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, 442 insertions, 0 deletions

diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
new file mode 100644
index 000000000..c0fd29133
--- /dev/null
+++ b/arch/s390/appldata/appldata_base.c
@@ -0,0 +1,442 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1.
+ * Exports appldata_register_ops() and appldata_unregister_ops() for the
+ * data gathering modules.
+ *
+ * Copyright IBM Corp. 2003, 2009
+ *
+ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>
+ */
+
+#define KMSG_COMPONENT	"appldata"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/module.h>
+#include <linux/sched/stat.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/pagemap.h>
+#include <linux/sysctl.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+#include <linux/workqueue.h>
+#include <asm/appldata.h>
+#include <asm/vtimer.h>
+#include <linux/uaccess.h>
+#include <asm/io.h>
+#include <asm/smp.h>
+
+#include "appldata.h"
+
+
+#define APPLDATA_CPU_INTERVAL	10000		/* default (CPU) time for
+						   sampling interval in
+						   milliseconds */
+
+#define TOD_MICRO	0x01000			/* nr. of TOD clock units
+						   for 1 microsecond */
+
+/*
+ * /proc entries (sysctl)
+ */
+static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata";
+static int appldata_timer_handler(struct ctl_table *ctl, int write,
+				  void *buffer, size_t *lenp, loff_t *ppos);
+static int appldata_interval_handler(struct ctl_table *ctl, int write,
+				     void *buffer, size_t *lenp, loff_t *ppos);
+
+static struct ctl_table_header *appldata_sysctl_header;
+static struct ctl_table appldata_table[] = {
+	{
+		.procname	= "timer",
+		.mode		= S_IRUGO | S_IWUSR,
+		.proc_handler	= appldata_timer_handler,
+	},
+	{
+		.procname	= "interval",
+		.mode		= S_IRUGO | S_IWUSR,
+		.proc_handler	= appldata_interval_handler,
+	},
+	{ },
+};
+
+static struct ctl_table appldata_dir_table[] = {
+	{
+		.procname	= appldata_proc_name,
+		.maxlen		= 0,
+		.mode		= S_IRUGO | S_IXUGO,
+		.child		= appldata_table,
+	},
+	{ },
+};
+
+/*
+ * Timer
+ */
+static struct vtimer_list appldata_timer;
+
+static DEFINE_SPINLOCK(appldata_timer_lock);
+static int appldata_interval = APPLDATA_CPU_INTERVAL;
+static int appldata_timer_active;
+
+/*
+ * Work queue
+ */
+static struct workqueue_struct *appldata_wq;
+static void appldata_work_fn(struct work_struct *work);
+static DECLARE_WORK(appldata_work, appldata_work_fn);
+
+
+/*
+ * Ops list
+ */
+static DEFINE_MUTEX(appldata_ops_mutex);
+static LIST_HEAD(appldata_ops_list);
+
+
+/*************************** timer, work, DIAG *******************************/
+/*
+ * appldata_timer_function()
+ *
+ * schedule work and reschedule timer
+ */
+static void appldata_timer_function(unsigned long data)
+{
+	queue_work(appldata_wq, (struct work_struct *) data);
+}
+
+/*
+ * appldata_work_fn()
+ *
+ * call data gathering function for each (active) module
+ */
+static void appldata_work_fn(struct work_struct *work)
+{
+	struct list_head *lh;
+	struct appldata_ops *ops;
+
+	mutex_lock(&appldata_ops_mutex);
+	list_for_each(lh, &appldata_ops_list) {
+		ops = list_entry(lh, struct appldata_ops, list);
+		if (ops->active == 1) {
+			ops->callback(ops->data);
+		}
+	}
+	mutex_unlock(&appldata_ops_mutex);
+}
+
+static struct appldata_product_id appldata_id = {
+	.prod_nr    = {0xD3, 0xC9, 0xD5, 0xE4,
+		       0xE7, 0xD2, 0xD9},	/* "LINUXKR" */
+	.prod_fn    = 0xD5D3,			/* "NL" */
+	.version_nr = 0xF2F6,			/* "26" */
+	.release_nr = 0xF0F1,			/* "01" */
+};
+
+/*
+ * appldata_diag()
+ *
+ * prepare parameter list, issue DIAG 0xDC
+ */
+int appldata_diag(char record_nr, u16 function, unsigned long buffer,
+			u16 length, char *mod_lvl)
+{
+	struct appldata_parameter_list *parm_list;
+	struct appldata_product_id *id;
+	int rc;
+
+	parm_list = kmalloc(sizeof(*parm_list), GFP_KERNEL);
+	id = kmemdup(&appldata_id, sizeof(appldata_id), GFP_KERNEL);
+	rc = -ENOMEM;
+	if (parm_list && id) {
+		id->record_nr = record_nr;
+		id->mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1];
+		rc = appldata_asm(parm_list, id, function,
+				  (void *) buffer, length);
+	}
+	kfree(id);
+	kfree(parm_list);
+	return rc;
+}
+/************************ timer, work, DIAG <END> ****************************/
+
+
+/****************************** /proc stuff **********************************/
+
+#define APPLDATA_ADD_TIMER	0
+#define APPLDATA_DEL_TIMER	1
+#define APPLDATA_MOD_TIMER	2
+
+/*
+ * __appldata_vtimer_setup()
+ *
+ * Add, delete or modify virtual timers on all online cpus.
