Re: [Xen-devel] xl: expose max_cpu_id from `xl info`

[Zhigang Wang <zhigang.x.wang@xxxxxxxxxx>]

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@xxxxxxxxxx>

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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