ffe9ce5b43
https://source.android.com/docs/security/bulletin/2023-12-01 * tag 'ASB-2023-12-05_11-5.4' of https://android.googlesource.com/kernel/common: ANDROID: ABI: Update allowed list for QCOM BACKPORT: ALSA: compress: Allow pause and resume during draining UPSTREAM: netfilter: nf_tables: pass context to nft_set_destroy() UPSTREAM: netfilter: nf_tables: don't skip expired elements during walk ANDROID: GKI: db845c: Update symbols list and ABI on rpmsg_register_device_override ANDROID: Use GKI Dr. No OWNERS file ANDROID: Remove android/OWNERs file FROMGIT: Input: uinput - allow injecting event times ANDROID: fix up rpmsg_device ABI break ANDROID: fix up platform_device ABI break UPSTREAM: rpmsg: Fix possible refcount leak in rpmsg_register_device_override() UPSTREAM: rpmsg: glink: Release driver_override BACKPORT: rpmsg: Fix calling device_lock() on non-initialized device BACKPORT: rpmsg: Fix kfree() of static memory on setting driver_override UPSTREAM: rpmsg: Constify local variable in field store macro UPSTREAM: driver: platform: Add helper for safer setting of driver_override BACKPORT: firmware_loader: Abort all upcoming firmware load request once reboot triggered UPSTREAM: firmware_loader: Refactor kill_pending_fw_fallback_reqs() Revert "perf: Disallow mis-matched inherited group reads" Revert "xfrm: fix a data-race in xfrm_gen_index()" Revert "Bluetooth: hci_core: Fix build warnings" Revert "xfrm: interface: use DEV_STATS_INC()" Revert "netfilter: conntrack: allow sctp hearbeat after connection re-use" Revert "netfilter: conntrack: don't refresh sctp entries in closed state" Revert "netfilter: handle the connecting collision properly in nf_conntrack_proto_sctp" Reapply "netfilter: conntrack: don't refresh sctp entries in closed state" Reapply "netfilter: conntrack: allow sctp hearbeat after connection re-use" Linux 5.4.259 xfrm6: fix inet6_dev refcount underflow problem Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name Bluetooth: hci_sock: fix slab oob read in create_monitor_event phy: mapphone-mdm6600: Fix pinctrl_pm handling for sleep pins phy: mapphone-mdm6600: Fix runtime PM for remove phy: mapphone-mdm6600: Fix runtime disable on probe ASoC: pxa: fix a memory leak in probe() gpio: vf610: set value before the direction to avoid a glitch s390/pci: fix iommu bitmap allocation perf: Disallow mis-matched inherited group reads USB: serial: option: add Fibocom to DELL custom modem FM101R-GL USB: serial: option: add entry for Sierra EM9191 with new firmware USB: serial: option: add Telit LE910C4-WWX 0x1035 composition ACPI: irq: Fix incorrect return value in acpi_register_gsi() Revert "pinctrl: avoid unsafe code pattern in find_pinctrl()" mmc: core: Capture correct oemid-bits for eMMC cards mmc: core: sdio: hold retuning if sdio in 1-bit mode mtd: physmap-core: Restore map_rom fallback mtd: spinand: micron: correct bitmask for ecc status mtd: rawnand: qcom: Unmap the right resource upon probe failure Bluetooth: hci_event: Fix using memcmp when comparing keys HID: multitouch: Add required quirk for Synaptics 0xcd7e device btrfs: fix some -Wmaybe-uninitialized warnings in ioctl.c drm: panel-orientation-quirks: Add quirk for One Mix 2S sky2: Make sure there is at least one frag_addr available regulator/core: Revert "fix kobject release warning and memory leak in regulator_register()" wifi: cfg80211: avoid leaking stack data into trace wifi: mac80211: allow transmitting EAPOL frames with tainted key Bluetooth: hci_core: Fix build warnings Bluetooth: Avoid redundant authentication HID: holtek: fix slab-out-of-bounds Write in holtek_kbd_input_event tracing: relax trace_event_eval_update() execution with cond_resched() ata: libata-eh: Fix compilation warning in ata_eh_link_report() gpio: timberdale: Fix potential deadlock on &tgpio->lock overlayfs: set ctime when setting mtime and atime i2c: mux: Avoid potential false error message in i2c_mux_add_adapter btrfs: initialize start_slot in btrfs_log_prealloc_extents btrfs: return -EUCLEAN for delayed tree ref with a ref count not equals to 1 ARM: dts: ti: omap: Fix noisy serial with overrun-throttle-ms for mapphone ACPI: resource: Skip IRQ override on ASUS ExpertBook B1402CBA ACPI: resource: Skip IRQ override on ASUS ExpertBook B1502CBA ACPI: resource: Skip IRQ override on Asus Expertbook B2402CBA ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks ACPI: resource: Skip IRQ override on Asus Vivobook S5602ZA ACPI: resource: Add ASUS model S5402ZA to quirks ACPI: resource: Skip IRQ override on Asus Vivobook K3402ZA/K3502ZA ACPI: resources: Add DMI-based legacy IRQ override quirk ACPI: Drop acpi_dev_irqresource_disabled() resource: Add irqresource_disabled() net: pktgen: Fix interface flags printing netfilter: nft_set_rbtree: .deactivate fails if element has expired neighbor: tracing: Move pin6 inside CONFIG_IPV6=y section net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve i40e: prevent crash on probe if hw registers have invalid values net: usb: smsc95xx: Fix an error code in smsc95xx_reset() ipv4: fib: annotate races around nh->nh_saddr_genid and nh->nh_saddr tun: prevent negative ifindex tcp: tsq: relax tcp_small_queue_check() when rtx queue contains a single skb tcp: fix excessive TLP and RACK timeouts from HZ rounding net: rfkill: gpio: prevent value glitch during probe net: ipv6: fix return value check in esp_remove_trailer net: ipv4: fix return value check in esp_remove_trailer xfrm: interface: use DEV_STATS_INC() xfrm: fix a data-race in xfrm_gen_index() qed: fix LL2 RX buffer allocation netfilter: nft_payload: fix wrong mac header matching KVM: x86: Mask LVTPC when handling a PMI regmap: fix NULL deref on lookup nfc: nci: fix possible NULL pointer dereference in send_acknowledge() ice: fix over-shifted variable Bluetooth: avoid memcmp() out of bounds warning Bluetooth: hci_event: Fix coding style Bluetooth: vhci: Fix race when opening vhci device Bluetooth: Fix a refcnt underflow problem for hci_conn Bluetooth: Reject connection with the device which has same BD_ADDR Bluetooth: hci_event: Ignore NULL link key usb: hub: Guard against accesses to uninitialized BOS descriptors Documentation: sysctl: align cells in second content column dev_forward_skb: do not scrub skb mark within the same name space ravb: Fix use-after-free issue in ravb_tx_timeout_work() powerpc/64e: Fix wrong test in __ptep_test_and_clear_young() powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE dmaengine: mediatek: Fix deadlock caused by synchronize_irq() x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call usb: gadget: udc-xilinx: replace memcpy with memcpy_toio pinctrl: avoid unsafe code pattern in find_pinctrl() cgroup: Remove duplicates in cgroup v1 tasks file Input: xpad - add PXN V900 support Input: psmouse - fix fast_reconnect function for PS/2 mode Input: powermate - fix use-after-free in powermate_config_complete ceph: fix incorrect revoked caps assert in ceph_fill_file_size() libceph: use kernel_connect() mcb: remove is_added flag from mcb_device struct iio: pressure: ms5611: ms5611_prom_is_valid false negative bug iio: pressure: dps310: Adjust Timeout Settings iio: pressure: bmp280: Fix NULL pointer exception usb: musb: Modify the "HWVers" register address usb: musb: Get the musb_qh poniter after musb_giveback usb: dwc3: Soft reset phy on probe for host net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read usb: xhci: xhci-ring: Use sysdev for mapping bounce buffer dmaengine: stm32-mdma: abort resume if no ongoing transfer workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask() nfc: nci: assert requested protocol is valid net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() ixgbe: fix crash with empty VF macvlan list drm/vmwgfx: fix typo of sizeof argument xen-netback: use default TX queue size for vifs mlxsw: fix mlxsw_sp2_nve_vxlan_learning_set() return type ieee802154: ca8210: Fix a potential UAF in ca8210_probe ravb: Fix up dma_free_coherent() call in ravb_remove() drm/msm/dsi: skip the wait for video mode done if not applicable drm: etvnaviv: fix bad backport leading to warning net: prevent address rewrite in kernel_bind() quota: Fix slow quotaoff HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect pwm: hibvt: Explicitly set .polarity in .get_state() lib/test_meminit: fix off-by-one error in test_pages() RDMA/cxgb4: Check skb value for failure to allocate Reapply "ANDROID: Revert "tracing/ring-buffer: Have polling block on watermark"" Revert "ring-buffer: Update "shortest_full" in polling" Revert "ANDROID: Revert "tracing/ring-buffer: Have polling block on watermark"" Revert "net: bridge: use DEV_STATS_INC()" FROMLIST: lib/test_meminit: fix off-by-one error in test_pages() Linux 5.4.258 xen/events: replace evtchn_rwlock with RCU ima: rework CONFIG_IMA dependency block NFS: Fix a race in __nfs_list_for_each_server() parisc: Restore __ldcw_align for PA-RISC 2.0 processors RDMA/mlx5: Fix NULL string error RDMA/siw: Fix connection failure handling RDMA/uverbs: Fix typo of sizeof argument RDMA/cma: Fix truncation compilation warning in make_cma_ports gpio: pxa: disable pinctrl calls for MMP_GPIO gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config() IB/mlx4: Fix the size of a buffer in add_port_entries() RDMA/core: Require admin capabilities to set system parameters cpupower: add Makefile dependencies for install targets sctp: update hb timer immediately after users change hb_interval sctp: update transport state when processing a dupcook packet tcp: fix delayed ACKs for MSS boundary condition tcp: fix quick-ack counting to count actual ACKs of new data net: stmmac: dwmac-stm32: fix resume on STM32 MCU netfilter: handle the connecting collision properly in nf_conntrack_proto_sctp net: nfc: llcp: Add lock when modifying device list net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg net: dsa: mv88e6xxx: Avoid EEPROM timeout when EEPROM is absent ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data() net: fix possible store tearing in neigh_periodic_work() modpost: add missing else to the "of" check NFSv4: Fix a nfs4_state_manager() race NFS: Add a helper nfs_client_for_each_server() NFS4: Trace state recovery operation wifi: mt76: mt76x02: fix MT76x0 external LNA gain handling wifi: mwifiex: Fix tlv_buf_left calculation scsi: target: core: Fix deadlock due to recursive locking drivers/net: process the result of hdlc_open() and add call of hdlc_close() in uhdlc_close() qed/red_ll2: Fix undefined behavior bug in struct qed_ll2_info ima: Finish deprecation of IMA_TRUSTED_KEYRING Kconfig wifi: mwifiex: Fix oob check condition in mwifiex_process_rx_packet regmap: rbtree: Fix wrong register marked as in-cache when creating new node wifi: iwlwifi: dbg_ini: fix structure packing ubi: Refuse attaching if mtd's erasesize is 0 net: prevent rewrite of msg_name in sock_sendmsg() net: replace calls to sock->ops->connect() with kernel_connect() fs: binfmt_elf_efpic: fix personality for ELF-FDPIC scsi: zfcp: Fix a double put in zfcp_port_enqueue() ata: libata-sata: increase PMP SRST timeout to 10s Revert "PCI: qcom: Disable write access to read only registers for IP v2.3.3" ata: libata-core: Do not register PM operations for SAS ports rbd: take header_rwsem in rbd_dev_refresh() only when updating ata: libata-core: Fix port and device removal rbd: decouple parent info read-in from updating rbd_dev ata: libata-core: Fix ata_port_request_pm() locking rbd: decouple header read-in from updating rbd_dev->header rbd: move rbd_dev_refresh() definition ring-buffer: Update "shortest_full" in polling i2c: i801: unregister tco_pdev in i801_probe() error path net: thunderbolt: Fix TCPv6 GSO checksum calculation ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES btrfs: properly report 0 avail for very full file systems ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() serial: 8250_port: Check IRQ data before use Smack:- Use overlay inode label in smack_inode_copy_up() smack: Retrieve transmuting information in smack_inode_getsecurity() smack: Record transmuting in smk_transmuted i40e: fix return of uninitialized aq_ret in i40e_set_vsi_promisc i40e: always propagate error value in i40e_set_vsi_promisc() ring-buffer: Avoid softlockup in ring_buffer_resize() selftests/ftrace: Correctly enable event in instance-event.tc i40e: improve locking of mac_filter_hash watchdog: iTCO_wdt: Set NO_REBOOT if the watchdog is not already running watchdog: iTCO_wdt: No need to stop the timer in probe nvme-pci: do not set the NUMA node of device if it has none fbdev/sh7760fb: Depend on FB=y ncsi: Propagate carrier gain/loss events to the NCSI controller powerpc/watchpoints: Annotate atomic context in more places bpf: Clarify error expectations from bpf_clone_redirect spi: nxp-fspi: reset the FLSHxCR1 registers ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset() parisc: irq: Make irq_stack_union static to avoid sparse warning parisc: drivers: Fix sparse warning parisc: iosapic.c: Fix sparse warnings parisc: sba: Fix compile warning wrt list of SBA devices gpio: pmic-eic-sprd: Add can_sleep flag for PMIC EIC chip xtensa: boot/lib: fix function prototypes xtensa: boot: don't add include-dirs xtensa: iss/network: make functions static xtensa: add default definition for XCHAL_HAVE_DIV32 bus: ti-sysc: Fix SYSC_QUIRK_SWSUP_SIDLE_ACT handling for uart wake-up ARM: dts: ti: omap: motorola-mapphone: Fix abe_clkctrl warning on boot clk: tegra: fix error return case for recalc_rate scsi: qla2xxx: Fix deletion race condition MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled scsi: qla2xxx: Fix update_fcport for current_topology ata: libata: disallow dev-initiated LPM transitions to unsupported states Input: i8042 - add quirk for TUXEDO Gemini 17 Gen1/Clevo PD70PN drm/amd/display: prevent potential division by zero errors i2c: mux: demux-pinctrl: check the return value of devm_kstrdup() drm/amd/display: Fix LFC multiplier changing erratically gpio: tb10x: Fix an error handling path in tb10x_gpio_probe() drm/amd/display: Reinstate LFC optimization netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP net: rds: Fix possible NULL-pointer dereference team: fix null-ptr-deref when team device type is changed net: bridge: use DEV_STATS_INC() net: hns3: add 5ms delay before clear firmware reset irq source dccp: fix dccp_v4_err()/dccp_v6_err() again powerpc/perf/hv-24x7: Update domain value check ipv4: fix null-deref in ipv4_link_failure i40e: Fix VF VLAN offloading when port VLAN is configured i40e: Fix warning message and call stack during rmmod i40e driver i40e: Remove scheduling while atomic possibility i40e: Fix for persistent lldp support ASoC: imx-audmix: Fix return error with devm_clk_get() selftests: tls: swap the TX and RX sockets in some tests ASoC: meson: spdifin: start hw on dai probe selftests/tls: Add {} to avoid static checker warning ext4: do not let fstrim block system suspend bpf: Avoid deadlock when using queue and stack maps from NMI ext4: move setting of trimmed bit into ext4_try_to_trim_range() netfilter: nf_tables: disallow element removal on anonymous sets ext4: replace the traditional ternary conditional operator with with max()/min() ext4: mark group as trimmed only if it was fully scanned ext4: change s_last_trim_minblks type to unsigned long ext4: scope ret locally in ext4_try_to_trim_range() ext4: add new helper interface ext4_try_to_trim_range() ext4: remove the 'group' parameter of ext4_trim_extent ata: libahci: clear pending interrupt status tracing: Increase trace array ref count on enable and filter files SUNRPC: Mark the cred for revalidation if the server rejects it NFS/pNFS: Report EINVAL errors from connect() to the server Revert "drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01" Revert "usb: typec: bus: verify partner exists in typec_altmode_attention" Revert "fs/nls: make load_nls() take a const parameter" Revert "ip_tunnels: use DEV_STATS_INC()" Linux 5.4.257 net/sched: Retire rsvp classifier drm/amdgpu: fix amdgpu_cs_p1_user_fence mtd: rawnand: brcmnand: Fix ECC level field setting for v7.2 controller ext4: fix rec_len verify error scsi: megaraid_sas: Fix deadlock on firmware crashdump i2c: aspeed: Reset the i2c controller when timeout occurs tracefs: Add missing lockdown check to tracefs_create_dir() nfsd: fix change_info in NFSv4 RENAME replies tracing: Have option files inc the trace array ref count tracing: Have current_trace inc the trace array ref count btrfs: fix lockdep splat and potential deadlock after failure running delayed items attr: block mode changes of symlinks md/raid1: fix error: ISO C90 forbids mixed declarations selftests: tracing: Fix to unmount tracefs for recovering environment btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super btrfs: add a helper to read the superblock metadata_uuid btrfs: move btrfs_pinned_by_swapfile prototype into volumes.h perf tools: Add an option to build without libbfd perf jevents: Make build dependency on test JSONs tools features: Add feature test to check if libbfd has buildid support kobject: Add sanity check for kset->kobj.ktype in kset_register() media: pci: ipu3-cio2: Initialise timing struct to avoid a compiler warning serial: cpm_uart: Avoid suspicious locking scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc media: pci: cx23885: replace BUG with error return media: tuners: qt1010: replace BUG_ON with a regular error media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() media: anysee: fix null-ptr-deref in anysee_master_xfer media: af9005: Fix null-ptr-deref in af9005_i2c_xfer media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer powerpc/pseries: fix possible memory leak in ibmebus_bus_init() jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount fs/jfs: prevent double-free in dbUnmount() after failed jfs_remount() ext2: fix datatype of block number in ext2_xattr_set2() md: raid1: fix potential OOB in raid1_remove_disk() bus: ti-sysc: Configure uart quirks for k3 SoC drm/exynos: fix a possible null-pointer dereference due to data race in exynos_drm_crtc_atomic_disable() wifi: mac80211_hwsim: drop short frames alx: fix OOB-read compiler warning mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450 tpm_tis: Resend command to recover from data transfer errors crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() wifi: mwifiex: fix fortify warning wifi: ath9k: fix printk specifier devlink: remove reload failed checks in params get/set callbacks hw_breakpoint: fix single-stepping when using bpf_overflow_handler perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 kernel/fork: beware of __put_task_struct() calling context ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock btrfs: output extra debug info if we failed to find an inline backref autofs: fix memory leak of waitqueues in autofs_catatonic_mode parisc: Drop loops_per_jiffy from per_cpu struct drm/amd/display: Fix a bug when searching for insert_above_mpcc kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). ixgbe: fix timestamp configuration code net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict() platform/mellanox: mlxbf-tmfifo: Drop jumbo frames mlxbf-tmfifo: sparse tags for config access platform/mellanox: mlxbf-tmfifo: Drop the Rx packet if no more descriptors kcm: Fix memory leak in error path of kcm_sendmsg() r8152: check budget for r8152_poll() net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all() net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() net: ipv4: fix one memleak in __inet_del_ifa() clk: imx8mm: Move 1443X/1416X PLL clock structure to common place ARM: dts: BCM5301X: Extend RAM to full 256MB for Linksys EA6500 V2 usb: typec: bus: verify partner exists in typec_altmode_attention usb: typec: tcpm: Refactor tcpm_handle_vdm_request usb: typec: tcpm: Refactor tcpm_handle_vdm_request payload handling perf tools: Handle old data in PERF_RECORD_ATTR perf hists browser: Fix hierarchy mode header mtd: rawnand: brcmnand: Fix potential false time out warning mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write mtd: rawnand: brcmnand: Fix crash during the panic_write btrfs: use the correct superblock to compare fsid in btrfs_validate_super btrfs: don't start transaction when joining with TRANS_JOIN_NOSTART fuse: nlookup missing decrement in fuse_direntplus_link ata: pata_ftide010: Add missing MODULE_DESCRIPTION ata: sata_gemini: Add missing MODULE_DESCRIPTION sh: boards: Fix CEU buffer size passed to dma_declare_coherent_memory() net: hns3: fix the port information display when sfp is absent netfilter: nfnetlink_osf: avoid OOB read ip_tunnels: use DEV_STATS_INC() idr: fix param name in idr_alloc_cyclic() doc s390/zcrypt: don't leak memory if dev_set_name() fails igb: Change IGB_MIN to allow set rx/tx value between 64 and 80 igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80 igc: Change IGC_MIN to allow set rx/tx value between 64 and 80 kcm: Destroy mutex in kcm_exit_net() net: sched: sch_qfq: Fix UAF in qfq_dequeue() af_unix: Fix data race around sk->sk_err. af_unix: Fix data-races around sk->sk_shutdown. af_unix: Fix data-race around unix_tot_inflight. af_unix: Fix data-races around user->unix_inflight. net: ipv6/addrconf: avoid integer underflow in ipv6_create_tempaddr veth: Fixing transmit return status for dropped packets igb: disable virtualization features on 82580 net: read sk->sk_family once in sk_mc_loop() ipv4: annotate data-races around fi->fib_dead sctp: annotate data-races around sk->sk_wmem_queued pwm: lpc32xx: Remove handling of PWM channels watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load perf top: Don't pass an ERR_PTR() directly to perf_session__delete() x86/virt: Drop unnecessary check on extended CPUID level in cpu_has_svm() perf annotate bpf: Don't enclose non-debug code with an assert() kconfig: fix possible buffer overflow NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info soc: qcom: qmi_encdec: Restrict string length in decode clk: qcom: gcc-mdm9615: use proper parent for pll0_vote clock parisc: led: Reduce CPU overhead for disk & lan LED computation parisc: led: Fix LAN receive and transmit LEDs lib/test_meminit: allocate pages up to order MAX_ORDER drm/ast: Fix DRAM init on AST2200 fbdev/ep93xx-fb: Do not assign to struct fb_info.dev scsi: qla2xxx: Remove unsupported ql2xenabledif option scsi: qla2xxx: Turn off noisy message log scsi: qla2xxx: Fix erroneous link up failure scsi: qla2xxx: fix inconsistent TMF timeout net/ipv6: SKB symmetric hash should incorporate transport ports drm: fix double free for gbo in drm_gem_vram_init and drm_gem_vram_create udf: initialize newblock to 0 usb: typec: tcpci: clear the fault status bit serial: sc16is7xx: fix broken port 0 uart init sc16is7xx: Set iobase to device index cpufreq: brcmstb-avs-cpufreq: Fix -Warray-bounds bug crypto: stm32 - fix loop iterating through scatterlist for DMA s390/ipl: add missing secure/has_secure file to ipl type 'unknown' pstore/ram: Check start of empty przs during init fsverity: skip PKCS#7 parser when keyring is empty net: handle ARPHRD_PPP in dev_is_mac_header_xmit() X.509: if signature is unsupported skip validation dccp: Fix out of bounds access in DCCP error handler dlm: fix plock lookup when using multiple lockspaces parisc: Fix /proc/cpuinfo output for lscpu procfs: block chmod on /proc/thread-self/comm Revert "PCI: Mark NVIDIA T4 GPUs to avoid bus reset" ntb: Fix calculation ntb_transport_tx_free_entry() ntb: Clean up tx tail index on link down ntb: Drop packets when qp link is down media: dvb: symbol fixup for dvb_attach() xtensa: PMU: fix base address for the newer hardware backlight/lv5207lp: Compare against struct fb_info.device backlight/bd6107: Compare against struct fb_info.device backlight/gpio_backlight: Compare against struct fb_info.device ARM: OMAP2+: Fix -Warray-bounds warning in _pwrdm_state_switch() ipmi_si: fix a memleak in try_smi_init() ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl PM / devfreq: Fix leak in devfreq_dev_release() igb: set max size RX buffer when store bad packet is enabled skbuff: skb_segment, Call zero copy functions before using skbuff frags netfilter: xt_sctp: validate the flag_info count netfilter: xt_u32: validate user space input netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU virtio_ring: fix avail_wrap_counter in virtqueue_add_packed cpufreq: Fix the race condition while updating the transition_task of policy dmaengine: ste_dma40: Add missing IRQ check in d40_probe um: Fix hostaudio build errors mtd: rawnand: fsmc: handle clk prepare error in fsmc_nand_resume() rpmsg: glink: Add check for kstrdup phy/rockchip: inno-hdmi: do not power on rk3328 post pll on reg write phy/rockchip: inno-hdmi: round fractal pixclock in rk3328 recalc_rate phy/rockchip: inno-hdmi: use correct vco_div_5 macro on rk3328 tracing: Fix race issue between cpu buffer write and swap x86/speculation: Mark all Skylake CPUs as vulnerable to GDS HID: multitouch: Correct devm device reference for hidinput input_dev name HID: logitech-dj: Fix error handling in logi_dj_recv_switch_to_dj_mode() RDMA/siw: Correct wrong debug message RDMA/siw: Balance the reference of cep->kref in the error path Revert "IB/isert: Fix incorrect release of isert connection" amba: bus: fix refcount leak serial: tegra: handle clk prepare error in tegra_uart_hw_init() scsi: fcoe: Fix potential deadlock on &fip->ctlr_lock scsi: core: Use 32-bit hostnum in scsi_host_lookup() media: ov2680: Fix regulators being left enabled on ov2680_power_on() errors media: ov2680: Fix vflip / hflip set functions media: ov2680: Fix ov2680_bayer_order() media: ov2680: Remove auto-gain and auto-exposure controls media: i2c: ov2680: Set V4L2_CTRL_FLAG_MODIFY_LAYOUT on flips media: ov5640: Enable MIPI interface in ov5640_set_power_mipi() media: i2c: ov5640: Configure HVP lines in s_power callback USB: gadget: f_mass_storage: Fix unused variable warning media: go7007: Remove redundant if statement iommu/vt-d: Fix to flush cache of PASID directory table IB/uverbs: Fix an potential error pointer dereference driver core: test_async: fix an error code dma-buf/sync_file: Fix docs syntax coresight: tmc: Explicit type conversions to prevent integer overflow scsi: qedf: Do not touch __user pointer in qedf_dbg_fp_int_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_debug_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_stop_io_on_error_cmd_read() directly x86/APM: drop the duplicate APM_MINOR_DEV macro serial: sprd: Fix DMA buffer leak issue serial: sprd: Assign sprd_port after initialized to avoid wrong access serial: sprd: