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mm: memcontrol: account slab stats per lruvec 

Josef's redesign of the balancing between slab caches and the page cache
requires slab cache statistics at the lruvec level.

Link: http://lkml.kernel.org/r/20170530181724.27197-7-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Johannes Weiner 2017-07-06 15:40:55 -07:00 committed by Linus Torvalds
parent 00f3ca2c2d
commit 7779f21236
3 changed files with 7 additions and 27 deletions
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12
mm/slab.c
View File

@ -1425,11 +1425,9 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
nr_pages = (1 << cachep->gfporder);
if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
add_node_page_state(page_pgdat(page),
NR_SLAB_RECLAIMABLE, nr_pages);
mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, nr_pages);
else
add_node_page_state(page_pgdat(page),
NR_SLAB_UNRECLAIMABLE, nr_pages);
mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, nr_pages);
__SetPageSlab(page);
/* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */
@ -1459,11 +1457,9 @@ static void kmem_freepages(struct kmem_cache *cachep, struct page *page)
kmemcheck_free_shadow(page, order);
if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
sub_node_page_state(page_pgdat(page),
NR_SLAB_RECLAIMABLE, nr_freed);
mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, -nr_freed);
else
sub_node_page_state(page_pgdat(page),
NR_SLAB_UNRECLAIMABLE, nr_freed);
mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, -nr_freed);
BUG_ON(!PageSlab(page));
__ClearPageSlabPfmemalloc(page);

18
mm/slab.h
View File

@ -274,22 +274,11 @@ static __always_inline int memcg_charge_slab(struct page *page,
gfp_t gfp, int order,
struct kmem_cache *s)
{
int ret;
if (!memcg_kmem_enabled())
return 0;
if (is_root_cache(s))
return 0;
ret = memcg_kmem_charge_memcg(page, gfp, order, s->memcg_params.memcg);
if (ret)
return ret;
mod_memcg_page_state(page,
(s->flags & SLAB_RECLAIM_ACCOUNT) ?
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
1 << order);
return 0;
return memcg_kmem_charge_memcg(page, gfp, order, s->memcg_params.memcg);
}
static __always_inline void memcg_uncharge_slab(struct page *page, int order,
@ -297,11 +286,6 @@ static __always_inline void memcg_uncharge_slab(struct page *page, int order,
{
if (!memcg_kmem_enabled())
return;
mod_memcg_page_state(page,
(s->flags & SLAB_RECLAIM_ACCOUNT) ?
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
-(1 << order));
memcg_kmem_uncharge(page, order);
}

4
mm/slub.c
View File

@ -1615,7 +1615,7 @@ out:
if (!page)
return NULL;
mod_node_page_state(page_pgdat(page),
mod_lruvec_page_state(page,
(s->flags & SLAB_RECLAIM_ACCOUNT) ?
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
1 << oo_order(oo));
@ -1655,7 +1655,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
kmemcheck_free_shadow(page, compound_order(page));
mod_node_page_state(page_pgdat(page),
mod_lruvec_page_state(page,
(s->flags & SLAB_RECLAIM_ACCOUNT) ?
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
-pages);