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From: Waiman Long <waiman.long@hp.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: linux-arch@vger.kernel.org, Rik van Riel <riel@redhat.com>,
	Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
	Gleb Natapov <gleb@redhat.com>,
	kvm@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
	Scott J Norton <scott.norton@hp.com>,
	x86@kernel.org, Paolo Bonzini <paolo.bonzini@gmail.com>,
	linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	Ingo Molnar <mingo@redhat.com>, Chegu Vinod <chegu_vinod@hp.com>,
	David Vrabel <david.vrabel@citrix.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	xen-devel@lists.xenproject.org,
	Thomas Gleixner <tglx@linutronix.de>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH v9 05/19] qspinlock: Optimize for smaller NR_CPUS
Date: Wed, 23 Apr 2014 13:43:58 -0400	[thread overview]
Message-ID: <5357FBDE.4040400@hp.com> (raw)
In-Reply-To: <20140423145649.GE2777@phenom.dumpdata.com>

On 04/23/2014 10:56 AM, Konrad Rzeszutek Wilk wrote:
> On Wed, Apr 23, 2014 at 10:23:43AM -0400, Waiman Long wrote:
>> On 04/18/2014 05:40 PM, Waiman Long wrote:
>>> On 04/18/2014 03:05 PM, Peter Zijlstra wrote:
>>>> On Fri, Apr 18, 2014 at 01:52:50PM -0400, Waiman Long wrote:
>>>>> I am confused by your notation.
>>>> Nah, I think I was confused :-) Make the 1 _Q_LOCKED_VAL though, as
>>>> that's the proper constant to use.
>>> Everyone gets confused once in a while:-) I have plenty of that myself.
>>>
>>> I will change 1 to _Q_LOCKED_VAL as suggested.
>>>
>>> -Longman
>>
>> The attached patch file contains the additional changes that I had
>> made to qspinlock.c file so far. Please let me know if you or others
>> have any additional feedbacks or changes that will need to go to the
>> next version of the patch series.
>>
>> I am going to take vacation starting from tomorrow and will be back
>> on 5/5 (Mon). So I will not be able to respond to emails within this
>> period.
>>
>> BTW, is there any chance that this patch can be merged to 3.16?
> Um, it needs to have Acks from KVM and Xen maintainers who have not
> done so. Also Peter needs to chime in. (BTW, please CC
> xen-devel@lists.xenproject.org next time you post so that David and Boris
> can take a peek at it).

I will cc xen-devel@lists.xenproject.org when I sent out the next patch.

> I would strongly recommend you put all your patches on github (free git
> service) so that we can test it and poke it at during your vacation
> (and even after).
>

I am not used to setting up a public repo in github. If I create a repo 
there, should I put a snapshot of the whole kernel source tree or just a 
portion of the relevant files as the base? With the later, it won't be 
buildable.