+ * The caller needs to get the appldata_timer_lock spinlock.
+ */
+static void __appldata_vtimer_setup(int cmd)
+{
+	u64 timer_interval = (u64) appldata_interval * 1000 * TOD_MICRO;
+
+	switch (cmd) {
+	case APPLDATA_ADD_TIMER:
+		if (appldata_timer_active)
+			break;
+		appldata_timer.expires = timer_interval;
+		add_virt_timer_periodic(&appldata_timer);
+		appldata_timer_active = 1;
+		break;
+	case APPLDATA_DEL_TIMER:
+		del_virt_timer(&appldata_timer);
+		if (!appldata_timer_active)
+			break;
+		appldata_timer_active = 0;
+		break;
+	case APPLDATA_MOD_TIMER:
+		if (!appldata_timer_active)
+			break;
+		mod_virt_timer_periodic(&appldata_timer, timer_interval);
+	}
+}
+
+/*
+ * appldata_timer_handler()
+ *
+ * Start/Stop timer, show status of timer (0 = not active, 1 = active)
+ */
+static int
+appldata_timer_handler(struct ctl_table *ctl, int write,
+			   void *buffer, size_t *lenp, loff_t *ppos)
+{
+	int timer_active = appldata_timer_active;
+	int rc;
+	struct ctl_table ctl_entry = {
+		.procname	= ctl->procname,
+		.data		= &timer_active,
+		.maxlen		= sizeof(int),
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
+	};
+
+	rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
+	if (rc < 0 || !write)
+		return rc;
+
+	spin_lock(&appldata_timer_lock);
+	if (timer_active)
+		__appldata_vtimer_setup(APPLDATA_ADD_TIMER);
+	else
+		__appldata_vtimer_setup(APPLDATA_DEL_TIMER);
+	spin_unlock(&appldata_timer_lock);
+	return 0;
+}
+
+/*
+ * appldata_interval_handler()
+ *
+ * Set (CPU) timer interval for collection of data (in milliseconds), show
+ * current timer interval.
+ */
+static int
+appldata_interval_handler(struct ctl_table *ctl, int write,
+			   void *buffer, size_t *lenp, loff_t *ppos)
+{
+	int interval = appldata_interval;
+	int rc;
+	struct ctl_table ctl_entry = {
+		.procname	= ctl->procname,
+		.data		= &interval,
+		.maxlen		= sizeof(int),
+		.extra1		= SYSCTL_ONE,
+	};
+
+	rc = proc_dointvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
+	if (rc < 0 || !write)
+		return rc;
+
+	spin_lock(&appldata_timer_lock);
+	appldata_interval = interval;
+	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
+	spin_unlock(&appldata_timer_lock);
+	return 0;
+}
+
+/*
+ * appldata_generic_handler()
+ *
+ * Generic start/stop monitoring and DIAG, show status of
+ * monitoring (0 = not in process, 1 = in process)
+ */
+static int
+appldata_generic_handler(struct ctl_table *ctl, int write,
+			   void *buffer, size_t *lenp, loff_t *ppos)
+{
+	struct appldata_ops *ops = NULL, *tmp_ops;
+	struct list_head *lh;
+	int rc, found;
+	int active;
+	struct ctl_table ctl_entry = {
+		.data		= &active,
+		.maxlen		= sizeof(int),
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
+	};
+
+	found = 0;
+	mutex_lock(&appldata_ops_mutex);
+	list_for_each(lh, &appldata_ops_list) {
+		tmp_ops = list_entry(lh, struct appldata_ops, list);
+		if (&tmp_ops->ctl_table[2] == ctl) {
+			found = 1;
+		}
+	}
+	if (!found) {
+		mutex_unlock(&appldata_ops_mutex);
+		return -ENODEV;
+	}
+	ops = ctl->data;
+	if (!try_module_get(ops->owner)) {	// protect this function
+		mutex_unlock(&appldata_ops_mutex);
+		return -ENODEV;
+	}
+	mutex_unlock(&appldata_ops_mutex);
+
+	active = ops->active;
+	rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
+	if (rc < 0 || !write) {
+		module_put(ops->owner);
+		return rc;
+	}
+
+	mutex_lock(&appldata_ops_mutex);
+	if (active && (ops->active == 0)) {
+		// protect work queue callback
