From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759429AbYBSUnp (ORCPT ); Tue, 19 Feb 2008 15:43:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754218AbYBSUnf (ORCPT ); Tue, 19 Feb 2008 15:43:35 -0500 Received: from relay2.sgi.com ([192.48.171.30]:49123 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751469AbYBSUne (ORCPT ); Tue, 19 Feb 2008 15:43:34 -0500 Date: Tue, 19 Feb 2008 14:43:29 -0600 From: Paul Jackson To: Paul Jackson Cc: riel@redhat.com, kosaki.motohiro@jp.fujitsu.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, marcelo@kvack.org, daniel.spang@gmail.com, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, linux-fsdevel@vger.kernel.org, pavel@ucw.cz, a1426z@gawab.com, jonathan@jonmasters.org, zlynx@acm.org Subject: Re: [PATCH 0/8][for -mm] mem_notify v6 Message-Id: <20080219144329.360394cd.pj@sgi.com> In-Reply-To: <20080219141820.f7132b62.pj@sgi.com> References: <2f11576a0802090719i3c08a41aj38504e854edbfeac@mail.gmail.com> <20080217084906.e1990b11.pj@sgi.com> <20080219145108.7E96.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080219090008.bb6cbe2f.pj@sgi.com> <20080219140222.4cee07ab@cuia.boston.redhat.com> <20080219141820.f7132b62.pj@sgi.com> Organization: SGI X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.12.0; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org pj, talking to himself: > Of course > for embedded use, I'd have to adapt it to a non-cpuset based mechanism > (not difficult), as embedded definitely doesn't do cpusets. I'm forgetting an important detail here. Kosaki-san has clearly stated that this hook, at vmscan's writepage, is too late for his embedded needs, and that they need the feedback a bit earlier, when the page moves from the active list to the inactive list. However, except for the placement of such hooks in three or four places, rather than just one, it may well be (if cpusets could be factored out) that one mechanism would meet all needs ... except for that pesky HPC need for throttling to more or less zero the swapping from select cpusets. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.940.382.4214 From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 19 Feb 2008 14:43:29 -0600 From: Paul Jackson Subject: Re: [PATCH 0/8][for -mm] mem_notify v6 Message-Id: <20080219144329.360394cd.pj@sgi.com> In-Reply-To: <20080219141820.f7132b62.pj@sgi.com> References: <2f11576a0802090719i3c08a41aj38504e854edbfeac@mail.gmail.com> <20080217084906.e1990b11.pj@sgi.com> <20080219145108.7E96.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080219090008.bb6cbe2f.pj@sgi.com> <20080219140222.4cee07ab@cuia.boston.redhat.com> <20080219141820.f7132b62.pj@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Paul Jackson Cc: riel@redhat.com, kosaki.motohiro@jp.fujitsu.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, marcelo@kvack.org, daniel.spang@gmail.com, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, linux-fsdevel@vger.kernel.org, pavel@ucw.cz, a1426z@gawab.com, jonathan@jonmasters.org, zlynx@acm.org List-ID: pj, talking to himself: > Of course > for embedded use, I'd have to adapt it to a non-cpuset based mechanism > (not difficult), as embedded definitely doesn't do cpusets. I'm forgetting an important detail here. Kosaki-san has clearly stated that this hook, at vmscan's writepage, is too late for his embedded needs, and that they need the feedback a bit earlier, when the page moves from the active list to the inactive list. However, except for the placement of such hooks in three or four places, rather than just one, it may well be (if cpusets could be factored out) that one mechanism would meet all needs ... except for that pesky HPC need for throttling to more or less zero the swapping from select cpusets. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.940.382.4214 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org