remove redundant sprd_port cleanup serial: sprd: getting port index via serial aliases only scsi: qla4xxx: Add length check when parsing nlattrs scsi: be2iscsi: Add length check when parsing nlattrs scsi: iscsi: Add strlen() check in iscsi_if_set{_host}_param() usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host() media: mediatek: vcodec: Return NULL if no vdec_fb is found media: cx24120: Add retval check for cx24120_message_send() media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer() media: dib7000p: Fix potential division by zero drivers: usb: smsusb: fix error handling code in smsusb_init_device media: v4l2-core: Fix a potential resource leak in v4l2_fwnode_parse_link() media: v4l2-fwnode: simplify v4l2_fwnode_parse_link media: v4l2-fwnode: fix v4l2_fwnode_parse_link handling NFS: Guard against READDIR loop when entry names exceed MAXNAMELEN NFSD: da_addr_body field missing in some GETDEVICEINFO replies fs: lockd: avoid possible wrong NULL parameter jfs: validate max amount of blocks before allocation. powerpc/iommu: Fix notifiers being shared by PCI and VIO buses nfs/blocklayout: Use the passed in gfp flags wifi: ath10k: Use RMW accessors for changing LNKCTL drm/radeon: Use RMW accessors for changing LNKCTL drm/radeon: Prefer pcie_capability_read_word() drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/radeon: Correct Transmit Margin masks drm/amdgpu: Use RMW accessors for changing LNKCTL drm/amdgpu: Prefer pcie_capability_read_word() drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/amdgpu: Correct Transmit Margin masks PCI: Add #defines for Enter Compliance, Transmit Margin powerpc/fadump: reset dump area size if fadump memory reserve fails clk: imx: composite-8m: fix clock pauses when set_rate would be a no-op PCI/ASPM: Use RMW accessors for changing LNKCTL PCI: pciehp: Use RMW accessors for changing LNKCTL PCI: Mark NVIDIA T4 GPUs to avoid bus reset clk: sunxi-ng: Modify mismatched function name drivers: clk: keystone: Fix parameter judgment in _of_pll_clk_init() ipmi:ssif: Fix a memory leak when scanning for an adapter ipmi:ssif: Add check for kstrdup ALSA: ac97: Fix possible error value of *rac97 of: unittest: Fix overlay type in apply/revert check drm/mediatek: Fix potential memory leak if vmap() fail audit: fix possible soft lockup in __audit_inode_child() smackfs: Prevent underflow in smk_set_cipso() drm/msm/mdp5: Don't leak some plane state ima: Remove deprecated IMA_TRUSTED_KEYRING Kconfig drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01 drm/armada: Fix off-by-one error in armada_overlay_get_property() of: unittest: fix null pointer dereferencing in of_unittest_find_node_by_name() drm/tegra: dpaux: Fix incorrect return value of platform_get_irq drm/tegra: Remove superfluous error messages around platform_get_irq() md/md-bitmap: hold 'reconfig_mutex' in backlog_store() md/bitmap: don't set max_write_behind if there is no write mostly device drm/amdgpu: Update min() to min_t() in 'amdgpu_info_ioctl' arm64: dts: qcom: sdm845: Add missing RPMh power domain to GCC ARM: dts: BCM53573: Fix Ethernet info for Luxul devices drm: adv7511: Fix low refresh rate register for ADV7533/5 ARM: dts: samsung: s5pv210-smdkv210: correct ethernet reg addresses (split) ARM: dts: s5pv210: add dummy 5V regulator for backlight on SMDKv210 ARM: dts: s5pv210: correct ethernet unit address in SMDKV210 ARM: dts: s5pv210: use defines for IRQ flags in SMDKV210 ARM: dts: s5pv210: add RTC 32 KHz clock in SMDKV210 ARM: dts: samsung: s3c6410-mini6410: correct ethernet reg addresses (split) ARM: dts: s3c64xx: align pinctrl with dtschema ARM: dts: s3c6410: align node SROM bus node name with dtschema in Mini6410 ARM: dts: s3c6410: move fixed clocks under root node in Mini6410 drm/etnaviv: fix dumping of active MMU context ARM: dts: BCM53573: Use updated "spi-gpio" binding properties ARM: dts: BCM53573: Add cells sizes to PCIe node ARM: dts: BCM53573: Drop nonexistent "default-off" LED trigger drm/amdgpu: avoid integer overflow warning in amdgpu_device_resize_fb_bar() quota: fix dqput() to follow the guarantees dquot_srcu should provide quota: add new helper dquot_active() quota: rename dquot_active() to inode_quota_active() quota: factor out dquot_write_dquot() quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list drm/bridge: tc358764: Fix debug print parameter order netrom: Deny concurrent connect(). net/sched: sch_hfsc: Ensure inner classes have fsc curve mlxsw: i2c: Limit single transaction buffer size mlxsw: i2c: Fix chunk size setting in output mailbox buffer net: arcnet: Do not call kfree_skb() under local_irq_disable() wifi: ath9k: use IS_ERR() with debugfs_create_dir() wifi: mwifiex: avoid possible NULL skb pointer dereference wifi: ath9k: protect WMI command response buffer replacement with a lock wifi: ath9k: fix races between ath9k_wmi_cmd and ath9k_wmi_ctrl_rx wifi: mwifiex: Fix missed return in oob checks failed path wifi: mwifiex: fix memory leak in mwifiex_histogram_read() fs: ocfs2: namei: check return value of ocfs2_add_entry() lwt: Check LWTUNNEL_XMIT_CONTINUE strictly lwt: Fix return values of BPF xmit ops hwrng: iproc-rng200 - Implement suspend and resume calls hwrng: iproc-rng200 - use semicolons rather than commas to separate statements crypto: caam - fix unchecked return value error Bluetooth: nokia: fix value check in nokia_bluetooth_serdev_probe() crypto: stm32 - Properly handle pm_runtime_get failing wifi: mwifiex: fix error recovery in PCIE buffer descriptor management mwifiex: switch from 'pci_' to 'dma_' API wifi: mwifiex: Fix OOB and integer underflow when rx packets can: gs_usb: gs_usb_receive_bulk_callback(): count RX overflow errors also in case of OOM spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe() regmap: rbtree: Use alloc_flags for memory allocations tcp: tcp_enter_quickack_mode() should be static bpf: Clear the probe_addr for uprobe cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit() perf/imx_ddr: don't enable counter0 if none of 4 counters are used x86/decompressor: Don't rely on upper 32 bits of GPRs being preserved x86/boot: Annotate local functions x86/asm: Make more symbols local OPP: Fix passing 0 to PTR_ERR in _opp_attach_genpd() tmpfs: verify {g,u}id mount options correctly fs: Fix error checking for d_hash_and_lookup() new helper: lookup_positive_unlocked() eventfd: prevent underflow for eventfd semaphores eventfd: Export eventfd_ctx_do_read() reiserfs: Check the return value from __getblk() Revert "net: macsec: preserve ingress frame ordering" udf: Handle error when adding extent to a file udf: Check consistency of Space Bitmap Descriptor powerpc/32s: Fix assembler warning about r0 net: Avoid address overwrite in kernel_connect platform/mellanox: Fix mlxbf-tmfifo not handling all virtio CONSOLE notifications ALSA: seq: oss: Fix racy open/close of MIDI devices scsi: storvsc: Always set no_report_opcodes cifs: add a warning when the in-flight count goes negative sctp: handle invalid error codes without calling BUG() bnx2x: fix page fault following EEH recovery netlabel: fix shift wrapping bug in netlbl_catmap_setlong() scsi: qedi: Fix potential deadlock on &qedi_percpu->p_work_lock idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM net: usb: qmi_wwan: add Quectel EM05GV2 clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM security: keys: perform capable check only on privileged operations platform/x86: huawei-wmi: Silence ambient light sensor platform/x86: intel: hid: Always call BTNL ACPI method ASoC: atmel: Fix the 8K sample parameter in I2SC master ASoc: codecs: ES8316: Fix DMIC config fs/nls: make load_nls() take a const parameter s390/dasd: fix hanging device after request requeue s390/dasd: use correct number of retries for ERP requests m68k: Fix invalid .section syntax vxlan: generalize vxlan_parse_gpe_hdr and remove unused args ethernet: atheros: fix return value check in atl1c_tso_csum() ASoC: da7219: Check for failure reading AAD IRQ events ASoC: da7219: Flush pending AAD IRQ when suspending 9p: virtio: make sure 'offs' is initialized in zc_request pinctrl: amd: Don't show `Invalid config param` errors nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() fsi: master-ast-cf: Add MODULE_FIRMWARE macro firmware: stratix10-svc: Fix an NULL vs IS_ERR() bug in probe serial: sc16is7xx: fix bug when first setting GPIO direction Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition staging: rtl8712: fix race condition HID: wacom: remove the battery when the EKR is off USB: serial: option: add FOXCONN T99W368/T99W373 product USB: serial: option: add Quectel EM05G variant (0x030e) modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules rtc: ds1685: use EXPORT_SYMBOL_GPL for ds1685_rtc_poweroff net: enetc: use EXPORT_SYMBOL_GPL for enetc_phc_index mmc: au1xmmc: force non-modular build and remove symbol_get usage