From: Vladimir Davydov <vdavydov@parallels.com>
To: akpm@linux-foundation.org
Cc: cl@linux-foundation.org, penberg@kernel.org, gthelen@google.com,
hannes@cmpxchg.org, mhocko@suse.cz, glommer@gmail.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
devel@openvz.org
Subject: [PATCH -mm] slab: document kmalloc_order
Date: Fri, 11 Apr 2014 16:52:16 +0400 [thread overview]
Message-ID: <1397220736-13840-1-git-send-email-vdavydov@parallels.com> (raw)
In-Reply-To: <20140410163831.c76596b0f8d0bef39a42c63f@linux-foundation.org>
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
---
mm/slab_common.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/mm/slab_common.c b/mm/slab_common.c
index cab4c49b3e8c..3ffd2e76b5d2 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -573,6 +573,11 @@ void __init create_kmalloc_caches(unsigned long flags)
}
#endif /* !CONFIG_SLOB */
+/*
+ * To avoid unnecessary overhead, we pass through large allocation requests
+ * directly to the page allocator. We use __GFP_COMP, because we will need to
+ * know the allocation order to free the pages properly in kfree.
+ */
void *kmalloc_order(size_t size, gfp_t flags, unsigned int order)
{
void *ret;
--
1.7.10.4
--
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next prev parent reply other threads:[~2014-04-11 12:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-01 7:38 [PATCH -mm v2 0/2] cleanup kmemcg charging (was: "kmemcg: get rid of __GFP_KMEMCG") Vladimir Davydov
2014-04-01 7:38 ` [PATCH -mm v2 1/2] sl[au]b: charge slabs to kmemcg explicitly Vladimir Davydov
2014-04-02 0:49 ` Greg Thelen
2014-04-01 7:38 ` [PATCH -mm v2 2/2] mm: get rid of __GFP_KMEMCG Vladimir Davydov
2014-04-02 0:48 ` Greg Thelen
2014-04-02 6:11 ` Vladimir Davydov
2014-04-02 6:16 ` [PATCH -mm v2.1] " Vladimir Davydov
2014-04-02 21:25 ` Greg Thelen
2014-04-03 15:04 ` Vladimir Davydov
2014-04-03 15:05 ` [PATCH -mm v2.2] " Vladimir Davydov
2014-04-10 23:38 ` Andrew Morton
2014-04-11 12:52 ` Vladimir Davydov [this message]
2014-04-11 15:57 ` [PATCH -mm] slab: document kmalloc_order Christoph Lameter
2014-04-11 17:24 ` Vladimir Davydov
2014-04-11 16:07 ` [PATCH -mm v2.2] mm: get rid of __GFP_KMEMCG Christoph Lameter
2014-04-11 17:33 ` Vladimir Davydov
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