A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 18:51:56 -04:00
Code Issues Projects Releases Packages Wiki Activity

sl[au]b: allocate objects from memcg cache

Browse source 
We are able to match a cache allocation to a particular memcg.  If the
task doesn't change groups during the allocation itself - a rare event,
this will give us a good picture about who is the first group to touch a
cache page.

This patch uses the now available infrastructure by calling
memcg_kmem_get_cache() before all the cache allocations.

Signed-off-by: Glauber Costa <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: JoonSoo Kim <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Suleiman Souhlal <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Glauber Costa 2012-12-18 14:22:48 -08:00 • committed by Linus Torvalds
commit d79923fad9
4 changed files with 16 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

3
mm/memcontrol.c
View file

@ -3086,6 +3086,9 @@ static struct kmem_cache *kmem_cache_dup(struct mem_cgroup *memcg,
new = kmem_cache_create_memcg(memcg, name, s->object_size, s->align,
(s->flags & ~SLAB_PANIC), s->ctor);
if (new)
new->allocflags |= __GFP_KMEMCG;
kfree(name);
return new;
}

6
mm/slab.c
View file

@ -1933,7 +1933,7 @@ static void kmem_freepages(struct kmem_cache *cachep, void *addr)
}
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += nr_freed;
free_pages((unsigned long)addr, cachep->gfporder);
free_memcg_kmem_pages((unsigned long)addr, cachep->gfporder);
}
static void kmem_rcu_free(struct rcu_head *head)
@ -3486,6 +3486,8 @@ slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
if (slab_should_failslab(cachep, flags))
return NULL;
cachep = memcg_kmem_get_cache(cachep, flags);
cache_alloc_debugcheck_before(cachep, flags);
local_irq_save(save_flags);
@ -3571,6 +3573,8 @@ slab_alloc(struct kmem_cache *cachep, gfp_t flags, unsigned long caller)
if (slab_should_failslab(cachep, flags))
return NULL;
cachep = memcg_kmem_get_cache(cachep, flags);
cache_alloc_debugcheck_before(cachep, flags);
local_irq_save(save_flags);
objp = __do_cache_alloc(cachep, flags);

7
mm/slub.c
View file

@ -1405,7 +1405,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
reset_page_mapcount(page);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += pages;
__free_pages(page, order);
__free_memcg_kmem_pages(page, order);
}
#define need_reserve_slab_rcu \
@ -2323,6 +2323,7 @@ static __always_inline void *slab_alloc_node(struct kmem_cache *s,
if (slab_pre_alloc_hook(s, gfpflags))
return NULL;
s = memcg_kmem_get_cache(s, gfpflags);
redo:
/*
@ -3284,7 +3285,7 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node)
struct page *page;
void *ptr = NULL;
flags |= __GFP_COMP | __GFP_NOTRACK;
flags |= __GFP_COMP | __GFP_NOTRACK | __GFP_KMEMCG;
page = alloc_pages_node(node, flags, get_order(size));
if (page)
ptr = page_address(page);
@ -3390,7 +3391,7 @@ void kfree(const void *x)
if (unlikely(!PageSlab(page))) {
BUG_ON(!PageCompound(page));
kmemleak_free(x);
__free_pages(page, compound_order(page));
__free_memcg_kmem_pages(page, compound_order(page));
return;
}
slab_free(page->slab_cache, page, object, _RET_IP_);