From: Rik van Riel <riel@redhat.com>
To: leonid.moiseichuk@nokia.com
Cc: penberg@kernel.org, minchan@kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com,
mel@csn.ul.ie, rientjes@google.com, kosaki.motohiro@gmail.com,
hannes@cmpxchg.org, mtosatti@redhat.com,
akpm@linux-foundation.org, rhod@redhat.com,
kosaki.motohiro@jp.fujitsu.com
Subject: Re: [RFC 1/3] /dev/low_mem_notify
Date: Wed, 18 Jan 2012 09:30:52 -0500 [thread overview]
Message-ID: <4F16D79C.2020402@redhat.com> (raw)
In-Reply-To: <84FF21A720B0874AA94B46D76DB98269045596AE@008-AM1MPN1-003.mgdnok.nokia.com>
On 01/18/2012 04:06 AM, leonid.moiseichuk@nokia.com wrote:
> Would be possible to use for threshold pointed value(s) e.g. according to enum zone_state_item, because kinds of memory to track could be different?
> E.g. to tracking paging activity NR_ACTIVE_ANON and NR_ACTIVE_FILE could be interesting, not only free.
That seems like a horrible idea, because there is no guarantee that
the kernel will continue to use NR_ACTIVE_ANON and NR_ACTIVE_FILE
internally in the future.
What is exported to userspace must be somewhat independent of the
specifics of how the kernel implements things internally.
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: leonid.moiseichuk@nokia.com
Cc: penberg@kernel.org, minchan@kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com,
mel@csn.ul.ie, rientjes@google.com, kosaki.motohiro@gmail.com,
hannes@cmpxchg.org, mtosatti@redhat.com,
akpm@linux-foundation.org, rhod@redhat.com,
kosaki.motohiro@jp.fujitsu.com
Subject: Re: [RFC 1/3] /dev/low_mem_notify
Date: Wed, 18 Jan 2012 09:30:52 -0500 [thread overview]
Message-ID: <4F16D79C.2020402@redhat.com> (raw)
In-Reply-To: <84FF21A720B0874AA94B46D76DB98269045596AE@008-AM1MPN1-003.mgdnok.nokia.com>
On 01/18/2012 04:06 AM, leonid.moiseichuk@nokia.com wrote:
> Would be possible to use for threshold pointed value(s) e.g. according to enum zone_state_item, because kinds of memory to track could be different?
> E.g. to tracking paging activity NR_ACTIVE_ANON and NR_ACTIVE_FILE could be interesting, not only free.
That seems like a horrible idea, because there is no guarantee that
the kernel will continue to use NR_ACTIVE_ANON and NR_ACTIVE_FILE
internally in the future.
What is exported to userspace must be somewhat independent of the
specifics of how the kernel implements things internally.
--
All rights reversed
next prev parent reply other threads:[~2012-01-18 14:31 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-17 8:13 [RFC 0/3] low memory notify Minchan Kim
2012-01-17 8:13 ` Minchan Kim
2012-01-17 8:13 ` [RFC 1/3] /dev/low_mem_notify Minchan Kim
2012-01-17 8:13 ` Minchan Kim
2012-01-17 9:27 ` Pekka Enberg
2012-01-17 9:27 ` Pekka Enberg
2012-01-17 16:35 ` Rik van Riel
2012-01-17 16:35 ` Rik van Riel
2012-01-17 18:51 ` Pekka Enberg
2012-01-17 18:51 ` Pekka Enberg
2012-01-17 19:30 ` Rik van Riel
2012-01-17 19:30 ` Rik van Riel
2012-01-17 19:49 ` Pekka Enberg
2012-01-17 19:49 ` Pekka Enberg
2012-01-17 19:54 ` Pekka Enberg
2012-01-17 19:54 ` Pekka Enberg
2012-01-17 19:57 ` Pekka Enberg
2012-01-17 19:57 ` Pekka Enberg
2012-01-17 23:20 ` Minchan Kim
2012-01-17 23:20 ` Minchan Kim
2012-01-18 7:16 ` Pekka Enberg
2012-01-18 7:16 ` Pekka Enberg
2012-01-18 7:49 ` Minchan Kim
2012-01-18 7:49 ` Minchan Kim
2012-01-18 9:06 ` leonid.moiseichuk
2012-01-18 9:06 ` leonid.moiseichuk
