[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v7 for Xen 4.7 2/4] libxc: enable per-VCPU parameter settings for RTDS scheduler
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 <chong.li@xxxxxxxxx> Signed-off-by: Meng Xu <mengxu@xxxxxxxxxxxxx> Signed-off-by: Sisu Xi <xisisu@xxxxxxxxx> --- Changes on PATCH v6: 1) Resolve some coding sytle issues Changes on PATCH v5: 1) In xc_sched_rtds_vcpu_get/set, re-issueing the hypercall if it is preempted. Changes on PATCH v4: 1) Minor modifications on the function parameters. Changes on PATCH v2: 1) Minor modifications due to the change of struct xen_domctl_scheduler_op. CC: <dario.faggioli@xxxxxxxxxx> CC: <george.dunlap@xxxxxxxxxxxxx> CC: <dgolomb@xxxxxxxxxxxxxx> CC: <mengxu@xxxxxxxxxxxxx> CC: <wei.liu2@xxxxxxxxxx> CC: <lichong659@xxxxxxxxx> --- 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 01a6dda..4567585 100644 --- a/tools/libxc/include/xenctrl.h +++ b/tools/libxc/include/xenctrl.h @@ -893,6 +893,14 @@ 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 d59e5ce..d1d1aa5 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 = 0; + 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; +} -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |