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From: Nigel Cunningham <ncunningham@crca.org.au>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	linux-pm@lists.linux-foundation.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during	suspend/resume (was: Re: Memory allocations in .suspend	became very unreliable)
Date: Fri, 22 Jan 2010 07:42:25 +1100	[thread overview]
Message-ID: <4B58BC31.1040406@crca.org.au> (raw)
In-Reply-To: <201001212121.50272.rjw@sisk.pl>

Hi.

Rafael J. Wysocki wrote:
> On Thursday 21 January 2010, KOSAKI Motohiro wrote:
>>  - Ask all drivers how much they require memory before starting suspend and
>>    Make enough free memory at first?
> 
> That's equivalent to reworking all drivers to allocate memory before suspend
> eg. with the help of PM notifiers.  Which IMHO is unrealistic.

What's unrealistic about it? I can see that it would be a lot of work,
but unrealistic? To me, at this stage, it sounds like the ideal solution.

Regards,

Nigel

WARNING: multiple messages have this Message-ID (diff)
From: Nigel Cunningham <ncunningham@crca.org.au>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	linux-pm@lists.linux-foundation.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during	suspend/resume (was: Re: Memory allocations in .suspend	became very unreliable)
Date: Fri, 22 Jan 2010 07:42:25 +1100	[thread overview]
Message-ID: <4B58BC31.1040406@crca.org.au> (raw)
In-Reply-To: <201001212121.50272.rjw@sisk.pl>

Hi.

Rafael J. Wysocki wrote:
> On Thursday 21 January 2010, KOSAKI Motohiro wrote:
>>  - Ask all drivers how much they require memory before starting suspend and
>>    Make enough free memory at first?
> 
> That's equivalent to reworking all drivers to allocate memory before suspend
> eg. with the help of PM notifiers.  Which IMHO is unrealistic.

What's unrealistic about it? I can see that it would be a lot of work,
but unrealistic? To me, at this stage, it sounds like the ideal solution.

Regards,

Nigel

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  parent reply	other threads:[~2010-01-21 20:40 UTC|newest]

