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/******************************************************************************
* xc_cpu_hotplug.c - Libxc API for Xen Physical CPU hotplug Management
*
* Copyright (c) 2008, Shan Haitao <haitao.shan@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "xc_private.h"
int xc_cpu_online(xc_interface *xch, int cpu)
{
DECLARE_SYSCTL;
int ret;
sysctl.cmd = XEN_SYSCTL_cpu_hotplug;
sysctl.u.cpu_hotplug.cpu = cpu;
sysctl.u.cpu_hotplug.op = XEN_SYSCTL_CPU_HOTPLUG_ONLINE;
ret = xc_sysctl(xch, &sysctl);
return ret;
}
int xc_cpu_offline(xc_interface *xch, int cpu)
{
DECLARE_SYSCTL;
int ret;
sysctl.cmd = XEN_SYSCTL_cpu_hotplug;
sysctl.u.cpu_hotplug.cpu = cpu;
sysctl.u.cpu_hotplug.op = XEN_SYSCTL_CPU_HOTPLUG_OFFLINE;
ret = xc_sysctl(xch, &sysctl);
return ret;
}
int xc_smt_enable(xc_interface *xch)
{
DECLARE_SYSCTL;
int ret;
sysctl.cmd = XEN_SYSCTL_cpu_hotplug;
sysctl.u.cpu_hotplug.cpu = 0;
sysctl.u.cpu_hotplug.op = XEN_SYSCTL_CPU_HOTPLUG_SMT_ENABLE;
ret = xc_sysctl(xch, &sysctl);
return ret;
}
int xc_smt_disable(xc_interface *xch)
{
DECLARE_SYSCTL;
int ret;
sysctl.cmd = XEN_SYSCTL_cpu_hotplug;
sysctl.u.cpu_hotplug.cpu = 0;
sysctl.u.cpu_hotplug.op = XEN_SYSCTL_CPU_HOTPLUG_SMT_DISABLE;
ret = xc_sysctl(xch, &sysctl);
return ret;
}
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