Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 509 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gt/selftest_slpc.c b/drivers/gpu/drm/i915/gt/selftest_slpc.c
new file mode 100644
index 000000000..bd44ce73a
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/selftest_slpc.c
@@ -0,0 +1,509 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#define NUM_STEPS 5
+#define H2G_DELAY 50000
+#define delay_for_h2g() usleep_range(H2G_DELAY, H2G_DELAY + 10000)
+#define FREQUENCY_REQ_UNIT	DIV_ROUND_CLOSEST(GT_FREQUENCY_MULTIPLIER, \
+						  GEN9_FREQ_SCALER)
+enum test_type {
+	VARY_MIN,
+	VARY_MAX,
+	MAX_GRANTED,
+	SLPC_POWER,
+	TILE_INTERACTION,
+};
+
+struct slpc_thread {
+	struct kthread_worker *worker;
+	struct kthread_work work;
+	struct intel_gt *gt;
+	int result;
+};
+
+static int slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 freq)
+{
+	int ret;
+
+	ret = intel_guc_slpc_set_min_freq(slpc, freq);
+	if (ret)
+		pr_err("Could not set min frequency to [%u]\n", freq);
+	else /* Delay to ensure h2g completes */
+		delay_for_h2g();
+
+	return ret;
+}
+
+static int slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 freq)
+{
+	int ret;
+
+	ret = intel_guc_slpc_set_max_freq(slpc, freq);
+	if (ret)
+		pr_err("Could not set maximum frequency [%u]\n",
+		       freq);
+	else /* Delay to ensure h2g completes */
+		delay_for_h2g();
+
+	return ret;
+}
+
+static int slpc_set_freq(struct intel_gt *gt, u32 freq)
+{
+	int err;
+	struct intel_guc_slpc *slpc = &gt->uc.guc.slpc;
+
+	err = slpc_set_max_freq(slpc, freq);
+	if (err) {
+		pr_err("Unable to update max freq");
+		return err;
+	}
+
+	err = slpc_set_min_freq(slpc, freq);
+	if (err) {
+		pr_err("Unable to update min freq");
+		return err;
+	}
+
+	return err;
+}
+
+static u64 measure_power_at_freq(struct intel_gt *gt, int *freq, u64 *power)
+{
+	int err = 0;
+
+	err = slpc_set_freq(gt, *freq);
+	if (err)
+		return err;
+	*freq = intel_rps_read_actual_frequency(&gt->rps);
+	*power = measure_power(&gt->rps, freq);
+
+	return err;
+}
+
+static int vary_max_freq(struct intel_guc_slpc *slpc, struct intel_rps *rps,
+			 u32 *max_act_freq)
+{
+	u32 step, max_freq, req_freq;
+	u32 act_freq;
+	int err = 0;
+
+	/* Go from max to min in 5 steps */
+	step = (slpc->rp0_freq - slpc->min_freq) / NUM_STEPS;
+	*max_act_freq = slpc->min_freq;
+	for (max_freq = slpc->rp0_freq; max_freq > slpc->min_freq;
+				max_freq -= step) {
+		err = slpc_set_max_freq(slpc, max_freq);
+		if (err)
+			break;
+
+		req_freq = intel_rps_read_punit_req_frequency(rps);
+
+		/* GuC requests freq in multiples of 50/3 MHz */
+		if (req_freq > (max_freq + FREQUENCY_REQ_UNIT)) {
+			pr_err("SWReq is %d, should be at most %d\n", req_freq,
+			       max_freq + FREQUENCY_REQ_UNIT);
+			err = -EINVAL;
+		}
+
+		act_freq =  intel_rps_read_actual_frequency(rps);
+		if (act_freq > *max_act_freq)
+			*max_act_freq = act_freq;
+
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int vary_min_freq(struct intel_guc_slpc *slpc, struct intel_rps *rps,
+			 u32 *max_act_freq)
+{
+	u32 step, min_freq, req_freq;
+	u32 act_freq;
+	int err = 0;
+
+	/* Go from min to max in 5 steps */
+	step = (slpc->rp0_freq - slpc->min_freq) / NUM_STEPS;
+	*max_act_freq = slpc->min_freq;
+	for (min_freq = slpc->min_freq; min_freq < slpc->rp0_freq;
+				min_freq += step) {
+		err = slpc_set_min_freq(slpc, min_freq);
+		if (err)
+			break;
+
+		req_freq = intel_rps_read_punit_req_frequency(rps);
+
+		/* GuC requests freq in multiples of 50/3 MHz */
+		if (req_freq < (min_freq - FREQUENCY_REQ_UNIT)) {
+			pr_err("SWReq is %d, should be at least %d\n", req_freq,
+			       min_freq - FREQUENCY_REQ_UNIT);
+			err = -EINVAL;
+		}
+
+		act_freq =  intel_rps_read_actual_frequency(rps);
+		if (act_freq > *max_act_freq)
+			*max_act_freq = act_freq;
+
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int slpc_power(struct intel_gt *gt, struct intel_engine_cs *engine)
+{
+	struct intel_guc_slpc *slpc = &gt->uc.guc.slpc;
+	struct {
+		u64 power;
+		int freq;
+	} min, max;
+	int err = 0;
+
+	/*
+	 * Our fundamental assumption is that running at lower frequency
+	 * actually saves power. Let's see if our RAPL measurement supports
+	 * that theory.