ARM: pxa: remove use of symbol_get() erofs: ensure that the post-EOF tails are all zeroed Linux 5.4.256 Revert "MIPS: Alchemy: fix dbdma2" powerpc/pmac/smp: Drop unnecessary volatile qualifier powerpc/pmac/smp: Avoid unused-variable warnings Revert "drm/display/dp: Fix the DP DSC Receiver cap size" Revert "macsec: Fix traffic counters/statistics" Revert "macsec: use DEV_STATS_INC()" ANDROID: GKI: add back pm_runtime_get_if_in_use() Revert "interconnect: Add helpers for enabling/disabling a path" Revert "interconnect: Do not skip aggregation for disabled paths" Revert "ALSA: pcm: Set per-card upper limit of PCM buffer allocations" Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available" Revert "ALSA: pcm: Fix potential data race at PCM memory allocation helpers" Revert "ALSA: pcm: Fix build error on m68k and others" Revert "Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available"" Revert "ALSA: pcm: Check for null pointer of pointer substream before dereferencing it" Linux 5.4.255 dma-buf/sw_sync: Avoid recursive lock during fence signal pinctrl: renesas: rza2: Add lock around pinctrl_generic{{add,remove}_group,{add,remove}_function} clk: Fix undefined reference to `clk_rate_exclusive_{get,put}' scsi: core: raid_class: Remove raid_component_add() scsi: snic: Fix double free in snic_tgt_create() irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable Documentation/sysctl: document page_lock_unfairness ALSA: pcm: Check for null pointer of pointer substream before dereferencing it interconnect: Do not skip aggregation for disabled paths Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available" ALSA: pcm: Fix build error on m68k and others rtnetlink: Reject negative ifindexes in RTM_NEWLINK mm: allow a controlled amount of unfairness in the page lock x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 drm/display/dp: Fix the DP DSC Receiver cap size PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus media: vcodec: Fix potential array out-of-bounds in encoder queue_setup radix tree: remove unused variable lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels batman-adv: Hold rtnl lock during MTU update via netlink batman-adv: Fix batadv_v_ogm_aggr_send memory leak batman-adv: Fix TT global entry leak when client roamed back batman-adv: Do not get eth header before batadv_check_management_packet batman-adv: Don't increase MTU when set by user batman-adv: Trigger events for auto adjusted MTU nfsd: Fix race to FREE_STATEID and cl_revoked clk: Fix slab-out-of-bounds error in devm_clk_release() NFSv4: Fix dropped lock for racing OPEN and delegation return ibmveth: Use dcbf rather than dcbfl bonding: fix macvlan over alb bond support net: remove bond_slave_has_mac_rcu() net/sched: fix a qdisc modification with ambiguous command request igb: Avoid starting unnecessary workqueues net: validate veth and vxcan peer ifindexes net: bcmgenet: Fix return value check for fixed_phy_register() net: bgmac: Fix return value check for fixed_phy_register() ipvlan: Fix a reference count leak warning in ipvlan_ns_exit() dccp: annotate data-races in dccp_poll() sock: annotate data-races around prot->memory_pressure octeontx2-af: SDP: fix receive link config tracing: Fix memleak due to race between current_tracer and trace drm/amd/display: check TG is non-null before checking if enabled drm/amd/display: do not wait for mpc idle if tg is disabled ASoC: fsl_sai: Disable bit clock with transmitter ASoC: fsl_sai: Add new added registers and new bit definition ASoC: fsl_sai: Refine enable/disable TE/RE sequence in trigger() regmap: Account for register length in SMBus I/O limits ALSA: pcm: Fix potential data race at PCM memory allocation helpers ALSA: pcm: Use SG-buffer only when direct DMA is available ALSA: pcm: Set per-card upper limit of PCM buffer allocations dm integrity: reduce vmalloc space footprint on 32-bit architectures dm integrity: increase RECALC_SECTORS to improve recalculate speed fbdev: fix potential OOB read in fast_imageblit() fbdev: Fix sys_imageblit() for arbitrary image widths fbdev: Improve performance of sys_imageblit() MIPS: cpu-features: Use boot_cpu_type for CPU type based features MIPS: cpu-features: Enable octeon_cache by cpu_type fs: dlm: fix mismatch of plock results from userspace fs: dlm: use dlm_plock_info for do_unlock_close fs: dlm: change plock interrupted message to debug again fs: dlm: add pid to debug log dlm: replace usage of found with dedicated list iterator variable dlm: improve plock logging if interrupted PCI: acpiphp: Reassign resources on bridge if necessary net: phy: broadcom: stub c45 read/write for 54810 mmc: f-sdh30: fix order of function calls in sdhci_f_sdh30_remove net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure net: fix the RTO timer retransmitting skb every 1ms if linear option is enabled virtio-net: set queues after driver_ok af_unix: Fix null-ptr-deref in unix_stream_sendpage(). netfilter: set default timeout to 3 secs for sctp shutdown send and recv state mmc: block: Fix in_flight[issue_type] value error mmc: wbsd: fix double mmc_free_host() in wbsd_init() cifs: Release folio lock on fscache read hit. ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces. serial: 8250: Fix oops for port->pm on uart_change_pm() ASoC: meson: axg-tdm-formatter: fix channel slot allocation ASoC: rt5665: add missed regulator_bulk_disable ARM: dts: imx: Set default tuning step for imx6sx usdhc ARM: dts: imx: Set default tuning step for imx7d usdhc ARM: dts: imx: Adjust dma-apbh node name ARM: dts: imx7s: Drop dma-apb interrupt-names bus: ti-sysc: Flush posted write on enable before reset bus: ti-sysc: Improve reset to work with modules with no sysconfig net: do not allow gso_size to be set to GSO_BY_FRAGS sock: Fix misuse of sk_under_memory_pressure() net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset i40e: fix misleading debug logs team: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves netfilter: nft_dynset: disallow object maps ipvs: fix racy memcpy in proc_do_sync_threshold selftests: mirror_gre_changes: Tighten up the TTL test match xfrm: add NULL check in xfrm_update_ae_params ip_vti: fix potential slab-use-after-free in decode_session6 ip6_vti: fix slab-use-after-free in decode_session6 xfrm: fix slab-use-after-free in decode_session6 xfrm: interface: rename xfrm_interface.c to xfrm_interface_core.c net: af_key: fix sadb_x_filter validation net: xfrm: Fix xfrm_address_filter OOB read btrfs: fix BUG_ON condition in btrfs_cancel_balance tty: serial: fsl_lpuart: Clear the error flags by writing 1 for lpuart32 platforms powerpc/rtas_flash: allow user copy to flash block cache objects fbdev: mmp: fix value check in mmphw_probe() i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue virtio-mmio: don't break lifecycle of vm_dev virtio-mmio: Use to_virtio_mmio_device() to simply code virtio-mmio: convert to devm_platform_ioremap_resource nfsd: Remove incorrect check in nfsd4_validate_stateid nfsd4: kill warnings on testing stateids with mismatched clientids net/ncsi: Fix gma flag setting after response tracing/probes: Fix to update dynamic data counter if fetcharg uses it tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs leds: trigger: netdev: Recheck NETDEV_LED_MODE_LINKUP on dev rename mmc: sunxi: fix deferred probing mmc: bcm2835: fix deferred probing USB: dwc3: qcom: fix NULL-deref on suspend usb: dwc3: qcom: Add helper functions to enable,disable wake irqs interconnect: Add helpers for enabling/disabling a path interconnect: Move internal structs into a separate file irqchip/mips-gic: Use raw spinlock for gic_lock irqchip/mips-gic: Get rid of the reliance on irq_cpu_online() ALSA: hda: Fix unhandled register update during auto-suspend period PM: runtime: Add pm_runtime_get_if_active() PM-runtime: add tracepoints for usage_count changes iommu/amd: Fix "Guest Virtual APIC Table Root Pointer" configuration in IRTE iio: addac: stx104: Fix race condition when converting analog-to-digital iio: addac: stx104: Fix race condition for stx104_write_raw() iio: stx104: Move to addac subdirectory iio: adc: stx104: Implement and utilize register structures iio: adc: stx104: Utilize iomap interface iio: add addac subdirectory IMA: allow/fix UML builds powerpc/kasan: Disable KCOV in KASAN code ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync() ALSA: hda/realtek: Add quirks for Unis H3C Desktop B760 & Q760 drm/amdgpu: Fix potential fence use-after-free v2 Bluetooth: L2CAP: Fix use-after-free pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db() gfs2: Fix possible data races in gfs2_show_options() usb: chipidea: imx: don't request QoS for imx8ulp media: platform: mediatek: vpu: fix NULL ptr dereference media: v4l2-mem2mem: add lock to protect parameter num_rdy FS: JFS: Check for read-only mounted filesystem in txBegin FS: JFS: Fix null-ptr-deref Read in txBegin MIPS: dec: prom: Address -Warray-bounds warning fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev udf: Fix uninitialized array access for some pathnames ovl: check type and offset of struct vfsmount in ovl_entry HID: add quirk for 03f0:464a HP Elite Presenter Mouse quota: fix warning in dqgrab() quota: Properly disable quotas when add_dquot_ref() fails ALSA: emu10k1: roll up loops in DSP setup code for Audigy drm/radeon: Fix integer overflow in radeon_cs_parser_init macsec: use DEV_STATS_INC() macsec: Fix traffic counters/statistics selftests: forwarding: tc_flower: Relax success criterion mmc: sdhci-f-sdh30: Replace with sdhci_pltfm mmc: sdhci_f_sdh30: convert to devm_platform_ioremap_resource Conflicts: drivers/devfreq/devfreq.c drivers/mmc/core/block.c drivers/rpmsg/qcom_glink_native.c include/net/tcp.h Change-Id: Ic33d13451796752e101ed9f9bdb8c80a580af8b5
