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From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
	David Rientjes <rientjes@google.com>,
	Pekka Enberg <penberg@cs.helsinki.fi>,
	Nick Piggin <npiggin@suse.de>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	haicheng.li@intel.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap
Date: Fri, 26 Feb 2010 16:57:55 +0100	[thread overview]
Message-ID: <20100226155755.GE16335@basil.fritz.box> (raw)
In-Reply-To: <alpine.DEB.2.00.1002260904311.6641@router.home>

On Fri, Feb 26, 2010 at 09:04:56AM -0600, Christoph Lameter wrote:
> On Fri, 26 Feb 2010, Andi Kleen wrote:
> 
> > Memory hotplug with node add never quite worked on x86 before,
> > for various reasons not related to slab.
> 
> Ok but why did things break in such a big way?

1) numa memory hotadd never worked
2) the rest just bitrotted because nobody tested it.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.

WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
	David Rientjes <rientjes@google.com>,
	Pekka Enberg <penberg@cs.helsinki.fi>,
	Nick Piggin <npiggin@suse.de>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	haicheng.li@intel.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap
Date: Fri, 26 Feb 2010 16:57:55 +0100	[thread overview]
Message-ID: <20100226155755.GE16335@basil.fritz.box> (raw)
In-Reply-To: <alpine.DEB.2.00.1002260904311.6641@router.home>

On Fri, Feb 26, 2010 at 09:04:56AM -0600, Christoph Lameter wrote:
> On Fri, 26 Feb 2010, Andi Kleen wrote:
> 
> > Memory hotplug with node add never quite worked on x86 before,
> > for various reasons not related to slab.
> 
> Ok but why did things break in such a big way?

1) numa memory hotadd never worked
2) the rest just bitrotted because nobody tested it.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.

--
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  parent reply	other threads:[~2010-02-26 15:57 UTC|newest]