+	 */
+	if (!librapl_supported(gt->i915))
+		return 0;
+
+	min.freq = slpc->min_freq;
+	err = measure_power_at_freq(gt, &min.freq, &min.power);
+
+	if (err)
+		return err;
+
+	max.freq = slpc->rp0_freq;
+	err = measure_power_at_freq(gt, &max.freq, &max.power);
+
+	if (err)
+		return err;
+
+	pr_info("%s: min:%llumW @ %uMHz, max:%llumW @ %uMHz\n",
+		engine->name,
+		min.power, min.freq,
+		max.power, max.freq);
+
+	if (10 * min.freq >= 9 * max.freq) {
+		pr_notice("Could not control frequency, ran at [%uMHz, %uMhz]\n",
+			  min.freq, max.freq);
+	}
+
+	if (11 * min.power > 10 * max.power) {
+		pr_err("%s: did not conserve power when setting lower frequency!\n",
+		       engine->name);
+		err = -EINVAL;
+	}
+
+	/* Restore min/max frequencies */
+	slpc_set_max_freq(slpc, slpc->rp0_freq);
+	slpc_set_min_freq(slpc, slpc->min_freq);
+
+	return err;
+}
+
+static int max_granted_freq(struct intel_guc_slpc *slpc, struct intel_rps *rps, u32 *max_act_freq)
+{
+	struct intel_gt *gt = rps_to_gt(rps);
+	u32 perf_limit_reasons;
+	int err = 0;
+
+	err = slpc_set_min_freq(slpc, slpc->rp0_freq);
+	if (err)
+		return err;
+
+	*max_act_freq =  intel_rps_read_actual_frequency(rps);
+	if (*max_act_freq != slpc->rp0_freq) {
+		/* Check if there was some throttling by pcode */
+		perf_limit_reasons = intel_uncore_read(gt->uncore,
+						       intel_gt_perf_limit_reasons_reg(gt));
+
+		/* If not, this is an error */
+		if (!(perf_limit_reasons & GT0_PERF_LIMIT_REASONS_MASK)) {
+			pr_err("Pcode did not grant max freq\n");
+			err = -EINVAL;
+		} else {
+			pr_info("Pcode throttled frequency 0x%x\n", perf_limit_reasons);
+		}
+	}
+
+	return err;
+}
+
+static int run_test(struct intel_gt *gt, int test_type)
+{
+	struct intel_guc_slpc *slpc = &gt->uc.guc.slpc;
+	struct intel_rps *rps = &gt->rps;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	struct igt_spinner spin;
+	u32 slpc_min_freq, slpc_max_freq;
+	int err = 0;
+
+	if (!intel_uc_uses_guc_slpc(&gt->uc))
+		return 0;
+
+	if (slpc->min_freq == slpc->rp0_freq) {
+		pr_err("Min/Max are fused to the same value\n");
+		return -EINVAL;
+	}
+
+	if (igt_spinner_init(&spin, gt))
+		return -ENOMEM;
+
+	if (intel_guc_slpc_get_max_freq(slpc, &slpc_max_freq)) {
+		pr_err("Could not get SLPC max freq\n");
+		return -EIO;
+	}
+
+	if (intel_guc_slpc_get_min_freq(slpc, &slpc_min_freq)) {
+		pr_err("Could not get SLPC min freq\n");
+		return -EIO;
+	}
+
+	/*
+	 * Set min frequency to RPn so that we can test the whole
+	 * range of RPn-RP0. This also turns off efficient freq
+	 * usage and makes results more predictable.
