From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chong Li Subject: [PATCH v5 for Xen 4.7 2/4] libxc: enable per-VCPU parameter settings for RTDS scheduler Date: Thu, 4 Feb 2016 16:50:42 -0600 Message-ID: <1454626244-5511-3-git-send-email-lichong659@gmail.com> References: <1454626244-5511-1-git-send-email-lichong659@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1454626244-5511-1-git-send-email-lichong659@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Chong Li , wei.liu2@citrix.com, Sisu Xi , george.dunlap@eu.citrix.com, dario.faggioli@citrix.com, Meng Xu , lichong659@gmail.com, dgolomb@seas.upenn.edu List-Id: xen-devel@lists.xenproject.org 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 --- 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: CC: CC: CC: CC: CC: --- tools/libxc/include/xenctrl.h | 8 +++++++ tools/libxc/xc_rt.c | 56 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h index 01a6dda..db13434 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..cb7bc1a 100644 --- a/tools/libxc/xc_rt.c +++ b/tools/libxc/xc_rt.c @@ -62,3 +62,59 @@ 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; + 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; + domctl.u.scheduler_op.u.v.nr_vcpus = num_vcpus; + set_xen_guest_handle(domctl.u.scheduler_op.u.v.vcpus, vcpus); + domctl.u.scheduler_op.u.v.vcpu_index = 0; + + rc = do_domctl(xch, &domctl); + + 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; + 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; + domctl.u.scheduler_op.u.v.nr_vcpus = num_vcpus; + set_xen_guest_handle(domctl.u.scheduler_op.u.v.vcpus, vcpus); + domctl.u.scheduler_op.u.v.vcpu_index = 0; + + rc = do_domctl(xch, &domctl); + + xc_hypercall_bounce_post(xch, vcpus); + + return rc; +} -- 1.9.1