-Longman

  reply	other threads:[~2014-04-23 17:43 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-17 15:03 [PATCH v9 00/19] qspinlock: a 4-byte queue spinlock with PV support Waiman Long
2014-04-17 15:03 ` [PATCH v9 01/19] qspinlock: A simple generic 4-byte queue spinlock Waiman Long
2014-04-17 15:03 ` [PATCH v9 02/19] qspinlock, x86: Enable x86-64 to use " Waiman Long
2014-04-17 15:03 ` [PATCH v9 03/19] qspinlock: Add pending bit Waiman Long
2014-04-17 15:42   ` Peter Zijlstra
2014-04-17 21:20     ` Waiman Long
     [not found]     ` <5350459F.5010903@hp.com>
2014-04-18  8:13       ` Peter Zijlstra
2014-04-18 17:07         ` Waiman Long
2014-04-18  7:42   ` Ingo Molnar
2014-04-18 16:23     ` Waiman Long
2014-04-18 16:35       ` Konrad Rzeszutek Wilk
2014-04-18 18:12         ` Waiman Long
2014-04-17 15:03 ` [PATCH v9 04/19] qspinlock: Extract out the exchange of tail code word Waiman Long
2014-04-17 15:03 ` [PATCH v9 05/19] qspinlock: Optimize for smaller NR_CPUS Waiman Long
2014-04-17 15:50   ` Peter Zijlstra
2014-04-17 21:29     ` Waiman Long
2014-04-17 15:51   ` Peter Zijlstra
2014-04-17 21:33     ` Waiman Long
2014-04-17 15:56   ` Peter Zijlstra
2014-04-17 21:46     ` Waiman Long
2014-04-18  8:27       ` Peter Zijlstra
2014-04-18 17:52         ` Waiman Long
2014-04-18 19:05           ` Peter Zijlstra
2014-04-18 21:40             ` Waiman Long
2014-04-23 14:23               ` Waiman Long
2014-04-23 14:56                 ` Konrad Rzeszutek Wilk
2014-04-23 17:43                   ` Waiman Long [this message]
2014-04-23 17:55                     ` Konrad Rzeszutek Wilk
2014-04-23 22:24                       ` Waiman Long
2014-04-23 23:48                         ` Waiman Long
2014-04-17 15:58   ` Peter Zijlstra
2014-04-17 21:49     ` Waiman Long
2014-04-18  7:46       ` Ingo Molnar
2014-04-18 16:26         ` Waiman Long
2014-04-19  9:24           ` Ingo Molnar
2014-04-17 15:03 ` [PATCH v9 06/19] qspinlock: prolong the stay in the pending bit path Waiman Long
2014-04-17 15:03 ` [PATCH v9 07/19] qspinlock: Use a simple write to grab the lock, if applicable Waiman Long
2014-04-17 16:54   ` Peter Zijlstra
2014-04-17 15:04 ` [PATCH v9 08/19] qspinlock: Make a new qnode structure to support virtualization Waiman Long
2014-04-17 15:04 ` [PATCH v9 09/19] qspinlock: Prepare for unfair lock support Waiman Long
2014-04-17 15:04 ` [PATCH v9 10/19] qspinlock, x86: Allow unfair spinlock in a virtual guest Waiman Long
2014-04-17 15:04 ` [PATCH v9 11/19] qspinlock: Split the MCS queuing code into a separate slowerpath Waiman Long
2014-04-17 15:04 ` [PATCH v9 12/19] unfair qspinlock: Variable frequency lock stealing mechanism Waiman Long
2014-04-17 15:04 ` [PATCH v9 13/19] unfair qspinlock: Enable lock stealing in lock waiters Waiman Long
2014-04-17 15:04 ` [PATCH v9 14/19] pvqspinlock, x86: Rename paravirt_ticketlocks_enabled Waiman Long
2014-04-17 15:04 ` [PATCH v9 15/19] pvqspinlock, x86: Add PV data structure & methods Waiman Long
2014-04-17 15:04 ` [PATCH v9 16/19] pvqspinlock: Enable coexistence with the unfair lock Waiman Long
2014-04-17 15:04 ` [PATCH v9 17/19] pvqspinlock: Add qspinlock para-virtualization support Waiman Long
2014-04-17 15:04 ` [PATCH v9 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM Waiman Long
2014-04-17 15:04 ` [PATCH v9 19/19] pvqspinlock, x86: Enable PV qspinlock for XEN Waiman Long
     [not found] ` <1397747051-15401-5-git-send-email-Waiman.Long@hp.com>
2014-04-17 15:49   ` [PATCH v9 04/19] qspinlock: Extract out the exchange of tail code word Peter Zijlstra
2014-04-17 21:28     ` Waiman Long
2014-04-18  8:15       ` Peter Zijlstra
2014-04-18 17:32         ` Waiman Long
2014-04-18 17:53           ` Peter Zijlstra
2014-04-18 18:13             ` Waiman Long
     [not found] ` <1397747051-15401-7-git-send-email-Waiman.Long@hp.com>
2014-04-17 16:36   ` [PATCH v9 06/19] qspinlock: prolong the stay in the pending bit path Peter Zijlstra
2014-04-18  1:46     ` Waiman Long
2014-04-18  8:33       ` Peter Zijlstra
2014-04-18 18:07         ` Waiman Long
2014-04-17 17:23 ` [PATCH v9 00/19] qspinlock: a 4-byte queue spinlock with PV support Konrad Rzeszutek Wilk
2014-04-17 17:40   ` Raghavendra K T
2014-04-18  1:48   ` Waiman Long
2014-04-18 13:18     ` Konrad Rzeszutek Wilk
2014-04-18 17:05       ` Waiman Long
     [not found]   ` <5350120C.40607@linux.vnet.ibm.com>
2014-04-18  1:50     ` Waiman Long
2014-04-27 18:09 ` Raghavendra K T
     [not found] ` <535D47D3.20202@linux.vnet.ibm.com>
2014-05-07 15:00   ` Waiman Long

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