From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Daniel P. Berrange" Subject: Re: [PATCH]Add free memory size of every NUMA node in phsical info Date: Tue, 26 Feb 2008 02:39:36 +0000 Message-ID: <20080226023936.GR2614@redhat.com> References: <82C666AA63DC75449C51EAD62E8B2BEC5CE85C@pdsmsx412.ccr.corp.intel.com> Reply-To: "Daniel P. Berrange" Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <82C666AA63DC75449C51EAD62E8B2BEC5CE85C@pdsmsx412.ccr.corp.intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Duan, Ronghui" Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Tue, Feb 26, 2008 at 10:02:36AM +0800, Duan, Ronghui wrote: > Returns free memory size per node in "xm info". This info can help users > who want to bind their guest domain in one node of their NUMA machines > thought set CPU affinity. I also write IA64 part support which I would > send to XEN-IA64 mail-list. Thanks. AFAICT, changing the ABI of the 'physinfo' sysctl is completely unneccessary. The per-node NUMA free memory information is already available to Dom0 via the existing 'availheap' sysctl: #define XEN_SYSCTL_availheap 9 struct xen_sysctl_availheap { /* IN variables. */ uint32_t min_bitwidth; /* Smallest address width (zero if don't care). */ uint32_t max_bitwidth; /* Largest address width (zero if don't care). */ int32_t node; /* NUMA node of interest (-1 for all nodes). */ /* OUT variables. */ uint64_aligned_t avail_bytes;/* Bytes available in the specified region. */ }; If you want to display this info in 'xm info', then simply invoke this availheap sysctl call to fetch the data. Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|