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mm: memcontrol: account pagetables per node 

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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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",