+	 */
+	err = slpc_set_min_freq(slpc, slpc->min_freq);
+	if (err) {
+		pr_err("Unable to update min freq!");
+		return err;
+	}
+
+	intel_gt_pm_wait_for_idle(gt);
+	intel_gt_pm_get(gt);
+	for_each_engine(engine, gt, id) {
+		struct i915_request *rq;
+		u32 max_act_freq;
+
+		if (!intel_engine_can_store_dword(engine))
+			continue;
+
+		st_engine_heartbeat_disable(engine);
+
+		rq = igt_spinner_create_request(&spin,
+						engine->kernel_context,
+						MI_NOOP);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			st_engine_heartbeat_enable(engine);
+			break;
+		}
+
+		i915_request_add(rq);
+
+		if (!igt_wait_for_spinner(&spin, rq)) {
+			pr_err("%s: Spinner did not start\n",
+			       engine->name);
+			igt_spinner_end(&spin);
+			st_engine_heartbeat_enable(engine);
+			intel_gt_set_wedged(engine->gt);
+			err = -EIO;
+			break;
+		}
+
+		switch (test_type) {
+		case VARY_MIN:
+			err = vary_min_freq(slpc, rps, &max_act_freq);
+			break;
+
+		case VARY_MAX:
+			err = vary_max_freq(slpc, rps, &max_act_freq);
+			break;
+
+		case MAX_GRANTED:
+		case TILE_INTERACTION:
+			/* Media engines have a different RP0 */
+			if (gt->type != GT_MEDIA && (engine->class == VIDEO_DECODE_CLASS ||
+						     engine->class == VIDEO_ENHANCEMENT_CLASS)) {
+				igt_spinner_end(&spin);
+				st_engine_heartbeat_enable(engine);
+				err = 0;
+				continue;
+			}
+
+			err = max_granted_freq(slpc, rps, &max_act_freq);
+			break;
+
+		case SLPC_POWER:
+			err = slpc_power(gt, engine);
+			break;
+		}
+
+		if (test_type != SLPC_POWER) {
+			pr_info("Max actual frequency for %s was %d\n",
+				engine->name, max_act_freq);
+
+			/* Actual frequency should rise above min */
+			if (max_act_freq <= slpc->min_freq) {
+				pr_err("Actual freq did not rise above min\n");
+				pr_err("Perf Limit Reasons: 0x%x\n",
+				       intel_uncore_read(gt->uncore,
+							 intel_gt_perf_limit_reasons_reg(gt)));
+				err = -EINVAL;
+			}
+		}
+
+		igt_spinner_end(&spin);
+		st_engine_heartbeat_enable(engine);
+
+		if (err)
+			break;
+	}
+
+	/* Restore min/max frequencies */
+	slpc_set_max_freq(slpc, slpc_max_freq);
+	slpc_set_min_freq(slpc, slpc_min_freq);
+
+	if (igt_flush_test(gt->i915))
+		err = -EIO;
+
+	intel_gt_pm_put(gt);
+	igt_spinner_fini(&spin);
+	intel_gt_pm_wait_for_idle(gt);
+
+	return err;
+}
+
+static int live_slpc_vary_min(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret;
+
+	for_each_gt(gt, i915, i) {
+		ret = run_test(gt, VARY_MIN);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+static int live_slpc_vary_max(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret;
+
+	for_each_gt(gt, i915, i) {
+		ret = run_test(gt, VARY_MAX);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+/* check if pcode can grant RP0 */
+static int live_slpc_max_granted(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret;
+
+	for_each_gt(gt, i915, i) {
+		ret = run_test(gt, MAX_GRANTED);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+static int live_slpc_power(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret;
+
+	for_each_gt(gt, i915, i) {
+		ret = run_test(gt, SLPC_POWER);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+static void slpc_spinner_thread(struct kthread_work *work)
+{
+	struct slpc_thread *thread = container_of(work, typeof(*thread), work);
+
+	thread->result = run_test(thread->gt, TILE_INTERACTION);
+}
+
+static int live_slpc_tile_interaction(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_gt *gt;
+	struct slpc_thread *threads;
+	int i = 0, ret = 0;
+
+	threads = kcalloc(I915_MAX_GT, sizeof(*threads), GFP_KERNEL);
+	if (!threads)
+		return -ENOMEM;
+
+	for_each_gt(gt, i915, i) {
+		threads[i].worker = kthread_create_worker(0, "igt/slpc_parallel:%d", gt->info.id);
+
+		if (IS_ERR(threads[i].worker)) {
+			ret = PTR_ERR(threads[i].worker);
+			break;
+		}
+
+		threads[i].gt = gt;
+		kthread_init_work(&threads[i].work, slpc_spinner_thread);
+		kthread_queue_work(threads[i].worker, &threads[i].work);
+	}
+
+	for_each_gt(gt, i915, i) {
+		int status;
+
+		if (IS_ERR_OR_NULL(threads[i].worker))
+			continue;
+
+		kthread_flush_work(&threads[i].work);
+		status = READ_ONCE(threads[i].result);
+		if (status && !ret) {
+			pr_err("%s GT %d failed ", __func__, gt->info.id);
+			ret = status;
+		}
+		kthread_destroy_worker(threads[i].worker);
+	}
+
+	kfree(threads);
+	return ret;
+}
+
+int intel_slpc_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_slpc_vary_max),
+		SUBTEST(live_slpc_vary_min),
+		SUBTEST(live_slpc_max_granted),
+		SUBTEST(live_slpc_power),
+		SUBTEST(live_slpc_tile_interaction),
+	};
+
+	struct intel_gt *gt;
+	unsigned int i;
+
+	for_each_gt(gt, i915, i) {
+		if (intel_gt_is_wedged(gt))
+			return 0;
+	}
+
+	return i915_live_subtests(tests, i915);
+}