Thread overview: 174+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-11 20:53 [PATCH] [0/4] Update slab memory hotplug series Andi Kleen
2010-02-11 20:53 ` Andi Kleen
2010-02-11 20:54 ` [PATCH] [1/4] SLAB: Handle node-not-up case in fallback_alloc() v2 Andi Kleen
2010-02-11 20:54   ` Andi Kleen
2010-02-11 21:41   ` David Rientjes
2010-02-11 21:41     ` David Rientjes
2010-02-11 21:55     ` Andi Kleen
2010-02-11 21:55       ` Andi Kleen
2010-02-15  6:04   ` Nick Piggin
2010-02-15  6:04     ` Nick Piggin
2010-02-15 10:07     ` Andi Kleen
2010-02-15 10:07       ` Andi Kleen
2010-02-15 10:22       ` Nick Piggin
2010-02-15 10:22         ` Nick Piggin
2010-02-11 20:54 ` [PATCH] [2/4] SLAB: Separate node initialization into separate function Andi Kleen
2010-02-11 20:54   ` Andi Kleen
2010-02-11 21:44   ` David Rientjes
2010-02-11 21:44     ` David Rientjes
2010-02-11 20:54 ` [PATCH] [3/4] SLAB: Set up the l3 lists for the memory of freshly added memory v2 Andi Kleen
2010-02-11 20:54   ` Andi Kleen
2010-02-11 21:45   ` David Rientjes
2010-02-11 21:45     ` David Rientjes
2010-02-15  6:06     ` Nick Piggin
2010-02-15  6:06       ` Nick Piggin
2010-02-15 21:47       ` David Rientjes
2010-02-15 21:47         ` David Rientjes
2010-02-16 14:04         ` Nick Piggin
2010-02-16 14:04           ` Nick Piggin
2010-02-16 20:45           ` Pekka Enberg
2010-02-16 20:45             ` Pekka Enberg
2010-02-11 20:54 ` [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap Andi Kleen
2010-02-11 20:54   ` Andi Kleen
2010-02-11 21:45   ` David Rientjes
2010-02-11 21:45     ` David Rientjes
2010-02-15  6:15   ` Nick Piggin
2010-02-15  6:15     ` Nick Piggin
2010-02-15 10:32     ` Andi Kleen
2010-02-15 10:32       ` Andi Kleen
2010-02-15 10:41       ` Nick Piggin
2010-02-15 10:41         ` Nick Piggin
2010-02-15 10:52         ` Andi Kleen
2010-02-15 10:52           ` Andi Kleen
2010-02-15 11:01           ` Nick Piggin
2010-02-15 11:01             ` Nick Piggin
2010-02-15 15:30             ` Andi Kleen
2010-02-15 15:30               ` Andi Kleen
2010-02-19 18:22             ` Christoph Lameter
2010-02-19 18:22               ` Christoph Lameter
2010-02-20  9:01               ` Andi Kleen
2010-02-20  9:01                 ` Andi Kleen
2010-02-22 10:53                 ` Pekka Enberg
2010-02-22 10:53                   ` Pekka Enberg
2010-02-22 14:31                   ` Andi Kleen
2010-02-22 14:31                     ` Andi Kleen
2010-02-22 16:11                     ` Pekka Enberg
2010-02-22 16:11                       ` Pekka Enberg
2010-02-22 20:20                       ` Andi Kleen
2010-02-22 20:20                         ` Andi Kleen
2010-02-24 15:49                 ` Christoph Lameter
2010-02-24 15:49                   ` Christoph Lameter
2010-02-25  7:26                   ` Pekka Enberg
2010-02-25  7:26                     ` Pekka Enberg
2010-02-25  8:01                     ` David Rientjes
2010-02-25  8:01                       ` David Rientjes
2010-02-25 18:30                       ` Christoph Lameter
2010-02-25 18:30                         ` Christoph Lameter
2010-02-25 21:45                         ` David Rientjes
2010-02-25 21:45                           ` David Rientjes
2010-02-25 22:31                           ` Christoph Lameter
2010-02-25 22:31                             ` Christoph Lameter
2010-02-26 10:45                             ` Pekka Enberg
2010-02-26 10:45                               ` Pekka Enberg
2010-02-26 11:43                               ` Andi Kleen
2010-02-26 11:43                                 ` Andi Kleen
2010-02-26 12:35                                 ` Pekka Enberg
2010-02-26 12:35                                   ` Pekka Enberg
2010-02-26 14:08                                   ` Andi Kleen
2010-02-26 14:08                                     ` Andi Kleen
2010-02-26  1:09                         ` KAMEZAWA Hiroyuki
2010-02-26  1:09                           ` KAMEZAWA Hiroyuki
2010-02-26 11:41                         ` Andi Kleen
2010-02-26 11:41                           ` Andi Kleen
2010-02-26 15:04                           ` Christoph Lameter
2010-02-26 15:04                             ` Christoph Lameter
2010-02-26 15:05                             ` Christoph Lameter
2010-02-26 15:05                               ` Christoph Lameter
2010-02-26 15:59                               ` Andi Kleen
2010-02-26 15:59                                 ` Andi Kleen
2010-02-26 15:57                             ` Andi Kleen [this message]
2010-02-26 15:57                               ` Andi Kleen
2010-02-26 17:24                               ` Christoph Lameter
2010-02-26 17:24                                 ` Christoph Lameter
2010-02-26 17:31                                 ` Andi Kleen
2010-02-26 17:31                                   ` Andi Kleen
2010-03-01  1:59                                   ` KAMEZAWA Hiroyuki
2010-03-01  1:59                                     ` KAMEZAWA Hiroyuki
2010-03-01 10:27                                     ` David Rientjes
2010-03-01 10:27                                       ` David Rientjes
2010-02-27  0:01                                 ` David Rientjes
2010-02-27  0:01                                   ` David Rientjes
2010-03-01 10:24                                   ` [patch] slab: add memory hotplug support David Rientjes