2045 lines
64 KiB
C
2045 lines
64 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef _LINUX_KERNEL_TRACE_H
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#define _LINUX_KERNEL_TRACE_H
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#include <linux/fs.h>
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#include <linux/atomic.h>
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#include <linux/sched.h>
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#include <linux/clocksource.h>
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#include <linux/ring_buffer.h>
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#include <linux/mmiotrace.h>
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#include <linux/tracepoint.h>
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#include <linux/ftrace.h>
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#include <linux/hw_breakpoint.h>
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#include <linux/trace_seq.h>
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#include <linux/trace_events.h>
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#include <linux/compiler.h>
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#include <linux/glob.h>
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#ifdef CONFIG_FTRACE_SYSCALLS
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#include <asm/unistd.h> /* For NR_SYSCALLS */
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#include <asm/syscall.h> /* some archs define it here */
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#endif
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enum trace_type {
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__TRACE_FIRST_TYPE = 0,
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TRACE_FN,
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TRACE_CTX,
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TRACE_WAKE,
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TRACE_STACK,
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TRACE_PRINT,
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TRACE_BPRINT,
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TRACE_MMIO_RW,
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TRACE_MMIO_MAP,
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TRACE_BRANCH,
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TRACE_GRAPH_RET,
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TRACE_GRAPH_ENT,
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TRACE_USER_STACK,
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TRACE_BLK,
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TRACE_BPUTS,
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TRACE_HWLAT,
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TRACE_RAW_DATA,
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__TRACE_LAST_TYPE,
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};
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#undef __field
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#define __field(type, item) type item;
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#undef __field_struct
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#define __field_struct(type, item) __field(type, item)
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#undef __field_desc
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#define __field_desc(type, container, item)
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#undef __array
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#define __array(type, item, size) type item[size];
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#undef __array_desc
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#define __array_desc(type, container, item, size)
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#undef __dynamic_array
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#define __dynamic_array(type, item) type item[];
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#undef F_STRUCT
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#define F_STRUCT(args...) args
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
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struct struct_name { \
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struct trace_entry ent; \
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tstruct \
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}
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#undef FTRACE_ENTRY_DUP
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#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk, filter)
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#undef FTRACE_ENTRY_REG
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|
#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, \
|
|
filter, regfn) \
|
|
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
|
|
filter)
|
|
|
|
#undef FTRACE_ENTRY_PACKED
|
|
#define FTRACE_ENTRY_PACKED(name, struct_name, id, tstruct, print, \
|
|
filter) \
|
|
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
|
|
filter) __packed
|
|
|
|
#include "trace_entries.h"
|
|
|
|
/*
|
|
* syscalls are special, and need special handling, this is why
|
|
* they are not included in trace_entries.h
|
|
*/
|
|
struct syscall_trace_enter {
|
|
struct trace_entry ent;
|
|
int nr;
|
|
unsigned long args[];
|
|
};
|
|
|
|
struct syscall_trace_exit {
|
|
struct trace_entry ent;
|
|
int nr;
|
|
long ret;
|
|
};
|
|
|
|
struct kprobe_trace_entry_head {
|
|
struct trace_entry ent;
|
|
unsigned long ip;
|
|
};
|
|
|
|
struct kretprobe_trace_entry_head {
|
|
struct trace_entry ent;
|
|
unsigned long func;
|
|
unsigned long ret_ip;
|
|
};
|
|
|
|
/*
|
|
* trace_flag_type is an enumeration that holds different
|
|
* states when a trace occurs. These are:
|
|
* IRQS_OFF - interrupts were disabled
|
|
* IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
|
|
* NEED_RESCHED - reschedule is requested
|
|
* HARDIRQ - inside an interrupt handler
|
|
* SOFTIRQ - inside a softirq handler
|
|
*/
|
|
enum trace_flag_type {
|
|
TRACE_FLAG_IRQS_OFF = 0x01,
|
|
TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
|
|
TRACE_FLAG_NEED_RESCHED = 0x04,
|
|
TRACE_FLAG_HARDIRQ = 0x08,
|
|
TRACE_FLAG_SOFTIRQ = 0x10,
|
|
TRACE_FLAG_PREEMPT_RESCHED = 0x20,
|
|
TRACE_FLAG_NMI = 0x40,
|
|
};
|
|
|
|
#define TRACE_BUF_SIZE 1024
|
|
|
|
struct trace_array;
|
|
|
|
/*
|
|
* The CPU trace array - it consists of thousands of trace entries
|
|
* plus some other descriptor data: (for example which task started
|
|
* the trace, etc.)
|
|
*/
|
|
struct trace_array_cpu {
|
|
atomic_t disabled;
|
|
void *buffer_page; /* ring buffer spare */
|
|
|
|
unsigned long entries;
|
|
unsigned long saved_latency;
|
|
unsigned long critical_start;
|
|
unsigned long critical_end;
|
|
unsigned long critical_sequence;
|
|
unsigned long nice;
|
|
unsigned long policy;
|
|
unsigned long rt_priority;
|
|
unsigned long skipped_entries;
|
|
u64 preempt_timestamp;
|
|
pid_t pid;
|
|
kuid_t uid;
|
|
char comm[TASK_COMM_LEN];
|
|
|
|
bool ignore_pid;
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
bool ftrace_ignore_pid;
|
|
#endif
|
|
};
|
|
|
|
struct tracer;
|
|
struct trace_option_dentry;
|
|
|
|
struct trace_buffer {
|
|
struct trace_array *tr;
|
|
struct ring_buffer *buffer;
|
|
struct trace_array_cpu __percpu *data;
|
|
u64 time_start;
|
|
int cpu;
|
|
};
|
|
|
|
#define TRACE_FLAGS_MAX_SIZE 32
|
|
|
|
struct trace_options {
|
|
struct tracer *tracer;
|
|
struct trace_option_dentry *topts;
|
|
};
|
|
|
|
struct trace_pid_list {
|
|
int pid_max;
|
|
unsigned long *pids;
|
|
};
|
|
|
|
typedef bool (*cond_update_fn_t)(struct trace_array *tr, void *cond_data);
|
|
|
|
/**
|
|
* struct cond_snapshot - conditional snapshot data and callback
|
|
*
|
|
* The cond_snapshot structure encapsulates a callback function and
|
|
* data associated with the snapshot for a given tracing instance.
|
|
*
|
|
* When a snapshot is taken conditionally, by invoking
|
|
* tracing_snapshot_cond(tr, cond_data), the cond_data passed in is
|
|
* passed in turn to the cond_snapshot.update() function. That data
|
|
* can be compared by the update() implementation with the cond_data
|
|
* contained wihin the struct cond_snapshot instance associated with
|
|
* the trace_array. Because the tr->max_lock is held throughout the
|
|
* update() call, the update() function can directly retrieve the
|
|
* cond_snapshot and cond_data associated with the per-instance
|
|
* snapshot associated with the trace_array.
|
|
*
|
|
* The cond_snapshot.update() implementation can save data to be
|
|
* associated with the snapshot if it decides to, and returns 'true'
|
|
* in that case, or it returns 'false' if the conditional snapshot
|
|
* shouldn't be taken.
|
|
*
|
|
* The cond_snapshot instance is created and associated with the
|
|
* user-defined cond_data by tracing_cond_snapshot_enable().
|
|
* Likewise, the cond_snapshot instance is destroyed and is no longer
|
|
* associated with the trace instance by
|
|
* tracing_cond_snapshot_disable().
|
|
*
|
|
* The method below is required.
|
|
*
|
|
* @update: When a conditional snapshot is invoked, the update()
|
|
* callback function is invoked with the tr->max_lock held. The
|
|
* update() implementation signals whether or not to actually
|
|
* take the snapshot, by returning 'true' if so, 'false' if no
|
|
* snapshot should be taken. Because the max_lock is held for
|
|
* the duration of update(), the implementation is safe to
|
|
* directly retrieven and save any implementation data it needs
|
|
* to in association with the snapshot.
|
|
*/
|
|
struct cond_snapshot {
|
|
void *cond_data;
|
|
cond_update_fn_t update;
|
|
};
|
|
|
|
/*
|
|
* The trace array - an array of per-CPU trace arrays. This is the
|
|
* highest level data structure that individual tracers deal with.
|
|
* They have on/off state as well:
|
|
*/
|
|
struct trace_array {
|
|
struct list_head list;
|
|
char *name;
|
|
struct trace_buffer trace_buffer;
|
|
#ifdef CONFIG_TRACER_MAX_TRACE
|
|
/*
|
|
* The max_buffer is used to snapshot the trace when a maximum
|
|
* latency is reached, or when the user initiates a snapshot.
|
|
* Some tracers will use this to store a maximum trace while
|
|
* it continues examining live traces.
|
|
*
|
|
* The buffers for the max_buffer are set up the same as the trace_buffer
|
|
* When a snapshot is taken, the buffer of the max_buffer is swapped
|
|
* with the buffer of the trace_buffer and the buffers are reset for
|
|
* the trace_buffer so the tracing can continue.
|
|
*/
|
|
struct trace_buffer max_buffer;
|
|
bool allocated_snapshot;
|
|
#endif
|
|
#if defined(CONFIG_TRACER_MAX_TRACE) || defined(CONFIG_HWLAT_TRACER)
|
|
unsigned long max_latency;
|
|
#endif
|
|
struct trace_pid_list __rcu *filtered_pids;
|
|
/*
|
|
* max_lock is used to protect the swapping of buffers
|
|
* when taking a max snapshot. The buffers themselves are
|
|
* protected by per_cpu spinlocks. But the action of the swap
|
|
* needs its own lock.
|
|
*
|
|
* This is defined as a arch_spinlock_t in order to help
|
|
* with performance when lockdep debugging is enabled.
|
|
*
|
|
* It is also used in other places outside the update_max_tr
|
|
* so it needs to be defined outside of the
|
|
* CONFIG_TRACER_MAX_TRACE.
|
|
*/
|
|
arch_spinlock_t max_lock;
|
|
int buffer_disabled;
|
|
#ifdef CONFIG_FTRACE_SYSCALLS
|
|
int sys_refcount_enter;
|
|
int sys_refcount_exit;
|
|
struct trace_event_file __rcu *enter_syscall_files[NR_syscalls];
|
|
struct trace_event_file __rcu *exit_syscall_files[NR_syscalls];
|
|
#endif
|
|
int stop_count;
|
|
int clock_id;
|
|
int nr_topts;
|
|
bool clear_trace;
|
|
int buffer_percent;
|
|
unsigned int n_err_log_entries;
|
|
struct tracer *current_trace;
|
|
unsigned int trace_flags;
|
|
unsigned char trace_flags_index[TRACE_FLAGS_MAX_SIZE];
|
|
unsigned int flags;
|
|
raw_spinlock_t start_lock;
|
|
struct list_head err_log;
|
|
struct dentry *dir;
|
|
struct dentry *options;
|
|
struct dentry *percpu_dir;
|
|
struct dentry *event_dir;
|
|
struct trace_options *topts;
|
|
struct list_head systems;
|
|
struct list_head events;
|
|
struct trace_event_file *trace_marker_file;
|
|
cpumask_var_t tracing_cpumask; /* only trace on set CPUs */
|
|
int ref;
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
struct ftrace_ops *ops;
|
|
struct trace_pid_list __rcu *function_pids;
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
/* All of these are protected by the ftrace_lock */
|
|
struct list_head func_probes;
|
|
struct list_head mod_trace;
|
|
struct list_head mod_notrace;
|
|
#endif
|
|
/* function tracing enabled */
|
|
int function_enabled;
|
|
#endif
|
|
int time_stamp_abs_ref;
|
|
struct list_head hist_vars;
|
|
#ifdef CONFIG_TRACER_SNAPSHOT
|
|
struct cond_snapshot *cond_snapshot;
|
|
#endif
|
|
};
|
|
|
|
enum {
|
|
TRACE_ARRAY_FL_GLOBAL = (1 << 0)
|
|
};
|
|
|
|
extern struct list_head ftrace_trace_arrays;
|
|
|
|
extern struct mutex trace_types_lock;
|
|
|
|
extern int trace_array_get(struct trace_array *tr);
|
|
extern void trace_array_put(struct trace_array *tr);
|
|
extern int tracing_check_open_get_tr(struct trace_array *tr);
|
|
|
|
extern int tracing_set_time_stamp_abs(struct trace_array *tr, bool abs);
|
|
extern int tracing_set_clock(struct trace_array *tr, const char *clockstr);
|
|
|
|
extern bool trace_clock_in_ns(struct trace_array *tr);
|
|
|
|
/*
|
|
* The global tracer (top) should be the first trace array added,
|
|
* but we check the flag anyway.
|
|
*/
|
|
static inline struct trace_array *top_trace_array(void)
|
|
{
|
|
struct trace_array *tr;
|
|
|
|
if (list_empty(&ftrace_trace_arrays))
|
|
return NULL;
|
|
|
|
tr = list_entry(ftrace_trace_arrays.prev,
|
|
typeof(*tr), list);
|
|
WARN_ON(!(tr->flags & TRACE_ARRAY_FL_GLOBAL));
|
|
return tr;
|
|
}
|
|
|
|
#define FTRACE_CMP_TYPE(var, type) \
|
|
__builtin_types_compatible_p(typeof(var), type *)
|
|
|
|
#undef IF_ASSIGN
|
|
#define IF_ASSIGN(var, entry, etype, id) \
|
|
if (FTRACE_CMP_TYPE(var, etype)) { \
|
|
var = (typeof(var))(entry); \
|
|
WARN_ON(id != 0 && (entry)->type != id); \
|
|
break; \
|
|
}
|
|
|
|
/* Will cause compile errors if type is not found. */
|
|
extern void __ftrace_bad_type(void);
|
|
|
|
/*
|
|
* The trace_assign_type is a verifier that the entry type is
|
|
* the same as the type being assigned. To add new types simply
|
|
* add a line with the following format:
|
|
*
|
|
* IF_ASSIGN(var, ent, type, id);
|
|
*
|
|
* Where "type" is the trace type that includes the trace_entry
|
|
* as the "ent" item. And "id" is the trace identifier that is
|
|
* used in the trace_type enum.
|
|
*
|
|
* If the type can have more than one id, then use zero.