+		if (!try_module_get(ops->owner)) {
+			mutex_unlock(&appldata_ops_mutex);
+			module_put(ops->owner);
+			return -ENODEV;
+		}
+		ops->callback(ops->data);	// init record
+		rc = appldata_diag(ops->record_nr,
+					APPLDATA_START_INTERVAL_REC,
+					(unsigned long) ops->data, ops->size,
+					ops->mod_lvl);
+		if (rc != 0) {
+			pr_err("Starting the data collection for %s "
+			       "failed with rc=%d\n", ops->name, rc);
+			module_put(ops->owner);
+		} else
+			ops->active = 1;
+	} else if (!active && (ops->active == 1)) {
+		ops->active = 0;
+		rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
+				(unsigned long) ops->data, ops->size,
+				ops->mod_lvl);
+		if (rc != 0)
+			pr_err("Stopping the data collection for %s "
+			       "failed with rc=%d\n", ops->name, rc);
+		module_put(ops->owner);
+	}
+	mutex_unlock(&appldata_ops_mutex);
+	module_put(ops->owner);
+	return 0;
+}
+
+/*************************** /proc stuff <END> *******************************/
+
+
+/************************* module-ops management *****************************/
+/*
+ * appldata_register_ops()
+ *
+ * update ops list, register /proc/sys entries
+ */
+int appldata_register_ops(struct appldata_ops *ops)
+{
+	if (ops->size > APPLDATA_MAX_REC_SIZE)
+		return -EINVAL;
+
+	ops->ctl_table = kcalloc(4, sizeof(struct ctl_table), GFP_KERNEL);
+	if (!ops->ctl_table)
+		return -ENOMEM;
+
+	mutex_lock(&appldata_ops_mutex);
+	list_add(&ops->list, &appldata_ops_list);
+	mutex_unlock(&appldata_ops_mutex);
+
+	ops->ctl_table[0].procname = appldata_proc_name;
+	ops->ctl_table[0].maxlen   = 0;
+	ops->ctl_table[0].mode     = S_IRUGO | S_IXUGO;
+	ops->ctl_table[0].child    = &ops->ctl_table[2];
+
+	ops->ctl_table[2].procname = ops->name;
+	ops->ctl_table[2].mode     = S_IRUGO | S_IWUSR;
+	ops->ctl_table[2].proc_handler = appldata_generic_handler;
+	ops->ctl_table[2].data = ops;
+
+	ops->sysctl_header = register_sysctl_table(ops->ctl_table);
+	if (!ops->sysctl_header)
+		goto out;
+	return 0;
+out:
+	mutex_lock(&appldata_ops_mutex);
+	list_del(&ops->list);
+	mutex_unlock(&appldata_ops_mutex);
+	kfree(ops->ctl_table);
+	return -ENOMEM;
+}
+
+/*
+ * appldata_unregister_ops()
+ *
+ * update ops list, unregister /proc entries, stop DIAG if necessary
+ */
+void appldata_unregister_ops(struct appldata_ops *ops)
+{
+	mutex_lock(&appldata_ops_mutex);
+	list_del(&ops->list);
+	mutex_unlock(&appldata_ops_mutex);
+	unregister_sysctl_table(ops->sysctl_header);
+	kfree(ops->ctl_table);
+}
+/********************** module-ops management <END> **************************/
+
+
+/******************************* init / exit *********************************/
+
+/*
+ * appldata_init()
+ *
+ * init timer, register /proc entries
+ */
+static int __init appldata_init(void)
+{
+	init_virt_timer(&appldata_timer);
+	appldata_timer.function = appldata_timer_function;
+	appldata_timer.data = (unsigned long) &appldata_work;
+	appldata_wq = alloc_ordered_workqueue("appldata", 0);
+	if (!appldata_wq)
+		return -ENOMEM;
+	appldata_sysctl_header = register_sysctl_table(appldata_dir_table);
+	return 0;
+}
+
+__initcall(appldata_init);
+
+/**************************** init / exit <END> ******************************/
+
+EXPORT_SYMBOL_GPL(appldata_register_ops);
+EXPORT_SYMBOL_GPL(appldata_unregister_ops);
+EXPORT_SYMBOL_GPL(appldata_diag);
+
+#ifdef CONFIG_SWAP
+EXPORT_SYMBOL_GPL(si_swapinfo);
+#endif
+EXPORT_SYMBOL_GPL(nr_threads);
+EXPORT_SYMBOL_GPL(nr_running);
+EXPORT_SYMBOL_GPL(nr_iowait);