From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/gpu/drm/i915/gvt/sched_policy.c | 480 ++++++++++++++++++++++++++++++++ 1 file changed, 480 insertions(+) create mode 100644 drivers/gpu/drm/i915/gvt/sched_policy.c (limited to 'drivers/gpu/drm/i915/gvt/sched_policy.c') diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.c b/drivers/gpu/drm/i915/gvt/sched_policy.c new file mode 100644 index 000000000..c077fb467 --- /dev/null +++ b/drivers/gpu/drm/i915/gvt/sched_policy.c @@ -0,0 +1,480 @@ +/* + * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Authors: + * Anhua Xu + * Kevin Tian + * + * Contributors: + * Min He + * Bing Niu + * Zhi Wang + * + */ + +#include "i915_drv.h" +#include "gvt.h" + +static bool vgpu_has_pending_workload(struct intel_vgpu *vgpu) +{ + enum intel_engine_id i; + struct intel_engine_cs *engine; + + for_each_engine(engine, vgpu->gvt->gt, i) { + if (!list_empty(workload_q_head(vgpu, engine))) + return true; + } + + return false; +} + +/* We give 2 seconds higher prio for vGPU during start */ +#define GVT_SCHED_VGPU_PRI_TIME 2 + +struct vgpu_sched_data { + struct list_head lru_list; + struct intel_vgpu *vgpu; + bool active; + bool pri_sched; + ktime_t pri_time; + ktime_t sched_in_time; + ktime_t sched_time; + ktime_t left_ts; + ktime_t allocated_ts; + + struct vgpu_sched_ctl sched_ctl; +}; + +struct gvt_sched_data { + struct intel_gvt *gvt; + struct hrtimer timer; + unsigned long period; + struct list_head lru_runq_head; + ktime_t expire_time; +}; + +static void vgpu_update_timeslice(struct intel_vgpu *vgpu, ktime_t cur_time) +{ + ktime_t delta_ts; + struct vgpu_sched_data *vgpu_data; + + if (!vgpu || vgpu == vgpu->gvt->idle_vgpu) + return; + + vgpu_data = vgpu->sched_data; + delta_ts = ktime_sub(cur_time, vgpu_data->sched_in_time); + vgpu_data->sched_time = ktime_add(vgpu_data->sched_time, delta_ts); + vgpu_data->left_ts = ktime_sub(vgpu_data->left_ts, delta_ts); + vgpu_data->sched_in_time = cur_time; +} + +#define GVT_TS_BALANCE_PERIOD_MS 100 +#define GVT_TS_BALANCE_STAGE_NUM 10 + +static void gvt_balance_timeslice(struct gvt_sched_data *sched_data) +{ + struct vgpu_sched_data *vgpu_data; + struct list_head *pos; + static u64 stage_check; + int stage = stage_check++ % GVT_TS_BALANCE_STAGE_NUM; + + /* The timeslice accumulation reset at stage 0, which is + * allocated again without adding previous debt. + */ + if (stage == 0) { + int total_weight = 0; + ktime_t fair_timeslice; + + list_for_each(pos, &sched_data->lru_runq_head) { + vgpu_data = container_of(pos, struct vgpu_sched_data, lru_list); + total_weight += vgpu_data->sched_ctl.weight; + } + + list_for_each(pos, &sched_data->lru_runq_head) { + vgpu_data = container_of(pos, struct vgpu_sched_data, lru_list); + fair_timeslice = ktime_divns(ms_to_ktime(GVT_TS_BALANCE_PERIOD_MS), + total_weight) * vgpu_data->sched_ctl.weight; + + vgpu_data->allocated_ts = fair_timeslice; + vgpu_data->left_ts = vgpu_data->allocated_ts; + } + } else { + list_for_each(pos, &sched_data->lru_runq_head) { + vgpu_data = container_of(pos, struct vgpu_sched_data, lru_list); + + /* timeslice for next 100ms should add the left/debt + * slice of previous stages. + */ + vgpu_data->left_ts += vgpu_data->allocated_ts; + } + } +} + +static void try_to_schedule_next_vgpu(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler; + enum intel_engine_id i; + struct intel_engine_cs *engine; + struct vgpu_sched_data *vgpu_data; + ktime_t cur_time; + + /* no need to schedule if next_vgpu is the same with current_vgpu, + * let scheduler chose next_vgpu again by setting it to NULL. + */ + if (scheduler->next_vgpu == scheduler->current_vgpu) { + scheduler->next_vgpu = NULL; + return; + } + + /* + * after the flag is set, workload dispatch thread will + * stop dispatching workload for current vgpu + */ + scheduler->need_reschedule = true; + + /* still have uncompleted workload? */ + for_each_engine(engine, gvt->gt, i) { + if (scheduler->current_workload[engine->id]) + return; + } + + cur_time = ktime_get(); + vgpu_update_timeslice(scheduler->current_vgpu, cur_time); + vgpu_data = scheduler->next_vgpu->sched_data; + vgpu_data->sched_in_time = cur_time; + + /* switch current vgpu */ + scheduler->current_vgpu = scheduler->next_vgpu; + scheduler->next_vgpu = NULL; + + scheduler->need_reschedule = false; + + /* wake up workload dispatch thread */ + for_each_engine(engine, gvt->gt, i) + wake_up(&scheduler->waitq[engine->id]); +} + +static struct intel_vgpu *find_busy_vgpu(struct gvt_sched_data *sched_data) +{ + struct vgpu_sched_data *vgpu_data; + struct intel_vgpu *vgpu = NULL; + struct list_head *head = &sched_data->lru_runq_head; + struct list_head *pos; + + /* search a vgpu with pending workload */ + list_for_each(pos, head) { + + vgpu_data = container_of(pos, struct vgpu_sched_data, lru_list); + if (!vgpu_has_pending_workload(vgpu_data->vgpu)) + continue; + + if (vgpu_data->pri_sched) { + if (ktime_before(ktime_get(), vgpu_data->pri_time)) { + vgpu = vgpu_data->vgpu; + break; + } else + vgpu_data->pri_sched = false; + } + + /* Return the vGPU only if it has time slice left */ + if (vgpu_data->left_ts > 0) { + vgpu = vgpu_data->vgpu; + break; + } + } + + return vgpu; +} + +/* in nanosecond */ +#define GVT_DEFAULT_TIME_SLICE 1000000 + +static void tbs_sched_func(struct gvt_sched_data *sched_data) +{ + struct intel_gvt *gvt = sched_data->gvt; + struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler; + struct vgpu_sched_data *vgpu_data; + struct intel_vgpu *vgpu = NULL; + + /* no active vgpu or has already had a target */ + if (list_empty(&sched_data->lru_runq_head) || scheduler->next_vgpu) + goto out; + + vgpu = find_busy_vgpu(sched_data); + if (vgpu) { + scheduler->next_vgpu = vgpu; + vgpu_data = vgpu->sched_data; + if (!vgpu_data->pri_sched) { + /* Move the last used vGPU to the tail of lru_list */ + list_del_init(&vgpu_data->lru_list); + list_add_tail(&vgpu_data->lru_list, + &sched_data->lru_runq_head); + } + } else { + scheduler->next_vgpu = gvt->idle_vgpu; + } +out: + if (scheduler->next_vgpu) + try_to_schedule_next_vgpu(gvt); +} + +void intel_gvt_schedule(struct intel_gvt *gvt) +{ + struct gvt_sched_data *sched_data = gvt->scheduler.sched_data; + ktime_t cur_time; + + mutex_lock(&gvt->sched_lock); + cur_time = ktime_get(); + + if (test_and_clear_bit(INTEL_GVT_REQUEST_SCHED, + (void *)&gvt->service_request)) { + if (cur_time >= sched_data->expire_time) { + gvt_balance_timeslice(sched_data); + sched_data->expire_time = ktime_add_ms( + cur_time, GVT_TS_BALANCE_PERIOD_MS); + } + } + clear_bit(INTEL_GVT_REQUEST_EVENT_SCHED, (void *)&gvt->service_request); + + vgpu_update_timeslice(gvt->scheduler.current_vgpu, cur_time); + tbs_sched_func(sched_data); + + mutex_unlock(&gvt->sched_lock); +} + +static enum hrtimer_restart tbs_timer_fn(struct hrtimer *timer_data) +{ + struct gvt_sched_data *data; + + data = container_of(timer_data, struct gvt_sched_data, timer); + + intel_gvt_request_service(data->gvt, INTEL_GVT_REQUEST_SCHED); + + hrtimer_add_expires_ns(&data->timer, data->period); + + return HRTIMER_RESTART; +} + +static int tbs_sched_init(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = + &gvt->scheduler; + + struct gvt_sched_data *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + INIT_LIST_HEAD(&data->lru_runq_head); + hrtimer_init(&data->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + data->timer.function = tbs_timer_fn; + data->period = GVT_DEFAULT_TIME_SLICE; + data->gvt = gvt; + + scheduler->sched_data = data; + + return 0; +} + +static void tbs_sched_clean(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = + &gvt->scheduler; + struct gvt_sched_data *data = scheduler->sched_data; + + hrtimer_cancel(&data->timer); + + kfree(data); + scheduler->sched_data = NULL; +} + +static int tbs_sched_init_vgpu(struct intel_vgpu *vgpu) +{ + struct vgpu_sched_data *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->sched_ctl.weight = vgpu->sched_ctl.weight; + data->vgpu = vgpu; + INIT_LIST_HEAD(&data->lru_list); + + vgpu->sched_data = data; + + return 0; +} + +static void tbs_sched_clean_vgpu(struct intel_vgpu *vgpu) +{ + struct intel_gvt *gvt = vgpu->gvt; + struct gvt_sched_data *sched_data = gvt->scheduler.sched_data; + + kfree(vgpu->sched_data); + vgpu->sched_data = NULL; + + /* this vgpu id has been removed */ + if (idr_is_empty(&gvt->vgpu_idr)) + hrtimer_cancel(&sched_data->timer); +} + +static void tbs_sched_start_schedule(struct intel_vgpu *vgpu) +{ + struct gvt_sched_data *sched_data = vgpu->gvt->scheduler.sched_data; + struct vgpu_sched_data *vgpu_data = vgpu->sched_data; + ktime_t now; + + if (!list_empty(&vgpu_data->lru_list)) + return; + + now = ktime_get(); + vgpu_data->pri_time = ktime_add(now, + ktime_set(GVT_SCHED_VGPU_PRI_TIME, 0)); + vgpu_data->pri_sched = true; + + list_add(&vgpu_data->lru_list, &sched_data->lru_runq_head); + + if (!hrtimer_active(&sched_data->timer)) + hrtimer_start(&sched_data->timer, ktime_add_ns(ktime_get(), + sched_data->period), HRTIMER_MODE_ABS); + vgpu_data->active = true; +} + +static void tbs_sched_stop_schedule(struct intel_vgpu *vgpu) +{ + struct vgpu_sched_data *vgpu_data = vgpu->sched_data; + + list_del_init(&vgpu_data->lru_list); + vgpu_data->active = false; +} + +static const struct intel_gvt_sched_policy_ops tbs_schedule_ops = { + .init = tbs_sched_init, + .clean = tbs_sched_clean, + .init_vgpu = tbs_sched_init_vgpu, + .clean_vgpu = tbs_sched_clean_vgpu, + .start_schedule = tbs_sched_start_schedule, + .stop_schedule = tbs_sched_stop_schedule, +}; + +int intel_gvt_init_sched_policy(struct intel_gvt *gvt) +{ + int ret; + + mutex_lock(&gvt->sched_lock); + gvt->scheduler.sched_ops = &tbs_schedule_ops; + ret = gvt->scheduler.sched_ops->init(gvt); + mutex_unlock(&gvt->sched_lock); + + return ret; +} + +void intel_gvt_clean_sched_policy(struct intel_gvt *gvt) +{ + mutex_lock(&gvt->sched_lock); + gvt->scheduler.sched_ops->clean(gvt); + mutex_unlock(&gvt->sched_lock); +} + +/* for per-vgpu scheduler policy, there are 2 per-vgpu data: + * sched_data, and sched_ctl. We see these 2 data as part of + * the global scheduler which are proteced by gvt->sched_lock. + * Caller should make their decision if the vgpu_lock should + * be hold outside. + */ + +int intel_vgpu_init_sched_policy(struct intel_vgpu *vgpu) +{ + int ret; + + mutex_lock(&vgpu->gvt->sched_lock); + ret = vgpu->gvt->scheduler.sched_ops->init_vgpu(vgpu); + mutex_unlock(&vgpu->gvt->sched_lock); + + return ret; +} + +void intel_vgpu_clean_sched_policy(struct intel_vgpu *vgpu) +{ + mutex_lock(&vgpu->gvt->sched_lock); + vgpu->gvt->scheduler.sched_ops->clean_vgpu(vgpu); + mutex_unlock(&vgpu->gvt->sched_lock); +} + +void intel_vgpu_start_schedule(struct intel_vgpu *vgpu) +{ + struct vgpu_sched_data *vgpu_data = vgpu->sched_data; + + mutex_lock(&vgpu->gvt->sched_lock); + if (!vgpu_data->active) { + gvt_dbg_core("vgpu%d: start schedule\n", vgpu->id); + vgpu->gvt->scheduler.sched_ops->start_schedule(vgpu); + } + mutex_unlock(&vgpu->gvt->sched_lock); +} + +void intel_gvt_kick_schedule(struct intel_gvt *gvt) +{ + mutex_lock(&gvt->sched_lock); + intel_gvt_request_service(gvt, INTEL_GVT_REQUEST_EVENT_SCHED); + mutex_unlock(&gvt->sched_lock); +} + +void intel_vgpu_stop_schedule(struct intel_vgpu *vgpu) +{ + struct intel_gvt_workload_scheduler *scheduler = + &vgpu->gvt->scheduler; + struct vgpu_sched_data *vgpu_data = vgpu->sched_data; + struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; + struct intel_engine_cs *engine; + enum intel_engine_id id; + + if (!vgpu_data->active) + return; + + gvt_dbg_core("vgpu%d: stop schedule\n", vgpu->id); + + mutex_lock(&vgpu->gvt->sched_lock); + scheduler->sched_ops->stop_schedule(vgpu); + + if (scheduler->next_vgpu == vgpu) + scheduler->next_vgpu = NULL; + + if (scheduler->current_vgpu == vgpu) { + /* stop workload dispatching */ + scheduler->need_reschedule = true; + scheduler->current_vgpu = NULL; + } + + intel_runtime_pm_get(&dev_priv->runtime_pm); + spin_lock_bh(&scheduler->mmio_context_lock); + for_each_engine(engine, vgpu->gvt->gt, id) { + if (scheduler->engine_owner[engine->id] == vgpu) { + intel_gvt_switch_mmio(vgpu, NULL, engine); + scheduler->engine_owner[engine->id] = NULL; + } + } + spin_unlock_bh(&scheduler->mmio_context_lock); + intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm); + mutex_unlock(&vgpu->gvt->sched_lock); +} -- cgit v1.2.3