From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Hansen Date: Thu, 13 May 2004 02:04:47 +0000 Subject: Re: [ANNOUNCE] [PATCH] Node Hotplug Support Message-Id: <1084413887.974.7.camel@nighthawk> List-Id: References: <20040508003904.63395ca7.tokunaga.keiich@jp.fujitsu.com> <1083944945.23559.1.camel@nighthawk> <20040510104725.7c9231ee.tokunaga.keiich@jp.fujitsu.com> <1084167941.28602.478.camel@nighthawk> <20040513102751.48c61d48.tokunaga.keiich@jp.fujitsu.com> In-Reply-To: <20040513102751.48c61d48.tokunaga.keiich@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Keiichiro Tokunaga Cc: Linux Kernel Mailing List , hotplug devel , lhns-devel@lists.sourceforge.net On Wed, 2004-05-12 at 18:27, Keiichiro Tokunaga wrote: > On Sun, 09 May 2004 22:45:42 -0700 > Dave Hansen wrote: > > > On Sun, 2004-05-09 at 18:47, Keiichiro Tokunaga wrote: > > > There is no NUMA support in the current code yet. I'll post a > > > rough patch to show my idea soon. I'm thinking to regard a > > > container device that has PXM as a NUMA node so far. > > > > Don't you think it would be a good idea to work with some of the current > > code, instead of trying to wrap around it? > > Are you saying that LHNS should use the current NUMA code > (or coming code in the future) to support NUMA node hotplug? Absolutely. Why do we need wrappers when we can offline entire nodes with 6-line shell scripts? The CPU hotplug interfaces are here today and the memory stuff will be here soon. Perhaps you could help with the NUMA part. #!/bin/sh NODENUM=$1 NODEDIR=/sys/devices/system/node/node${NODENUM} for i in $NODEDIR/cpu* $NODEDIR/memory*; do echo 0 > $i/control/online fi echo 0 > $NODEDIR/control/online We don't currently export bus to node mappings in sysfs, but we have them in the kernel, so that won't be too hard to export as well. -- Dave ------------------------------------------------------- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id%62&alloc_ida84&op=click _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel