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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-03-13 10:09:25 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-03-13 10:09:25 +0000 |
| commit | 550686e4fdd5234b21def5fcbd474e97f3bb4409 (patch) | |
| tree | 5f798791b77246d1d713864b057eb4b8200d3b50 /tools/libxc/xc_pm.c | |
| parent | 8eaca58a104bf6a79202373d07d835a40268181e (diff) | |
| download | xen-550686e4fdd5234b21def5fcbd474e97f3bb4409.tar.gz xen-550686e4fdd5234b21def5fcbd474e97f3bb4409.tar.bz2 xen-550686e4fdd5234b21def5fcbd474e97f3bb4409.zip | |
xenpm: Add CPU topology info (thread/core/socket)
CPU topology info is necessary for power management analysis. For
example, to analysis the effect of Px state coordination, Cx
package/core coordination, the thread/core/socket topology
information is needed.
This patch add new command "get-cpu-topology" in xenpm to print the
CPU topology info:
Signed-off-by: Yu Ke <ke.yu@intel.com>
Diffstat (limited to 'tools/libxc/xc_pm.c')
| -rw-r--r-- | tools/libxc/xc_pm.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/libxc/xc_pm.c b/tools/libxc/xc_pm.c index 3b2f314ca2..951c22c5c9 100644 --- a/tools/libxc/xc_pm.c +++ b/tools/libxc/xc_pm.c @@ -306,3 +306,24 @@ int xc_set_cpufreq_para(int xc_handle, int cpuid, return xc_sysctl(xc_handle, &sysctl); } + +int xc_get_cputopo(int xc_handle, struct xc_get_cputopo *info) +{ + int rc; + DECLARE_SYSCTL; + + sysctl.cmd = XEN_SYSCTL_pm_op; + sysctl.u.pm_op.cmd = XEN_SYSCTL_pm_op_get_cputopo; + sysctl.u.pm_op.cpuid = 0; + set_xen_guest_handle( sysctl.u.pm_op.get_topo.cpu_to_core, + info->cpu_to_core ); + set_xen_guest_handle( sysctl.u.pm_op.get_topo.cpu_to_socket, + info->cpu_to_socket ); + sysctl.u.pm_op.get_topo.max_cpus = info->max_cpus; + + rc = do_sysctl(xc_handle, &sysctl); + info->nr_cpus = sysctl.u.pm_op.get_topo.nr_cpus; + + return rc; +} + |