From: Ankita Garg <ankita@in.ibm.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: paulmck@linux.vnet.ibm.com, Matthew Garrett <mjg59@srcf.ucam.org>,
Kyungmin Park <kmpark@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
linux-pm@lists.linux-foundation.org, svaidy@linux.vnet.ibm.com,
thomas.abraham@linaro.org
Subject: Re: [PATCH 00/10] mm: Linux VM Infrastructure to support Memory Power Management
Date: Wed, 15 Jun 2011 22:23:21 +0530 [thread overview]
Message-ID: <20110615165321.GC23151@in.ibm.com> (raw)
In-Reply-To: <20110610200233.5ddd5a31@infradead.org>
Hi,
On Fri, Jun 10, 2011 at 08:02:33PM -0700, Arjan van de Ven wrote:
> On Fri, 10 Jun 2011 12:37:13 -0700
> "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
>
> > On Fri, Jun 10, 2011 at 08:23:29PM +0100, Matthew Garrett wrote:
> > > On Fri, Jun 10, 2011 at 11:47:38AM -0700, Paul E. McKenney wrote:
> > >
> > > > And if I understand you correctly, then the patches that Ankita
> > > > posted should help your self-refresh case, along with the
> > > > originally intended the power-down case and special-purpose use
> > > > of memory case.
> > >
> > > Yeah, I'd hope so once we actually have capable hardware.
> >
> > Cool!!!
> >
> > So Ankita's patchset might be useful to you at some point, then.
> >
> > Does it look like a reasonable implementation?
>
> as someone who is working on hardware that is PASR capable right now,
> I have to admit that our plan was to just hook into the buddy allocator,
> and use PASR on the top level of buddy (eg PASR off blocks that are
> free there, and PASR them back on once an allocation required the block
> to be broken up)..... that looked the very most simple to me.
>
The maximum order in buddy allocator is by default 1k pages. Isn't this
too small a granularity to track blocks that might comprise a PASR unit?
> Maybe something much more elaborate is needed, but I didn't see why so
> far.
>
>
--
Regards,
Ankita Garg (ankita@in.ibm.com)
Linux Technology Center
IBM India Systems & Technology Labs,
Bangalore, India
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next prev parent reply other threads:[~2011-06-15 16:53 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-27 12:31 [PATCH 00/10] mm: Linux VM Infrastructure to support Memory Power Management Ankita Garg
2011-05-27 12:31 ` [PATCH 01/10] mm: Introduce the memory regions data structure Ankita Garg
2011-05-27 15:30 ` Dave Hansen
2011-05-27 18:20 ` Vaidyanathan Srinivasan
2011-05-27 21:31 ` Dave Hansen
2011-05-29 8:16 ` Ankita Garg
2011-05-31 17:34 ` Dave Hansen
2011-06-02 8:54 ` Ankita Garg
2011-05-27 12:31 ` [PATCH 02/10] mm: Helper routines Ankita Garg
2011-05-27 12:31 ` [PATCH 03/10] mm: Init zones inside memory regions Ankita Garg
2011-05-27 12:31 ` [PATCH 04/10] mm: Refer to zones from " Ankita Garg
2011-05-27 12:31 ` [PATCH 05/10] mm: Create zonelists Ankita Garg
2011-05-27 12:31 ` [PATCH 06/10] mm: Verify zonelists Ankita Garg
2011-05-27 12:31 ` [PATCH 07/10] mm: Modify vmstat Ankita Garg
2011-05-27 12:31 ` [PATCH 08/10] mm: Modify vmscan Ankita Garg
2011-05-27 12:31 ` [PATCH 09/10] mm: Reflect memory region changes in zoneinfo Ankita Garg
2011-05-27 12:31 ` [PATCH 10/10] mm: Create memory regions at boot-up Ankita Garg
2011-05-28 14:39 ` Jean-Christophe PLAGNIOL-VILLARD
2011-05-28 7:56 ` [PATCH 00/10] mm: Linux VM Infrastructure to support Memory Power Management Andrew Morton
2011-05-28 13:16 ` Ankita Garg
2011-06-09 18:52 ` Paul E. McKenney
2011-06-10 0:51 ` Kyungmin Park
2011-06-10 15:11 ` Paul E. McKenney
2011-06-10 15:59 ` Matthew Garrett
2011-06-10 16:55 ` Paul E. McKenney
2011-06-10 17:05 ` Matthew Garrett
2011-06-10 17:19 ` Paul E. McKenney
2011-06-10 17:23 ` Matthew Garrett
2011-06-10 17:52 ` Paul E. McKenney
2011-06-10 18:08 ` Matthew Garrett
2011-06-10 18:47 ` Paul E. McKenney
2011-06-10 19:23 ` Matthew Garrett
2011-06-10 19:37 ` Paul E. McKenney
2011-06-10 20:12 ` Matthew Garrett
2011-06-11 3:02 ` Arjan van de Ven
2011-06-11 17:06 ` Paul E. McKenney
2011-06-11 17:26 ` Arjan van de Ven
2011-06-12 23:07 ` Paul E. McKenney
2011-06-13 14:28 ` Arjan van de Ven
2011-06-13 23:04 ` Paul E. McKenney
2011-06-14 8:51 ` Ankita Garg
2011-06-15 16:53 ` Ankita Garg [this message]
2011-06-18 4:08 ` Arjan van de Ven
2011-06-10 17:33 ` Ankita Garg
2011-06-11 17:08 ` Paul E. McKenney
2011-07-12 5:31 ` amit kachhap
2011-06-13 4:47 ` KAMEZAWA Hiroyuki
2011-06-16 4:20 ` Ankita Garg
2011-06-16 9:12 ` KAMEZAWA Hiroyuki
2011-06-17 15:28 ` Ankita Garg
2011-06-19 23:53 ` KAMEZAWA Hiroyuki
2011-06-16 16:04 ` Dave Hansen
2011-06-17 10:03 ` Ankita Garg
2011-06-29 13:00 ` Ankita Garg
2011-06-29 17:06 ` Dave Hansen
2011-06-29 17:42 ` Ankita Garg
2011-06-29 17:59 ` Dave Hansen
2011-06-29 18:17 ` Vaidyanathan Srinivasan
2011-06-30 4:37 ` Ankita Garg
2011-06-29 20:11 ` Andi Kleen
2011-06-30 5:11 ` Ankita Garg
2011-06-29 18:07 ` Vaidyanathan Srinivasan
2011-07-06 8:45 ` Pekka Enberg
2011-07-06 9:01 ` Pekka Enberg
2011-07-06 16:50 ` Vaidyanathan Srinivasan
2011-07-06 16:41 ` Vaidyanathan Srinivasan
2011-07-06 20:20 ` david
2011-07-07 4:54 ` Ankita Garg
2011-07-07 18:00 ` Pekka Enberg
2011-07-08 1:32 ` david
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