From: js1304@gmail.com
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: [PATCH v2 03/11] mm/slab: drain the free slab as much as possible
Date: Tue, 12 Apr 2016 13:50:58 +0900 [thread overview]
Message-ID: <1460436666-20462-4-git-send-email-iamjoonsoo.kim@lge.com> (raw)
In-Reply-To: <1460436666-20462-1-git-send-email-iamjoonsoo.kim@lge.com>
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
slabs_tofree() implies freeing all free slab. We can do it with
just providing INT_MAX.
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
mm/slab.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/mm/slab.c b/mm/slab.c
index 373b8be..5451929 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -888,12 +888,6 @@ static int init_cache_node_node(int node)
return 0;
}
-static inline int slabs_tofree(struct kmem_cache *cachep,
- struct kmem_cache_node *n)
-{
- return (n->free_objects + cachep->num - 1) / cachep->num;
-}
-
static void cpuup_canceled(long cpu)
{
struct kmem_cache *cachep;
@@ -958,7 +952,7 @@ free_slab:
n = get_node(cachep, node);
if (!n)
continue;
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
}
}
@@ -1110,7 +1104,7 @@ static int __meminit drain_cache_node_node(int node)
if (!n)
continue;
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
if (!list_empty(&n->slabs_full) ||
!list_empty(&n->slabs_partial)) {
@@ -2304,7 +2298,7 @@ int __kmem_cache_shrink(struct kmem_cache *cachep, bool deactivate)
check_irq_on();
for_each_kmem_cache_node(cachep, node, n) {
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
ret += !list_empty(&n->slabs_full) ||
!list_empty(&n->slabs_partial);
--
1.9.1
--
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next prev parent reply other threads:[~2016-04-12 4:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-12 4:50 [PATCH v2 00/11] mm/slab: reduce lock contention in alloc path js1304
2016-04-12 4:50 ` [PATCH v2 01/11] mm/slab: fix the theoretical race by holding proper lock js1304
2016-04-12 16:38 ` Christoph Lameter
2016-04-14 1:56 ` Joonsoo Kim
2016-04-12 4:50 ` [PATCH v2 02/11] mm/slab: remove BAD_ALIEN_MAGIC again js1304
2016-04-12 16:41 ` Christoph Lameter
2016-04-12 4:50 ` js1304 [this message]
2016-04-12 4:50 ` [PATCH v2 04/11] mm/slab: factor out kmem_cache_node initialization code js1304
2016-04-12 16:53 ` Christoph Lameter
2016-04-26 0:47 ` Joonsoo Kim
2016-04-12 4:51 ` [PATCH v2 05/11] mm/slab: clean-up kmem_cache_node setup js1304
2016-04-12 16:55 ` Christoph Lameter
2016-04-12 4:51 ` [PATCH v2 06/11] mm/slab: don't keep free slabs if free_objects exceeds free_limit js1304
2016-07-22 11:51 ` Tetsuo Handa
2016-07-26 7:18 ` Joonsoo Kim
2016-04-12 4:51 ` [PATCH v2 07/11] mm/slab: racy access/modify the slab color js1304
2016-04-12 4:51 ` [PATCH v2 08/11] mm/slab: make cache_grow() handle the page allocated on arbitrary node js1304
2016-04-12 4:51 ` [PATCH v2 09/11] mm/slab: separate cache_grow() to two parts js1304
2016-04-12 4:51 ` [PATCH v2 10/11] mm/slab: refill cpu cache through a new slab without holding a node lock js1304
2016-04-12 4:51 ` [PATCH v2 11/11] mm/slab: lockless decision to grow cache js1304
2016-04-12 7:24 ` Jesper Dangaard Brouer
2016-04-12 8:16 ` Joonsoo Kim
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