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| author | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:41 +0100 |
|---|---|---|
| committer | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:41 +0100 |
| commit | 97467ae4a049d30a8bf1d00cec67ff6c41e18168 (patch) | |
| tree | 72cdf203551432576f9147ae5dff937345995829 /tools/libxc | |
| parent | 618a40391f353f236c007038147a7b3771032f15 (diff) | |
| download | xen-97467ae4a049d30a8bf1d00cec67ff6c41e18168.tar.gz xen-97467ae4a049d30a8bf1d00cec67ff6c41e18168.tar.bz2 xen-97467ae4a049d30a8bf1d00cec67ff6c41e18168.zip | |
libxl,libxc: introduce libxl_get_numainfo()
Make some NUMA node information available to the toolstack. Achieve
this by means of xc_numainfo(), which exposes memory size and amount
of free memory of each node, as well as the relative distances of
each node to all the others.
For properly exposing distances we need the IDL to support arrays.
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'tools/libxc')
| -rw-r--r-- | tools/libxc/xc_misc.c | 14 | ||||
| -rw-r--r-- | tools/libxc/xenctrl.h | 6 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index 812b127ff3..3c5d64a4d1 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -35,6 +35,20 @@ int xc_get_max_cpus(xc_interface *xch) return max_cpus; } +int xc_get_max_nodes(xc_interface *xch) +{ + static int max_nodes = 0; + xc_physinfo_t physinfo; + + if ( max_nodes ) + return max_nodes; + + if ( !xc_physinfo(xch, &physinfo) ) + max_nodes = physinfo.max_node_id + 1; + + return max_nodes; +} + int xc_get_cpumap_size(xc_interface *xch) { return (xc_get_max_cpus(xch) + 7) / 8; diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h index 15bf8d28cb..91fbb02979 100644 --- a/tools/libxc/xenctrl.h +++ b/tools/libxc/xenctrl.h @@ -329,6 +329,12 @@ int xc_get_cpumap_size(xc_interface *xch); /* allocate a cpumap */ xc_cpumap_t xc_cpumap_alloc(xc_interface *xch); + /* + * NODEMAP handling + */ +/* return maximum number of NUMA nodes the hypervisor supports */ +int xc_get_max_nodes(xc_interface *xch); + /* * DOMAIN DEBUGGING FUNCTIONS */ |