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, 473 insertions, 0 deletions

diff --git a/include/acpi/processor.h b/include/acpi/processor.h
new file mode 100644
index 000000000..94181fe97
--- /dev/null
+++ b/include/acpi/processor.h
@@ -0,0 +1,473 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ACPI_PROCESSOR_H
+#define __ACPI_PROCESSOR_H
+
+#include <linux/cpu.h>
+#include <linux/cpufreq.h>
+#include <linux/pm_qos.h>
+#include <linux/printk.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/thermal.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+
+#include <asm/acpi.h>
+
+#define ACPI_PROCESSOR_CLASS		"processor"
+#define ACPI_PROCESSOR_DEVICE_NAME	"Processor"
+#define ACPI_PROCESSOR_DEVICE_HID	"ACPI0007"
+#define ACPI_PROCESSOR_CONTAINER_HID	"ACPI0010"
+
+#define ACPI_PROCESSOR_BUSY_METRIC	10
+
+#define ACPI_PROCESSOR_MAX_POWER	8
+#define ACPI_PROCESSOR_MAX_C2_LATENCY	100
+#define ACPI_PROCESSOR_MAX_C3_LATENCY	1000
+
+#define ACPI_PROCESSOR_MAX_THROTTLING	16
+#define ACPI_PROCESSOR_MAX_THROTTLE	250	/* 25% */
+#define ACPI_PROCESSOR_MAX_DUTY_WIDTH	4
+
+#define ACPI_PDC_REVISION_ID		0x1
+
+#define ACPI_PSD_REV0_REVISION		0	/* Support for _PSD as in ACPI 3.0 */
+#define ACPI_PSD_REV0_ENTRIES		5
+
+#define ACPI_TSD_REV0_REVISION		0	/* Support for _PSD as in ACPI 3.0 */
+#define ACPI_TSD_REV0_ENTRIES		5
+/*
+ * Types of coordination defined in ACPI 3.0. Same macros can be used across
+ * P, C and T states
+ */
+#define DOMAIN_COORD_TYPE_SW_ALL	0xfc
+#define DOMAIN_COORD_TYPE_SW_ANY	0xfd
+#define DOMAIN_COORD_TYPE_HW_ALL	0xfe
+
+#define ACPI_CSTATE_SYSTEMIO	0
+#define ACPI_CSTATE_FFH		1
+#define ACPI_CSTATE_HALT	2
+#define ACPI_CSTATE_INTEGER	3
+
+#define ACPI_CX_DESC_LEN	32
+
+/* Power Management */
+
+struct acpi_processor_cx;
+
+struct acpi_power_register {
+	u8 descriptor;
+	u16 length;
+	u8 space_id;
+	u8 bit_width;
+	u8 bit_offset;
+	u8 access_size;
+	u64 address;
+} __packed;
+
+struct acpi_processor_cx {
+	u8 valid;
+	u8 type;
+	u32 address;
+	u8 entry_method;
+	u8 index;
+	u32 latency;
+	u8 bm_sts_skip;
+	char desc[ACPI_CX_DESC_LEN];
+};
+
+struct acpi_lpi_state {
+	u32 min_residency;
+	u32 wake_latency; /* worst case */
+	u32 flags;
+	u32 arch_flags;
+	u32 res_cnt_freq;
+	u32 enable_parent_state;
+	u64 address;
+	u8 index;
+	u8 entry_method;
+	char desc[ACPI_CX_DESC_LEN];
+};
+
+struct acpi_processor_power {
+	int count;
+	union {
+		struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
+		struct acpi_lpi_state lpi_states[ACPI_PROCESSOR_MAX_POWER];
+	};
+	int timer_broadcast_on_state;
+};
+
+/* Performance Management */
+
+struct acpi_psd_package {
+	u64 num_entries;
+	u64 revision;
+	u64 domain;
+	u64 coord_type;
+	u64 num_processors;
+} __packed;
+
+struct acpi_pct_register {
+	u8 descriptor;
+	u16 length;
+	u8 space_id;
+	u8 bit_width;
+	u8 bit_offset;
+	u8 reserved;
+	u64 address;
+} __packed;
+
+struct acpi_processor_px {
+	u64 core_frequency;	/* megahertz */
+	u64 power;	/* milliWatts */
+	u64 transition_latency;	/* microseconds */
+	u64 bus_master_latency;	/* microseconds */
+	u64 control;	/* control value */
+	u64 status;	/* success indicator */
+};
+
+struct acpi_processor_performance {
+	unsigned int state;
+	unsigned int platform_limit;
+	struct acpi_pct_register control_register;
+	struct acpi_pct_register status_register;
+	unsigned int state_count;
+	struct acpi_processor_px *states;
+	struct acpi_psd_package domain_info;
+	cpumask_var_t shared_cpu_map;
+	unsigned int shared_type;
+};
+
+/* Throttling Control */
+
+struct acpi_tsd_package {
+	u64 num_entries;
+	u64 revision;
+	u64 domain;
+	u64 coord_type;
+	u64 num_processors;
+} __packed;
+
+struct acpi_ptc_register {
+	u8 descriptor;
+	u16 length;
+	u8 space_id;
+	u8 bit_width;
+	u8 bit_offset;
+	u8 reserved;
+	u64 address;
+} __packed;
+
+struct acpi_processor_tx_tss {
+	u64 freqpercentage;	/* */
+	u64 power;	/* milliWatts */
+	u64 transition_latency;	/* microseconds */
+	u64 control;	/* control value */
+	u64 status;	/* success indicator */
+};
+struct acpi_processor_tx {
+	u16 power;
+	u16 performance;
+};
+
+struct acpi_processor;
+struct acpi_processor_throttling {
+	unsigned int state;
+	unsigned int platform_limit;
+	struct acpi_pct_register control_register;
+	struct acpi_pct_register status_register;
