From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/16] slab: overloading the RCU head over the LRU for RCU free
Date: Thu, 12 Sep 2013 15:55:49 +0900 [thread overview]
Message-ID: <20130912065549.GC8055@lge.com> (raw)
In-Reply-To: <000001410d765d3a-0f3f8df2-dccb-455a-a929-f1fd018700d2-000000@email.amazonses.com>
On Wed, Sep 11, 2013 at 02:39:22PM +0000, Christoph Lameter wrote:
> On Thu, 22 Aug 2013, Joonsoo Kim wrote:
>
> > With build-time size checking, we can overload the RCU head over the LRU
> > of struct page to free pages of a slab in rcu context. This really help to
> > implement to overload the struct slab over the struct page and this
> > eventually reduce memory usage and cache footprint of the SLAB.
>
> Looks fine to me. Can you add the rcu_head to the struct page union? This
> kind of overload is used frequently elsewhere as well. Then cleanup other
> cases of such uses (such as in SLUB).
Okay. But I will implement it seprately because I don't know where the cases
are now and some inverstigation would be needed.
>
> Acked-by: Christoph Lameter <cl@linux.com>
Thanks!
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WARNING: multiple messages have this Message-ID (diff)
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/16] slab: overloading the RCU head over the LRU for RCU free
Date: Thu, 12 Sep 2013 15:55:49 +0900 [thread overview]
Message-ID: <20130912065549.GC8055@lge.com> (raw)
In-Reply-To: <000001410d765d3a-0f3f8df2-dccb-455a-a929-f1fd018700d2-000000@email.amazonses.com>
On Wed, Sep 11, 2013 at 02:39:22PM +0000, Christoph Lameter wrote:
> On Thu, 22 Aug 2013, Joonsoo Kim wrote:
>
> > With build-time size checking, we can overload the RCU head over the LRU
> > of struct page to free pages of a slab in rcu context. This really help to
> > implement to overload the struct slab over the struct page and this
> > eventually reduce memory usage and cache footprint of the SLAB.
>
> Looks fine to me. Can you add the rcu_head to the struct page union? This
> kind of overload is used frequently elsewhere as well. Then cleanup other
> cases of such uses (such as in SLUB).
Okay. But I will implement it seprately because I don't know where the cases
are now and some inverstigation would be needed.
>
> Acked-by: Christoph Lameter <cl@linux.com>
Thanks!
next prev parent reply other threads:[~2013-09-12 6:55 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-22 8:44 [PATCH 00/16] slab: overload struct slab over struct page to reduce memory usage Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 01/16] slab: correct pfmemalloc check Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-09-11 14:30 ` Christoph Lameter
2013-09-11 14:30 ` Christoph Lameter
2013-09-12 6:51 ` Joonsoo Kim
2013-09-12 6:51 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 02/16] slab: change return type of kmem_getpages() to struct page Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 17:49 ` Christoph Lameter
2013-08-22 17:49 ` Christoph Lameter
2013-08-23 6:40 ` Joonsoo Kim
2013-08-23 6:40 ` Joonsoo Kim
2013-09-11 14:31 ` Christoph Lameter
2013-09-11 14:31 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 03/16] slab: remove colouroff in struct slab Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-09-11 14:32 ` Christoph Lameter
2013-09-11 14:32 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 04/16] slab: remove nodeid " Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 17:51 ` Christoph Lameter
2013-08-22 17:51 ` Christoph Lameter
2013-08-23 6:49 ` Joonsoo Kim
2013-08-23 6:49 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 05/16] slab: remove cachep in struct slab_rcu Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 17:53 ` Christoph Lameter
2013-08-22 17:53 ` Christoph Lameter
2013-08-23 6:53 ` Joonsoo Kim
2013-08-23 6:53 ` Joonsoo Kim
2013-08-23 13:42 ` Christoph Lameter
2013-08-23 13:42 ` Christoph Lameter
2013-08-23 14:24 ` JoonSoo Kim
