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https://github.com/xen-project/xen.git
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Meng Xu
93fd67e8c6
Add xc_sched_rtds_* functions to interact with Xen to set/get domain's parameters for rtds scheduler. Note: VCPU's information (period, budget) is in microsecond (us). Signed-off-by: Meng Xu <mengxu@cis.upenn.edu> Signed-off-by: Sisu Xi <xisisu@gmail.com> Reviewed-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: George Dunlap <george.dunlap@eu.citrix.com> [ ijc -- xenctrl.h has moved to tools/libxc/include, adjust patch to match ]
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/****************************************************************************
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*
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* File: xc_rt.c
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* Author: Sisu Xi
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* Meng Xu
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*
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* Description: XC Interface to the rtds scheduler
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* Note: VCPU's parameter (period, budget) is in microsecond (us).
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* All VCPUs of the same domain have same period and budget.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xc_private.h"
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int xc_sched_rtds_domain_set(xc_interface *xch,
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uint32_t domid,
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struct xen_domctl_sched_rtds *sdom)
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{
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int rc;
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_scheduler_op;
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domctl.domain = (domid_t) domid;
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domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_RTDS;
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domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_putinfo;
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domctl.u.scheduler_op.u.rtds.period = sdom->period;
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domctl.u.scheduler_op.u.rtds.budget = sdom->budget;
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rc = do_domctl(xch, &domctl);
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return rc;
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}
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int xc_sched_rtds_domain_get(xc_interface *xch,
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uint32_t domid,
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struct xen_domctl_sched_rtds *sdom)
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{
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int rc;
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_scheduler_op;
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domctl.domain = (domid_t) domid;
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domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_RTDS;
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domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_getinfo;
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rc = do_domctl(xch, &domctl);
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if ( rc == 0 )
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*sdom = domctl.u.scheduler_op.u.rtds;
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return rc;
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}
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