+	unsigned int state_count;
+	struct acpi_processor_tx_tss *states_tss;
+	struct acpi_tsd_package domain_info;
+	cpumask_var_t shared_cpu_map;
+	int (*acpi_processor_get_throttling) (struct acpi_processor * pr);
+	int (*acpi_processor_set_throttling) (struct acpi_processor * pr,
+					      int state, bool force);
+
+	u32 address;
+	u8 duty_offset;
+	u8 duty_width;
+	u8 tsd_valid_flag;
+	unsigned int shared_type;
+	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
+};
+
+/* Limit Interface */
+
+struct acpi_processor_lx {
+	int px;			/* performance state */
+	int tx;			/* throttle level */
+};
+
+struct acpi_processor_limit {
+	struct acpi_processor_lx state;	/* current limit */
+	struct acpi_processor_lx thermal;	/* thermal limit */
+	struct acpi_processor_lx user;	/* user limit */
+};
+
+struct acpi_processor_flags {
+	u8 power:1;
+	u8 performance:1;
+	u8 throttling:1;
+	u8 limit:1;
+	u8 bm_control:1;
+	u8 bm_check:1;
+	u8 has_cst:1;
+	u8 has_lpi:1;
+	u8 power_setup_done:1;
+	u8 bm_rld_set:1;
+	u8 need_hotplug_init:1;
+};
+
+struct acpi_processor {
+	acpi_handle handle;
+	u32 acpi_id;
+	phys_cpuid_t phys_id;	/* CPU hardware ID such as APIC ID for x86 */
+	u32 id;		/* CPU logical ID allocated by OS */
+	u32 pblk;
+	int performance_platform_limit;
+	int throttling_platform_limit;
+	/* 0 - states 0..n-th state available */
+
+	struct acpi_processor_flags flags;
+	struct acpi_processor_power power;
+	struct acpi_processor_performance *performance;
+	struct acpi_processor_throttling throttling;
+	struct acpi_processor_limit limit;
+	struct thermal_cooling_device *cdev;
+	struct device *dev; /* Processor device. */
+	struct freq_qos_request perflib_req;
+	struct freq_qos_request thermal_req;
+};
+
+struct acpi_processor_errata {
+	u8 smp;
+	struct {
+		u8 throttle:1;
+		u8 fdma:1;
+		u8 reserved:6;
+		u32 bmisx;
+	} piix4;
+};
+
+extern int acpi_processor_preregister_performance(struct
+						  acpi_processor_performance
+						  __percpu *performance);
+
+extern int acpi_processor_register_performance(struct acpi_processor_performance
+					       *performance, unsigned int cpu);
+extern void acpi_processor_unregister_performance(unsigned int cpu);
+
+int acpi_processor_pstate_control(void);
+/* note: this locks both the calling module and the processor module
+         if a _PPC object exists, rmmod is disallowed then */
+int acpi_processor_notify_smm(struct module *calling_module);
+int acpi_processor_get_psd(acpi_handle handle,
+			   struct acpi_psd_package *pdomain);
+
+/* parsing the _P* objects. */
+extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
+
+/* for communication between multiple parts of the processor kernel module */
+DECLARE_PER_CPU(struct acpi_processor *, processors);
+extern struct acpi_processor_errata errata;
+
+#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
+void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
+					unsigned int cpu);
+int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+				    struct acpi_processor_cx *cx,
+				    struct acpi_power_register *reg);
+void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
+#else
+static inline void acpi_processor_power_init_bm_check(struct
+						      acpi_processor_flags
+						      *flags, unsigned int cpu)
+{
+	flags->bm_check = 1;
+	return;
+}
+static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+						  struct acpi_processor_cx *cx,
+						  struct acpi_power_register
+						  *reg)
+{
+	return -1;
+}
+static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
+						   *cstate)
+{
+	return;
+}
+#endif
+
+static inline int call_on_cpu(int cpu, long (*fn)(void *), void *arg,
+			      bool direct)
+{
+	if (direct || (is_percpu_thread() && cpu == smp_processor_id()))
+		return fn(arg);
+	return work_on_cpu(cpu, fn, arg);
+}
+
+/* in processor_perflib.c */
+
+#ifdef CONFIG_CPU_FREQ
+extern bool acpi_processor_cpufreq_init;
+void acpi_processor_ignore_ppc_init(void);
+void acpi_processor_ppc_init(struct cpufreq_policy *policy);
+void acpi_processor_ppc_exit(struct cpufreq_policy *policy);
+void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
+extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
+#else
+static inline void acpi_processor_ignore_ppc_init(void)
+{