2013-08-23 14:24 ` JoonSoo Kim
2013-08-23 15:41 ` Christoph Lameter
2013-08-23 15:41 ` Christoph Lameter
2013-08-23 16:12 ` JoonSoo Kim
2013-08-23 16:12 ` JoonSoo Kim
2013-09-02 8:38 ` [PATCH 0/4] slab: implement byte sized indexes for the freelist of a slab Joonsoo Kim
2013-09-02 8:38 ` Joonsoo Kim
2013-09-02 8:38 ` [PATCH 1/4] slab: factor out calculate nr objects in cache_estimate Joonsoo Kim
2013-09-02 8:38 ` Joonsoo Kim
2013-09-02 8:38 ` [PATCH 2/4] slab: introduce helper functions to get/set free object Joonsoo Kim
2013-09-02 8:38 ` Joonsoo Kim
2013-09-02 8:38 ` [PATCH 3/4] slab: introduce byte sized index for the freelist of a slab Joonsoo Kim
2013-09-02 8:38 ` Joonsoo Kim
2013-09-02 8:38 ` [PATCH 4/4] slab: make more slab management structure off the slab Joonsoo Kim
2013-09-02 8:38 ` Joonsoo Kim
2013-09-03 14:15 ` [PATCH 0/4] slab: implement byte sized indexes for the freelist of a slab Christoph Lameter
2013-09-03 14:15 ` Christoph Lameter
2013-09-04 8:33 ` Joonsoo Kim
2013-09-04 8:33 ` Joonsoo Kim
2013-09-05 6:55 ` Joonsoo Kim
2013-09-05 6:55 ` Joonsoo Kim
2013-09-05 14:33 ` Christoph Lameter
2013-09-05 14:33 ` Christoph Lameter
2013-09-06 5:58 ` Joonsoo Kim
2013-09-06 5:58 ` Joonsoo Kim
2013-09-04 2:17 ` Wanpeng Li
2013-09-04 2:17 ` Wanpeng Li
[not found] ` <5226985f.4475320a.1c61.2623SMTPIN_ADDED_BROKEN@mx.google.com>
2013-09-04 8:28 ` Joonsoo Kim
2013-09-04 8:28 ` Joonsoo Kim
2013-09-11 14:33 ` [PATCH 05/16] slab: remove cachep in struct slab_rcu Christoph Lameter
2013-09-11 14:33 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 06/16] slab: put forward freeing slab management object Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-09-11 14:35 ` Christoph Lameter
2013-09-11 14:35 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 07/16] slab: overloading the RCU head over the LRU for RCU free Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-27 22:06 ` Jonathan Corbet
2013-08-27 22:06 ` Jonathan Corbet
2013-08-28 6:36 ` Joonsoo Kim
2013-08-28 6:36 ` Joonsoo Kim
2013-09-11 14:39 ` Christoph Lameter
2013-09-11 14:39 ` Christoph Lameter
2013-09-12 6:55 ` Joonsoo Kim [this message]
2013-09-12 6:55 ` Joonsoo Kim
2013-09-12 14:21 ` Christoph Lameter
2013-09-12 14:21 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 08/16] slab: use well-defined macro, virt_to_slab() Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-09-11 14:40 ` Christoph Lameter
2013-09-11 14:40 ` Christoph Lameter
2013-08-22 8:44 ` [PATCH 09/16] slab: use __GFP_COMP flag for allocating slab pages Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 18:00 ` Christoph Lameter
2013-08-22 18:00 ` Christoph Lameter
2013-08-23 6:55 ` Joonsoo Kim
2013-08-23 6:55 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 10/16] slab: change the management method of free objects of the slab Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 11/16] slab: remove kmem_bufctl_t Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 12/16] slab: remove SLAB_LIMIT Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 13/16] slab: replace free and inuse in struct slab with newly introduced active Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 14/16] slab: use struct page for slab management Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 15/16] slab: remove useless statement for checking pfmemalloc Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 8:44 ` [PATCH 16/16] slab: rename slab_bufctl to slab_freelist Joonsoo Kim
2013-08-22 8:44 ` Joonsoo Kim
2013-08-22 16:47 ` [PATCH 00/16] slab: overload struct slab over struct page to reduce memory usage Christoph Lameter
2013-08-22 16:47 ` Christoph Lameter
2013-08-23 6:35 ` Joonsoo Kim
2013-08-23 6:35 ` Joonsoo Kim
2013-09-04 3:38 ` Wanpeng Li
2013-09-04 3:38 ` Wanpeng Li
[not found] ` <5226ab2c.02092b0a.5eed.ffffd7e4SMTPIN_ADDED_BROKEN@mx.google.com>
2013-09-04 8:25 ` Joonsoo Kim
2013-09-04 8:25 ` Joonsoo Kim
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