From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhigang Wang Subject: Re: xl: expose max_cpu_id from `xl info` Date: Tue, 13 Mar 2012 15:15:27 -0400 Message-ID: <4F5F9CCF.9000400@oracle.com> References: <4F5F7B49.9040001@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7758225513055188248==" Return-path: In-Reply-To: <4F5F7B49.9040001@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Andrew Cooper Cc: "xen-devel@lists.xensource.com" , Ian Jackson List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============7758225513055188248== Content-Type: multipart/alternative; boundary="------------070009090102080108090906" This is a multi-part message in MIME format. --------------070009090102080108090906 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 03/13/2012 12:52 PM, Andrew Cooper wrote: > This will allow userspace to reason with the total number of CPUs, not > just the current number of online CPUs. > > -- Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer T: +44 (0)1223 225 > 900, http://www.citrix.com > > xl-info-max_cpu_id.patch > > > # HG changeset patch > # Parent 5d20d2f6ffed0a49f030f04a8870f1926babbcbf > xl: display max_cpu_ids for xl info > > Expose "max_cpu_id" in stdout from `xl info` > > Signed-off-by: Andrew Cooper > > diff -r 5d20d2f6ffed tools/libxl/xl_cmdimpl.c > --- a/tools/libxl/xl_cmdimpl.c > +++ b/tools/libxl/xl_cmdimpl.c > @@ -3734,6 +3734,7 @@ static void output_physinfo(void) > } > > printf("nr_cpus : %d\n", info.nr_cpus); > + printf("max_cpu_id : %d\n", info.max_cpu_id); Is this true: nr_cpus = max_cpu_id + 1 ? Zhigang > printf("nr_nodes : %d\n", info.nr_nodes); > printf("cores_per_socket : %d\n", info.cores_per_socket); > printf("threads_per_core : %d\n", info.threads_per_core); > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel --------------070009090102080108090906 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 03/13/2012 12:52 PM, Andrew Cooper wrote:

This will allow userspace to reason with the total number of CPUs, not
just the current number of online CPUs.

-- 
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com

xl-info-max_cpu_id.patch

# HG changeset patch
# Parent 5d20d2f6ffed0a49f030f04a8870f1926babbcbf
xl: display max_cpu_ids for xl info

Expose "max_cpu_id" in stdout from `xl info`

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff -r 5d20d2f6ffed tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -3734,6 +3734,7 @@ static void output_physinfo(void)
     }
 
     printf("nr_cpus                : %d\n", info.nr_cpus);
+    printf("max_cpu_id             : %d\n", info.max_cpu_id);

Is this true: nr_cpus = max_cpu_id + 1 ?

Zhigang

     printf("nr_nodes               : %d\n", info.nr_nodes);
     printf("cores_per_socket       : %d\n", info.cores_per_socket);
     printf("threads_per_core       : %d\n", info.threads_per_core);

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