+	return;
+}
+static inline void acpi_processor_ppc_init(struct cpufreq_policy *policy)
+{
+	return;
+}
+static inline void acpi_processor_ppc_exit(struct cpufreq_policy *policy)
+{
+	return;
+}
+static inline void acpi_processor_ppc_has_changed(struct acpi_processor *pr,
+								int event_flag)
+{
+	static unsigned int printout = 1;
+	if (printout) {
+		printk(KERN_WARNING
+		       "Warning: Processor Platform Limit event detected, but not handled.\n");
+		printk(KERN_WARNING
+		       "Consider compiling CPUfreq support into your kernel.\n");
+		printout = 0;
+	}
+}
+static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
+{
+	return -ENODEV;
+}
+
+#endif				/* CONFIG_CPU_FREQ */
+
+/* in processor_core.c */
+phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
+phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
+int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
+int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
+
+#ifdef CONFIG_ACPI_CPPC_LIB
+extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
+extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
+#else
+static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
+{
+	return 0;
+}
+static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
+{
+	return;
+}
+#endif	/* CONFIG_ACPI_CPPC_LIB */
+
+/* in processor_pdc.c */
+void acpi_processor_set_pdc(acpi_handle handle);
+
+/* in processor_throttling.c */
+#ifdef CONFIG_ACPI_CPU_FREQ_PSS
+int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
+int acpi_processor_get_throttling_info(struct acpi_processor *pr);
+extern int acpi_processor_set_throttling(struct acpi_processor *pr,
+					 int state, bool force);
+/*
+ * Reevaluate whether the T-state is invalid after one cpu is
+ * onlined/offlined. In such case the flags.throttling will be updated.
+ */
+extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
+			bool is_dead);
+extern const struct file_operations acpi_processor_throttling_fops;
+extern void acpi_processor_throttling_init(void);
+#else
+static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
+{
+	return 0;
+}
+
+static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
+{
+	return -ENODEV;
+}
+
+static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
+					 int state, bool force)
+{
+	return -ENODEV;
+}
+
+static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
+			bool is_dead) {}
+
+static inline void acpi_processor_throttling_init(void) {}
+#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */
+
+/* in processor_idle.c */
+extern struct cpuidle_driver acpi_idle_driver;
+#ifdef CONFIG_ACPI_PROCESSOR_IDLE
+int acpi_processor_power_init(struct acpi_processor *pr);
+int acpi_processor_power_exit(struct acpi_processor *pr);
+int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
+int acpi_processor_hotplug(struct acpi_processor *pr);
+#else
+static inline int acpi_processor_power_init(struct acpi_processor *pr)
+{
+	return -ENODEV;
+}
+
+static inline int acpi_processor_power_exit(struct acpi_processor *pr)
+{
+	return -ENODEV;
+}
+
+static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
+{
+	return -ENODEV;
+}
+
+static inline int acpi_processor_hotplug(struct acpi_processor *pr)
+{
+	return -ENODEV;
+}
+#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
+
+/* in processor_thermal.c */
+int acpi_processor_thermal_init(struct acpi_processor *pr,
+				struct acpi_device *device);
+void acpi_processor_thermal_exit(struct acpi_processor *pr,
+				 struct acpi_device *device);
+extern const struct thermal_cooling_device_ops processor_cooling_ops;
+#ifdef CONFIG_CPU_FREQ
+void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy);
+void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy);
+#else
+static inline void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy)
+{
+	return;
+}
+static inline void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy)
+{
+	return;
+}
+#endif	/* CONFIG_CPU_FREQ */
+
+#ifdef CONFIG_ACPI_PROCESSOR_IDLE
+extern int acpi_processor_ffh_lpi_probe(unsigned int cpu);
+extern int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi);
+#endif
+
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+extern int arch_register_cpu(int cpu);
+extern void arch_unregister_cpu(int cpu);
+#endif
+
+#endif