2010-03-01 10:24                                     ` David Rientjes
2010-03-02  5:53                                     ` Pekka Enberg
2010-03-02  5:53                                       ` Pekka Enberg
2010-03-02 20:20                                       ` Christoph Lameter
2010-03-02 20:20                                         ` Christoph Lameter
2010-03-02 21:03                                         ` David Rientjes
2010-03-02 21:03                                           ` David Rientjes
2010-03-03  1:28                                         ` KAMEZAWA Hiroyuki
2010-03-03  1:28                                           ` KAMEZAWA Hiroyuki
2010-03-03  2:39                                           ` David Rientjes
2010-03-03  2:39                                             ` David Rientjes
2010-03-03  2:51                                             ` KAMEZAWA Hiroyuki
2010-03-03  2:51                                               ` KAMEZAWA Hiroyuki
2010-03-02 12:53                                     ` Andi Kleen
2010-03-02 12:53                                       ` Andi Kleen
2010-03-02 15:04                                       ` Pekka Enberg
2010-03-02 15:04                                         ` Pekka Enberg
2010-03-03 14:34                                         ` Andi Kleen
2010-03-03 14:34                                           ` Andi Kleen
2010-03-03 15:46                                           ` Christoph Lameter
2010-03-03 15:46                                             ` Christoph Lameter
2010-03-02 21:17                                       ` David Rientjes
2010-03-02 21:17                                         ` David Rientjes
2010-03-05  6:20                                     ` Nick Piggin
2010-03-05  6:20                                       ` Nick Piggin
2010-03-05 12:47                                       ` Anca Emanuel
2010-03-05 12:47                                         ` Anca Emanuel
2010-03-05 13:58                                         ` Anca Emanuel
2010-03-05 13:58                                           ` Anca Emanuel
2010-03-05 14:11                                         ` Christoph Lameter
2010-03-05 14:11                                           ` Christoph Lameter
2010-03-08  3:06                                           ` Andi Kleen
2010-03-08  3:06                                             ` Andi Kleen
2010-03-08  2:58                                         ` Andi Kleen
2010-03-08  2:58                                           ` Andi Kleen
2010-03-08 23:19                                       ` David Rientjes
2010-03-08 23:19                                         ` David Rientjes
2010-03-09 13:46                                         ` Nick Piggin
2010-03-09 13:46                                           ` Nick Piggin
2010-03-22 17:28                                           ` Pekka Enberg
2010-03-22 17:28                                             ` Pekka Enberg
2010-03-22 21:12                                             ` Nick Piggin
2010-03-22 21:12                                               ` Nick Piggin
2010-03-28  2:13                                           ` David Rientjes
2010-03-28  2:13                                             ` David Rientjes
2010-03-28  2:40                                             ` [patch v2] " David Rientjes
2010-03-28  2:40                                               ` David Rientjes
2010-03-30  9:01                                               ` Pekka Enberg
2010-03-30  9:01                                                 ` Pekka Enberg
2010-03-30 16:43                                                 ` Christoph Lameter
2010-03-30 16:43                                                   ` Christoph Lameter
2010-04-04 20:45                                                   ` David Rientjes
2010-04-04 20:45                                                     ` David Rientjes
2010-04-07 16:29                                               ` Pekka Enberg
2010-04-07 16:29                                                 ` Pekka Enberg
2010-02-25 18:34                     ` [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap Christoph Lameter
2010-02-25 18:34                       ` Christoph Lameter
2010-02-25 18:46                       ` Pekka Enberg
2010-02-25 18:46                         ` Pekka Enberg
2010-02-25 19:19                         ` Christoph Lameter
2010-02-25 19:19                           ` Christoph Lameter
2010-03-02 12:55                         ` Andi Kleen
2010-03-02 12:55                           ` Andi Kleen
2010-02-19 18:22       ` Christoph Lameter
2010-02-19 18:22         ` Christoph Lameter
2010-02-22 10:57         ` Pekka Enberg
2010-02-22 10:57           ` Pekka Enberg
2010-02-13 10:24 ` [PATCH] [0/4] Update slab memory hotplug series Pekka Enberg
2010-02-13 10:24   ` Pekka Enberg
  -- strict thread matches above, loose matches on Subject: below --
2010-02-03 21:39 [PATCH] [0/4] SLAB: Fix a couple of slab memory hotadd issues Andi Kleen
2010-02-03 21:39 ` [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap Andi Kleen
2010-02-03 21:39   ` Andi Kleen
2010-02-05 19:16   ` Christoph Lameter
2010-02-05 19:16     ` Christoph Lameter

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