Thread overview: 183+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-15  9:59 Memory allocations in .suspend became very unreliable Maxim Levitsky
2010-01-15 10:24 ` Romit Dasgupta
2010-01-15 10:34   ` Maxim Levitsky
2010-01-15 22:03 ` Rafael J. Wysocki
2010-01-15 23:56   ` Maxim Levitsky
2010-01-16  0:57     ` Rafael J. Wysocki
2010-01-16 21:44       ` Maxim Levitsky
2010-01-16 22:17         ` Rafael J. Wysocki
2010-01-17  0:38           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: Memory allocations in .suspend became very unreliable) Rafael J. Wysocki
2010-01-17  0:38           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-17  0:38             ` Rafael J. Wysocki
2010-01-17  1:24             ` Oliver Neukum
2010-01-17  1:24               ` Oliver Neukum
2010-01-17 13:27               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-17 13:27               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-17 13:27                 ` Rafael J. Wysocki
2010-01-17 13:36                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-17 13:36                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-17 13:36                   ` Rafael J. Wysocki
2010-01-17 18:58                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Benjamin Herrenschmidt
2010-01-17 18:58                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Benjamin Herrenschmidt
2010-01-17 18:58                   ` Benjamin Herrenschmidt
2010-01-17 23:00                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-17 23:00                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-17 23:00                     ` Rafael J. Wysocki
2010-01-18  7:53                     ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Oliver Neukum
2010-01-18  7:53                     ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Oliver Neukum
2010-01-18  7:53                       ` Oliver Neukum
2010-01-18 16:17                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Alan Stern
2010-01-18 16:17                       ` [linux-pm] " Alan Stern
2010-01-18 16:17                         ` Alan Stern
2010-01-18 20:59                         ` Rafael J. Wysocki
2010-01-18 20:59                           ` Rafael J. Wysocki
2010-01-19 15:13                           ` Alan Stern
2010-01-19 15:13                           ` [linux-pm] " Alan Stern
2010-01-19 15:13                             ` Alan Stern
2010-01-18 20:59                         ` Rafael J. Wysocki
2010-01-18 20:56                       ` Rafael J. Wysocki
2010-01-18 20:56                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-18 20:56                         ` Rafael J. Wysocki
2010-01-18 21:55                     ` Benjamin Herrenschmidt
2010-01-18 21:55                       ` Benjamin Herrenschmidt
2010-01-18 23:33                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-18 23:33                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-18 23:33                         ` Rafael J. Wysocki
2010-01-18 21:55                     ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Benjamin Herrenschmidt
2010-01-17  1:24             ` Oliver Neukum
2010-01-17 13:55             ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-17 13:55               ` Rafael J. Wysocki
2010-01-17 16:21               ` [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Minchan Kim
2010-01-17 16:21                 ` Minchan Kim
2010-01-17 16:23                 ` Minchan Kim
2010-01-17 16:23                   ` Minchan Kim
2010-01-17 16:23                 ` Minchan Kim
2010-01-18  0:25                 ` Rafael J. Wysocki
2010-01-18  0:25                 ` [linux-pm] " Rafael J. Wysocki
2010-01-18  0:25                   ` Rafael J. Wysocki
2010-01-18  2:20                   ` KOSAKI Motohiro
2010-01-18  2:20                     ` KOSAKI Motohiro
2010-01-18 21:06                     ` Rafael J. Wysocki
2010-01-18 21:06                       ` Rafael J. Wysocki
2010-01-19  9:15                       ` Oliver Neukum
2010-01-19  9:15                         ` Oliver Neukum
2010-01-19 20:34                         ` Rafael J. Wysocki
2010-01-19 20:34                         ` [linux-pm] " Rafael J. Wysocki
2010-01-19 20:34                           ` Rafael J. Wysocki
2010-01-19  9:15                       ` Oliver Neukum
2010-01-18 21:06                     ` Rafael J. Wysocki
2010-01-18  2:20                   ` KOSAKI Motohiro
2010-01-17 16:21               ` Minchan Kim
2010-01-18 17:00               ` Oliver Neukum
2010-01-18 17:00               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Oliver Neukum
2010-01-18 17:00                 ` Oliver Neukum
2010-01-18 20:41                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-18 20:41                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-18 20:41                   ` Rafael J. Wysocki
2010-01-19  9:25                   ` Oliver Neukum
2010-01-19  9:25                     ` Oliver Neukum
2010-01-19 20:37                     ` Rafael J. Wysocki
2010-01-19 20:37                       ` Rafael J. Wysocki
2010-01-20 14:05                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Oliver Neukum
2010-01-20 14:05                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Oliver Neukum
2010-01-20 14:05                         ` Oliver Neukum
2010-01-20 21:13                         ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-20 21:13                         ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-20 21:13                           ` Rafael J. Wysocki
2010-01-19 20:37                     ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-19  9:25                   ` Oliver Neukum
2010-01-17 13:55             ` Rafael J. Wysocki
2010-01-18  2:16             ` KOSAKI Motohiro
2010-01-18  2:16             ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-18  2:16               ` KOSAKI Motohiro
2010-01-18 20:55               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-18 20:55               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-18 20:55                 ` Rafael J. Wysocki
2010-01-19  1:19                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " KOSAKI Motohiro
2010-01-19  1:19                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-19  1:19                   ` KOSAKI Motohiro
2010-01-19  3:19                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Benjamin Herrenschmidt
2010-01-19  3:19                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Benjamin Herrenschmidt
