From: Tejun Heo <tj@kernel.org>
To: Christoph Lameter <cl@gentwo.org>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
David Rientjes <rientjes@google.com>,
Mike Galbraith <umgwanakikbuti@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Vladimir Davydov <vdavydov@parallels.com>,
Johannes Weiner <hannes@cmpxchg.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Rik van Riel <riel@redhat.com>,
Wanpeng Li <liwanp@linux.vnet.ibm.com>,
Zhang Yanfei <zhangyanfei@cn.fujitsu.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Jianyu Zhan <nasa4836@gmail.com>, malc <av1474@comtv.ru>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Fabian Frederick <fabf@skynet.be>,
Tony Luck <tony.luck@intel.com>,
linux-mm@kvack.org, linux-hotplug@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC Patch V1 07/30] mm: Use cpu_to_mem()/numa_mem_id() to support memoryless node
Date: Fri, 11 Jul 2014 12:24:51 -0400 [thread overview]
Message-ID: <20140711162451.GD30865@htj.dyndns.org> (raw)
In-Reply-To: <alpine.DEB.2.11.1407111117560.27592@gentwo.org>
On Fri, Jul 11, 2014 at 11:19:14AM -0500, Christoph Lameter wrote:
> Yes that works. But if we want a consistent node to allocate from (and
> avoid the fallbacks) then we need this patch. I think this is up to those
> needing memoryless nodes to figure out what semantics they need.
I'm not following what you're saying. Are you saying that we need to
spread numa_mem_id() all over the place for GFP_THISNODE users on
memless nodes? There aren't that many users of GFP_THISNODE.
Wouldn't it make far more sense to just change them? Or just
introduce a new GFP flag GFP_CLOSE_OR_BUST which allows falling back
to the nearest local node for memless nodes. There's no reason to
leak this information outside allocator proper.
Thanks.
--
tejun
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next prev parent reply other threads:[~2014-07-11 16:24 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-11 7:37 [RFC Patch V1 00/30] Enable memoryless node on x86 platforms Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 01/30] mm, kernel: Use cpu_to_mem()/numa_mem_id() to support memoryless node Jiang Liu
2014-07-11 15:14 ` Paul E. McKenney
2014-07-21 17:15 ` Nishanth Aravamudan
2014-07-21 17:33 ` Paul E. McKenney
2014-07-12 12:32 ` Jens Axboe
2014-07-11 7:37 ` [RFC Patch V1 02/30] mm, sched: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 03/30] mm, net: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 04/30] mm, netfilter: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 05/30] mm, perf: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 06/30] mm, tracing: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 07/30] mm: " Jiang Liu
2014-07-11 13:51 ` Christoph Lameter
2014-07-11 14:42 ` Tejun Heo
2014-07-11 15:13 ` Christoph Lameter
2014-07-11 15:21 ` Tejun Heo
2014-07-11 15:33 ` Tejun Heo
2014-07-11 15:55 ` Christoph Lameter
2014-07-11 15:58 ` Tejun Heo
2014-07-11 16:04 ` Christoph Lameter
2014-07-11 15:58 ` Christoph Lameter
2014-07-11 16:01 ` Tejun Heo
2014-07-11 16:19 ` Christoph Lameter
2014-07-11 16:24 ` Tejun Heo [this message]
2014-07-11 17:29 ` Christoph Lameter
2014-07-11 18:28 ` Tejun Heo
2014-07-11 19:11 ` Christoph Lameter
2014-07-23 3:16 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 08/30] mm, thp: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 09/30] mm, memcg: " Jiang Liu
2014-07-18 7:36 ` Michal Hocko
2014-07-23 3:18 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 10/30] mm, xfrm: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 11/30] mm, char/mspec.c: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 12/30] mm, IB/qib: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 13/30] mm, i40e: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 14/30] mm, i40evf: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 15/30] mm, igb: " Jiang Liu
2014-07-21 17:42 ` Nishanth Aravamudan
2014-07-21 19:53 ` Alexander Duyck
2014-07-21 21:09 ` Nishanth Aravamudan
2014-07-23 3:20 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 16/30] mm, ixgbe: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 17/30] mm, intel_powerclamp: " Jiang Liu
2014-07-21 17:38 ` Nishanth Aravamudan
2014-07-11 7:37 ` [RFC Patch V1 18/30] mm, bnx2fc: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 19/30] mm, bnx2i: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 20/30] mm, fcoe: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 21/30] mm, irqchip: " Jiang Liu
2014-07-18 12:40 ` Jason Cooper
2014-07-23 3:47 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 22/30] mm, of: " Jiang Liu
2014-07-21 17:52 ` Nishanth Aravamudan
2014-07-28 13:30 ` Grant Likely
2014-07-28 19:26 ` Nishanth Aravamudan
2014-07-11 7:37 ` [RFC Patch V1 23/30] mm, x86: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 24/30] mm, x86/platform/uv: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 25/30] mm, x86, kvm: " Jiang Liu
2014-07-11 7:44 ` Paolo Bonzini
2014-07-11 7:37 ` [RFC Patch V1 26/30] mm, x86, perf: " Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 27/30] x86, numa: Kill useless code to improve code readability Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 28/30] mm: Update _mem_id_[] for every possible CPU when memory configuration changes Jiang Liu
2014-07-21 17:47 ` Nishanth Aravamudan
2014-07-23 8:16 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 29/30] mm, x86: Enable memoryless node support to better support CPU/memory hotplug Jiang Liu
2014-07-24 23:26 ` Nishanth Aravamudan
2014-07-25 1:41 ` Jiang Liu
2014-07-11 7:37 ` [RFC Patch V1 30/30] x86, NUMA: Online node earlier when doing CPU hot-addition Jiang Liu
2014-07-24 23:30 ` Nishanth Aravamudan
2014-07-25 1:43 ` Jiang Liu
2014-07-25 1:44 ` Jiang Liu
2014-07-11 8:29 ` [RFC Patch V1 00/30] Enable memoryless node on x86 platforms Peter Zijlstra
2014-07-11 15:33 ` Greg KH
2014-07-11 20:02 ` Dave Hansen
2014-07-11 20:20 ` Andi Kleen
2014-07-11 20:51 ` Peter Zijlstra
2014-07-11 21:58 ` Andi Kleen
2014-07-15 1:18 ` David Rientjes
2014-07-11 23:51 ` H. Peter Anvin
2014-07-11 22:40 ` Jiri Kosina
2014-07-15 1:19 ` David Rientjes
2014-07-18 17:48 ` Nish Aravamudan
2014-07-21 17:23 ` Nishanth Aravamudan
2014-07-21 17:41 ` Tony Luck
2014-07-21 17:57 ` Nishanth Aravamudan
2014-07-23 8:20 ` Jiang Liu
2014-07-24 23:32 ` Nishanth Aravamudan
2014-07-25 1:50 ` Jiang Liu
2014-08-18 23:30 ` Nishanth Aravamudan
2014-07-21 20:06 ` Peter Zijlstra
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