc_lruvec_page_state(page, NR_PAGETABLE);
return true;
}
@ -2211,7 +2211,7 @@ static inline void pgtable_pte_page_dtor(struct page *page)
{
ptlock_free(page);
__ClearPageTable(page);
dec_zone_page_state(page, NR_PAGETABLE);
dec_lruvec_page_state(page, NR_PAGETABLE);
}
#define pte_offset_map_lock(mm, pmd, address, ptlp) \
@ -2298,7 +2298,7 @@ static inline bool pgtable_pmd_page_ctor(struct page *page)
if (!pmd_ptlock_init(page))
return false;
__SetPageTable(page);
inc_zone_page_state(page, NR_PAGETABLE);
inc_lruvec_page_state(page, NR_PAGETABLE);
return true;
}
@ -2306,7 +2306,7 @@ static inline void pgtable_pmd_page_dtor(struct page *page)
{
pmd_ptlock_free(page);
__ClearPageTable(page);
dec_zone_page_state(page, NR_PAGETABLE);
dec_lruvec_page_state(page, NR_PAGETABLE);
}
/*

2
include/linux/mmzone.h
View File

@ -152,7 +152,6 @@ enum zone_stat_item {
NR_ZONE_UNEVICTABLE,
NR_ZONE_WRITE_PENDING, /* Count of dirty, writeback and unstable pages */
NR_MLOCK, /* mlock()ed pages found and moved off LRU */
NR_PAGETABLE, /* used for pagetables */
/* Second 128 byte cacheline */
NR_BOUNCE,
#if IS_ENABLED(CONFIG_ZSMALLOC)
@ -207,6 +206,7 @@ enum node_stat_item {
#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK)
NR_KERNEL_SCS_KB, /* measured in KiB */
#endif
NR_PAGETABLE, /* used for pagetables */
NR_VM_NODE_STAT_ITEMS
};

2
mm/memcontrol.c
View File

@ -869,6 +869,7 @@ void __mod_lruvec_page_state(struct page *page, enum node_stat_item idx,
lruvec = mem_cgroup_lruvec(head->mem_cgroup, pgdat);
__mod_lruvec_state(lruvec, idx, val);
}
EXPORT_SYMBOL(__mod_lruvec_page_state);
void __mod_lruvec_kmem_state(void *p, enum node_stat_item idx, int val)
{
@ -1493,6 +1494,7 @@ static struct memory_stat memory_stats[] = {
{ "anon", PAGE_SIZE, NR_ANON_MAPPED },
{ "file", PAGE_SIZE, NR_FILE_PAGES },
{ "kernel_stack", 1024, NR_KERNEL_STACK_KB },
{ "pagetables", PAGE_SIZE, NR_PAGETABLE },
{ "percpu", 1, MEMCG_PERCPU_B },
{ "sock", PAGE_SIZE, MEMCG_SOCK },
{ "shmem", PAGE_SIZE, NR_SHMEM },

6
mm/page_alloc.c
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@ -5465,7 +5465,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B),
global_node_page_state(NR_FILE_MAPPED),
global_node_page_state(NR_SHMEM),
global_zone_page_state(NR_PAGETABLE),
global_node_page_state(NR_PAGETABLE),
global_zone_page_state(NR_BOUNCE),
global_zone_page_state(NR_FREE_PAGES),
free_pcp,
@ -5497,6 +5497,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
#ifdef CONFIG_SHADOW_CALL_STACK
" shadow_call_stack:%lukB"
#endif
" pagetables:%lukB"
" all_unreclaimable? %s"
"\n",
pgdat->node_id,
@ -5522,6 +5523,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
#ifdef CONFIG_SHADOW_CALL_STACK
node_page_state(pgdat, NR_KERNEL_SCS_KB),
#endif
K(node_page_state(pgdat, NR_PAGETABLE)),
pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES ?
"yes" : "no");
}
@ -5553,7 +5555,6 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
" present:%lukB"
" managed:%lukB"
" mlocked:%lukB"
" pagetables:%lukB"
" bounce:%lukB"
" free_pcp:%lukB"
" local_pcp:%ukB"
@ -5574,7 +5575,6 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
K(zone->present_pages),
K(zone_managed_pages(zone)),
K(zone_page_state(zone, NR_MLOCK)),
K(zone_page_state(zone, NR_PAGETABLE)),
K(zone_page_state(zone, NR_BOUNCE)),
K(free_pcp),
K(this_cpu_read(zone->pageset->pcp.count)),

2
mm/vmstat.c
View File

@ -1157,7 +1157,6 @@ const char * const vmstat_text[] = {
"nr_zone_unevictable",
"nr_zone_write_pending",
"nr_mlock",
"nr_page_table_pages",
"nr_bounce",
#if IS_ENABLED(CONFIG_ZSMALLOC)
"nr_zspages",
@ -1215,6 +1214,7 @@ const char * const vmstat_text[] = {
#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK)
"nr_shadow_call_stack",
#endif
"nr_page_table_pages",
/* enum writeback_stat_item counters */
"nr_dirty_threshold",