2010-01-19  3:19                     ` Benjamin Herrenschmidt
2010-01-19  9:04                     ` Bastien ROUCARIES
2010-01-19  9:04                       ` Bastien ROUCARIES
2010-01-19 23:17                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Benjamin Herrenschmidt
2010-01-19 23:17                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Benjamin Herrenschmidt
2010-01-19 23:17                         ` Benjamin Herrenschmidt
2010-01-20 11:31                         ` Oliver Neukum
2010-01-20 11:31                           ` Oliver Neukum
2010-01-20 21:11                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Benjamin Herrenschmidt
2010-01-20 21:11                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Benjamin Herrenschmidt
2010-01-20 21:11                             ` Benjamin Herrenschmidt
2010-01-20 21:12                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-20 21:12                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-20 21:12                             ` Rafael J. Wysocki
2010-01-20 11:31                         ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Oliver Neukum
2010-01-19  9:04                     ` Bastien ROUCARIES
2010-01-19 20:47                     ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-19 20:47                       ` Rafael J. Wysocki
2010-01-20  0:33                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " KOSAKI Motohiro
2010-01-20  0:33                       ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-20  0:33                         ` KOSAKI Motohiro
2010-01-20 21:21                         ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-20 21:21                         ` Rafael J. Wysocki
2010-01-20 21:21                         ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-20 21:21                           ` Rafael J. Wysocki
2010-01-21  0:47                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " KOSAKI Motohiro
2010-01-21  0:47                           ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-21  0:47                             ` KOSAKI Motohiro
2010-01-21 20:21                             ` Rafael J. Wysocki
2010-01-21 20:21                               ` Rafael J. Wysocki
2010-01-21 20:42                               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Nigel Cunningham
2010-01-21 20:42                               ` Nigel Cunningham [this message]
2010-01-21 20:42                                 ` [linux-pm] " Nigel Cunningham
2010-01-21 21:38                                 ` Rafael J. Wysocki
2010-01-21 21:38                                 ` [linux-pm] " Rafael J. Wysocki
2010-01-21 21:38                                   ` Rafael J. Wysocki
2010-01-22  1:31                               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-22  1:31                                 ` KOSAKI Motohiro
2010-01-22  1:42                                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " KOSAKI Motohiro
2010-01-22  1:42                                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-22  1:42                                   ` KOSAKI Motohiro
2010-01-22 10:11                                   ` Maxim Levitsky
2010-01-22 10:11                                     ` Maxim Levitsky
2010-01-22 21:19                                     ` [Update][PATCH] MM / PM: Force GFP_NOIO during suspend/hibernation and resume Rafael J. Wysocki
2010-01-22 21:19                                       ` Rafael J. Wysocki
2010-01-23  9:29                                       ` Maxim Levitsky
2010-01-23  9:29                                       ` Maxim Levitsky
2010-01-23  9:29                                         ` Maxim Levitsky
2010-01-25 21:49                                         ` Rafael J. Wysocki
2010-01-25 21:49                                           ` Rafael J. Wysocki
2010-01-25 21:52                                           ` Alexey Starikovskiy
2010-01-25 21:52                                             ` Alexey Starikovskiy
2010-01-30 18:56                                             ` Rafael J. Wysocki
2010-01-30 18:56                                               ` Rafael J. Wysocki
2010-01-30 20:42                                               ` Maxim Levitsky
2010-01-30 20:42                                               ` Maxim Levitsky
2010-01-30 20:42                                                 ` Maxim Levitsky
2010-01-30 20:53                                                 ` Rafael J. Wysocki
2010-01-30 20:53                                                 ` Rafael J. Wysocki
2010-01-30 20:53                                                   ` Rafael J. Wysocki
2010-01-30 18:56                                             ` Rafael J. Wysocki
2010-01-25 21:52                                           ` Alexey Starikovskiy
2010-01-25 21:49                                         ` Rafael J. Wysocki
2010-01-22 21:19                                     ` Rafael J. Wysocki
2010-01-22 10:11                                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: Memory allocations in .suspend became very unreliable) Maxim Levitsky
2010-01-22 20:58                                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-22 20:58                                   ` Rafael J. Wysocki
2010-01-22 20:58                                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-22  1:31                               ` KOSAKI Motohiro
2010-01-21 20:21                             ` Rafael J. Wysocki
2010-01-19 20:47                     ` Rafael J. Wysocki
2010-01-30 15:46             ` Maxim Levitsky
2010-01-30 15:46             ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Maxim Levitsky
2010-01-30 15:46               ` Maxim Levitsky
2010-01-30 18:47               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Rafael J. Wysocki
2010-01-30 18:47               ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-30 18:47                 ` Rafael J. Wysocki
2010-01-30 20:37                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Maxim Levitsky
2010-01-30 20:37                 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Maxim Levitsky
2010-01-30 20:37                   ` Maxim Levitsky
2010-02-01 19:51                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Maxim Levitsky
2010-02-01 19:51                   ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Maxim Levitsky
2010-02-01 19:51                     ` Maxim Levitsky

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