2012-01-18 9:15 ` Pekka Enberg
2012-01-18 9:15 ` Pekka Enberg
2012-01-18 9:41 ` leonid.moiseichuk
2012-01-18 9:41 ` leonid.moiseichuk
2012-01-18 10:40 ` Pekka Enberg
2012-01-18 10:40 ` Pekka Enberg
2012-01-18 10:44 ` leonid.moiseichuk
2012-01-18 10:44 ` leonid.moiseichuk
2012-01-18 23:34 ` Ronen Hod
2012-01-18 23:34 ` Ronen Hod
2012-01-19 7:25 ` Pekka Enberg
2012-01-19 7:25 ` Pekka Enberg
2012-01-19 9:05 ` Ronen Hod
2012-01-19 9:05 ` Ronen Hod
2012-01-19 9:10 ` Pekka Enberg
2012-01-19 9:10 ` Pekka Enberg
2012-01-19 9:20 ` Ronen Hod
2012-01-19 9:20 ` Ronen Hod
2012-01-19 10:53 ` leonid.moiseichuk
2012-01-19 10:53 ` leonid.moiseichuk
2012-01-19 11:07 ` Pekka Enberg
2012-01-19 11:07 ` Pekka Enberg
2012-01-19 11:54 ` leonid.moiseichuk
2012-01-19 11:54 ` leonid.moiseichuk
2012-01-19 11:59 ` Pekka Enberg
2012-01-19 11:59 ` Pekka Enberg
2012-01-19 12:06 ` Pekka Enberg
2012-01-19 12:06 ` Pekka Enberg
2012-01-24 15:38 ` Marcelo Tosatti
2012-01-24 15:38 ` Marcelo Tosatti
2012-01-24 16:08 ` Ronen Hod
2012-01-24 16:08 ` Ronen Hod
2012-01-24 18:10 ` Marcelo Tosatti
2012-01-24 18:10 ` Marcelo Tosatti
2012-01-25 8:52 ` Ronen Hod
2012-01-25 8:52 ` Ronen Hod
2012-01-25 10:12 ` Marcelo Tosatti
2012-01-25 10:12 ` Marcelo Tosatti
2012-01-25 10:48 ` Ronen Hod
2012-01-25 10:48 ` Ronen Hod
2012-01-26 16:17 ` Marcelo Tosatti
2012-01-26 16:17 ` Marcelo Tosatti
2012-01-24 16:10 ` Pekka Enberg
2012-01-24 16:10 ` Pekka Enberg
2012-01-24 18:29 ` Marcelo Tosatti
2012-01-24 18:29 ` Marcelo Tosatti
2012-01-25 8:19 ` leonid.moiseichuk
2012-01-25 8:19 ` leonid.moiseichuk
2012-01-19 7:34 ` Pekka Enberg
2012-01-19 7:34 ` Pekka Enberg
2012-01-24 16:22 ` Arnd Bergmann
2012-01-24 16:22 ` Arnd Bergmann
2012-01-18 14:30 ` Rik van Riel [this message]
2012-01-18 14:30 ` Rik van Riel
2012-01-18 15:29 ` Pekka Enberg
2012-01-18 15:29 ` Pekka Enberg
2012-01-24 15:40 ` Marcelo Tosatti
2012-01-24 15:40 ` Marcelo Tosatti
2012-01-24 16:01 ` Pekka Enberg
2012-01-24 16:01 ` Pekka Enberg
2012-01-24 16:25 ` Arnd Bergmann
2012-01-24 16:25 ` Arnd Bergmann
2012-01-24 18:32 ` Marcelo Tosatti
2012-01-24 18:32 ` Marcelo Tosatti
2012-01-24 21:57 ` Jonathan Corbet
2012-01-24 21:57 ` Jonathan Corbet
2012-01-17 9:45 ` Pekka Enberg
2012-01-17 9:45 ` Pekka Enberg
2012-01-17 8:13 ` [RFC 2/3] vmscan hook Minchan Kim
2012-01-17 8:13 ` Minchan Kim
2012-01-17 8:39 ` KAMEZAWA Hiroyuki
2012-01-17 8:39 ` KAMEZAWA Hiroyuki
2012-01-17 9:13 ` Minchan Kim
2012-01-17 9:13 ` Minchan Kim
2012-01-17 10:05 ` KAMEZAWA Hiroyuki
2012-01-17 10:05 ` KAMEZAWA Hiroyuki
2012-01-17 23:08 ` Minchan Kim
2012-01-17 23:08 ` Minchan Kim
2012-01-18 0:18 ` KAMEZAWA Hiroyuki
2012-01-18 0:18 ` KAMEZAWA Hiroyuki
2012-01-18 14:17 ` Rik van Riel
2012-01-18 14:17 ` Rik van Riel
2012-01-19 2:25 ` KAMEZAWA Hiroyuki
2012-01-19 2:25 ` KAMEZAWA Hiroyuki
2012-01-19 14:42 ` Rik van Riel
2012-01-19 14:42 ` Rik van Riel
2012-01-20 0:24 ` KAMEZAWA Hiroyuki
2012-01-20 0:24 ` KAMEZAWA Hiroyuki
2012-01-17 8:13 ` [RFC 3/3] test program Minchan Kim
2012-01-17 8:13 ` Minchan Kim
2012-01-17 14:38 ` [RFC 0/3] low memory notify Colin Walters
2012-01-17 14:38 ` Colin Walters
2012-01-17 15:04 ` Pekka Enberg
2012-01-17 15:04 ` Pekka Enberg
2012-01-17 16:44 ` Rik van Riel
2012-01-17 16:44 ` Rik van Riel
2012-01-17 17:16 ` Olof Johansson
2012-01-17 17:16 ` Olof Johansson
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