From 046c2b503a89d21b41e4d555a9f75d02af00dbc6 Mon Sep 17 00:00:00 2001 From: Chong Li Date: Fri, 1 Apr 2016 15:14:42 +0000 Subject: [PATCH] libxc: enable per-VCPU parameter for RTDS Add xc_sched_rtds_vcpu_get/set functions to interact with Xen to get/set a domain's per-VCPU parameters. Signed-off-by: Chong Li Signed-off-by: Meng Xu Signed-off-by: Sisu Xi Acked-by: Wei Liu Reviewed-by: Dario Faggioli --- tools/libxc/include/xenctrl.h | 8 +++++ tools/libxc/xc_rt.c | 68 +++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+) diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h index a964681b77..e8cb1ecf06 100644 --- a/tools/libxc/include/xenctrl.h +++ b/tools/libxc/include/xenctrl.h @@ -929,6 +929,14 @@ int xc_sched_rtds_domain_set(xc_interface *xch, int xc_sched_rtds_domain_get(xc_interface *xch, uint32_t domid, struct xen_domctl_sched_rtds *sdom); +int xc_sched_rtds_vcpu_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus); +int xc_sched_rtds_vcpu_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus); int xc_sched_arinc653_schedule_set( diff --git a/tools/libxc/xc_rt.c b/tools/libxc/xc_rt.c index d59e5ce77c..221d17fa7c 100644 --- a/tools/libxc/xc_rt.c +++ b/tools/libxc/xc_rt.c @@ -62,3 +62,71 @@ int xc_sched_rtds_domain_get(xc_interface *xch, return rc; } + +int xc_sched_rtds_vcpu_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus) +{ + int rc; + unsigned processed = 0; + DECLARE_DOMCTL; + DECLARE_HYPERCALL_BOUNCE(vcpus, sizeof(*vcpus) * num_vcpus, + XC_HYPERCALL_BUFFER_BOUNCE_IN); + + if ( xc_hypercall_bounce_pre(xch, vcpus) ) + return -1; + + domctl.cmd = XEN_DOMCTL_scheduler_op; + domctl.domain = (domid_t) domid; + domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_RTDS; + domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_putvcpuinfo; + + while ( processed < num_vcpus ) + { + domctl.u.scheduler_op.u.v.nr_vcpus = num_vcpus - processed; + set_xen_guest_handle_offset(domctl.u.scheduler_op.u.v.vcpus, vcpus, + processed); + if ( (rc = do_domctl(xch, &domctl)) != 0 ) + break; + processed += domctl.u.scheduler_op.u.v.nr_vcpus; + } + + xc_hypercall_bounce_post(xch, vcpus); + + return rc; +} + +int xc_sched_rtds_vcpu_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus) +{ + int rc; + unsigned processed = 0; + DECLARE_DOMCTL; + DECLARE_HYPERCALL_BOUNCE(vcpus, sizeof(*vcpus) * num_vcpus, + XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + + if ( xc_hypercall_bounce_pre(xch, vcpus) ) + return -1; + + domctl.cmd = XEN_DOMCTL_scheduler_op; + domctl.domain = (domid_t) domid; + domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_RTDS; + domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_getvcpuinfo; + + while ( processed < num_vcpus ) + { + domctl.u.scheduler_op.u.v.nr_vcpus = num_vcpus - processed; + set_xen_guest_handle_offset(domctl.u.scheduler_op.u.v.vcpus, vcpus, + processed); + if ( (rc = do_domctl(xch, &domctl)) != 0 ) + break; + processed += domctl.u.scheduler_op.u.v.nr_vcpus; + } + + xc_hypercall_bounce_post(xch, vcpus); + + return rc; +} -- 2.30.2