|
|
*/
|
|
#define trace_assign_type(var, ent) \
|
|
do { \
|
|
IF_ASSIGN(var, ent, struct ftrace_entry, TRACE_FN); \
|
|
IF_ASSIGN(var, ent, struct ctx_switch_entry, 0); \
|
|
IF_ASSIGN(var, ent, struct stack_entry, TRACE_STACK); \
|
|
IF_ASSIGN(var, ent, struct userstack_entry, TRACE_USER_STACK);\
|
|
IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT); \
|
|
IF_ASSIGN(var, ent, struct bprint_entry, TRACE_BPRINT); \
|
|
IF_ASSIGN(var, ent, struct bputs_entry, TRACE_BPUTS); \
|
|
IF_ASSIGN(var, ent, struct hwlat_entry, TRACE_HWLAT); \
|
|
IF_ASSIGN(var, ent, struct raw_data_entry, TRACE_RAW_DATA);\
|
|
IF_ASSIGN(var, ent, struct trace_mmiotrace_rw, \
|
|
TRACE_MMIO_RW); \
|
|
IF_ASSIGN(var, ent, struct trace_mmiotrace_map, \
|
|
TRACE_MMIO_MAP); \
|
|
IF_ASSIGN(var, ent, struct trace_branch, TRACE_BRANCH); \
|
|
IF_ASSIGN(var, ent, struct ftrace_graph_ent_entry, \
|
|
TRACE_GRAPH_ENT); \
|
|
IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \
|
|
TRACE_GRAPH_RET); \
|
|
__ftrace_bad_type(); \
|
|
} while (0)
|
|
|
|
/*
|
|
* An option specific to a tracer. This is a boolean value.
|
|
* The bit is the bit index that sets its value on the
|
|
* flags value in struct tracer_flags.
|
|
*/
|
|
struct tracer_opt {
|
|
const char *name; /* Will appear on the trace_options file */
|
|
u32 bit; /* Mask assigned in val field in tracer_flags */
|
|
};
|
|
|
|
/*
|
|
* The set of specific options for a tracer. Your tracer
|
|
* have to set the initial value of the flags val.
|
|
*/
|
|
struct tracer_flags {
|
|
u32 val;
|
|
struct tracer_opt *opts;
|
|
struct tracer *trace;
|
|
};
|
|
|
|
/* Makes more easy to define a tracer opt */
|
|
#define TRACER_OPT(s, b) .name = #s, .bit = b
|
|
|
|
|
|
struct trace_option_dentry {
|
|
struct tracer_opt *opt;
|
|
struct tracer_flags *flags;
|
|
struct trace_array *tr;
|
|
struct dentry *entry;
|
|
};
|
|
|
|
/**
|
|
* struct tracer - a specific tracer and its callbacks to interact with tracefs
|
|
* @name: the name chosen to select it on the available_tracers file
|
|
* @init: called when one switches to this tracer (echo name > current_tracer)
|
|
* @reset: called when one switches to another tracer
|
|
* @start: called when tracing is unpaused (echo 1 > tracing_on)
|
|
* @stop: called when tracing is paused (echo 0 > tracing_on)
|
|
* @update_thresh: called when tracing_thresh is updated
|
|
* @open: called when the trace file is opened
|
|
* @pipe_open: called when the trace_pipe file is opened
|
|
* @close: called when the trace file is released
|
|
* @pipe_close: called when the trace_pipe file is released
|
|
* @read: override the default read callback on trace_pipe
|
|
* @splice_read: override the default splice_read callback on trace_pipe
|
|
* @selftest: selftest to run on boot (see trace_selftest.c)
|
|
* @print_headers: override the first lines that describe your columns
|
|
* @print_line: callback that prints a trace
|
|
* @set_flag: signals one of your private flags changed (trace_options file)
|
|
* @flags: your private flags
|
|
*/
|
|
struct tracer {
|
|
const char *name;
|
|
int (*init)(struct trace_array *tr);
|
|
void (*reset)(struct trace_array *tr);
|
|
void (*start)(struct trace_array *tr);
|
|
void (*stop)(struct trace_array *tr);
|
|
int (*update_thresh)(struct trace_array *tr);
|
|
void (*open)(struct trace_iterator *iter);
|
|
void (*pipe_open)(struct trace_iterator *iter);
|
|
void (*close)(struct trace_iterator *iter);
|
|
void (*pipe_close)(struct trace_iterator *iter);
|
|
ssize_t (*read)(struct trace_iterator *iter,
|
|
struct file *filp, char __user *ubuf,
|
|
size_t cnt, loff_t *ppos);
|
|
ssize_t (*splice_read)(struct trace_iterator *iter,
|
|
struct file *filp,
|
|
loff_t *ppos,
|
|
struct pipe_inode_info *pipe,
|
|
size_t len,
|
|
unsigned int flags);
|
|
#ifdef CONFIG_FTRACE_STARTUP_TEST
|
|
int (*selftest)(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
#endif
|
|
void (*print_header)(struct seq_file *m);
|
|
enum print_line_t (*print_line)(struct trace_iterator *iter);
|
|
/* If you handled the flag setting, return 0 */
|
|
int (*set_flag)(struct trace_array *tr,
|
|
u32 old_flags, u32 bit, int set);
|
|
/* Return 0 if OK with change, else return non-zero */
|
|
int (*flag_changed)(struct trace_array *tr,
|
|
u32 mask, int set);
|
|
struct tracer *next;
|
|
struct tracer_flags *flags;
|
|
int enabled;
|
|
int ref;
|
|
bool print_max;
|
|
bool allow_instances;
|
|
#ifdef CONFIG_TRACER_MAX_TRACE
|
|
bool use_max_tr;
|
|
#endif
|
|
/* True if tracer cannot be enabled in kernel param */
|
|
bool noboot;
|
|
};
|
|
|
|
|
|
/* Only current can touch trace_recursion */
|
|
|
|
/*
|
|
* For function tracing recursion:
|
|
* The order of these bits are important.
|
|
*
|
|
* When function tracing occurs, the following steps are made:
|
|
* If arch does not support a ftrace feature:
|
|
* call internal function (uses INTERNAL bits) which calls...
|
|
* The function callback, which can use the FTRACE bits to
|
|
* check for recursion.
|
|
*/
|
|
enum {
|
|
TRACE_BUFFER_BIT,
|
|
TRACE_BUFFER_NMI_BIT,
|
|
TRACE_BUFFER_IRQ_BIT,
|
|
TRACE_BUFFER_SIRQ_BIT,
|
|
|
|
/* Start of function recursion bits */
|
|
TRACE_FTRACE_BIT,
|
|
TRACE_FTRACE_NMI_BIT,
|
|
TRACE_FTRACE_IRQ_BIT,
|
|
TRACE_FTRACE_SIRQ_BIT,
|
|
TRACE_FTRACE_TRANSITION_BIT,
|
|
|
|
/* Internal use recursion bits */
|
|
TRACE_INTERNAL_BIT,
|
|
TRACE_INTERNAL_NMI_BIT,
|
|
TRACE_INTERNAL_IRQ_BIT,
|
|
TRACE_INTERNAL_SIRQ_BIT,
|
|
TRACE_INTERNAL_TRANSITION_BIT,
|
|
|
|
TRACE_BRANCH_BIT,
|
|
/*
|
|
* Abuse of the trace_recursion.
|
|
* As we need a way to maintain state if we are tracing the function
|
|
* graph in irq because we want to trace a particular function that
|
|
* was called in irq context but we have irq tracing off. Since this
|
|
* can only be modified by current, we can reuse trace_recursion.
|
|
*/
|
|
TRACE_IRQ_BIT,
|
|
|
|
/* Set if the function is in the set_graph_function file */
|
|
TRACE_GRAPH_BIT,
|
|
|
|
/*
|
|
* In the very unlikely case that an interrupt came in
|
|
* at a start of graph tracing, and we want to trace
|
|
* the function in that interrupt, the depth can be greater
|
|
* than zero, because of the preempted start of a previous
|
|
* trace. In an even more unlikely case, depth could be 2
|
|
* if a softirq interrupted the start of graph tracing,
|
|
* followed by an interrupt preempting a start of graph
|
|
* tracing in the softirq, and depth can even be 3
|
|
* if an NMI came in at the start of an interrupt function
|
|
* that preempted a softirq start of a function that
|
|
* preempted normal context!!!! Luckily, it can't be
|
|
* greater than 3, so the next two bits are a mask
|
|
* of what the depth is when we set TRACE_GRAPH_BIT
|
|
*/
|
|
|
|
TRACE_GRAPH_DEPTH_START_BIT,
|
|
TRACE_GRAPH_DEPTH_END_BIT,
|
|
|
|
/*
|
|
* To implement set_graph_notrace, if this bit is set, we ignore
|
|
* function graph tracing of called functions, until the return
|
|
* function is called to clear it.
|
|
*/
|
|
TRACE_GRAPH_NOTRACE_BIT,
|
|
};
|
|
|
|
#define trace_recursion_set(bit) do { (current)->trace_recursion |= (1<<(bit)); } while (0)
|
|
#define trace_recursion_clear(bit) do { (current)->trace_recursion &= ~(1<<(bit)); } while (0)
|
|
#define trace_recursion_test(bit) ((current)->trace_recursion & (1<<(bit)))
|
|
|
|
#define trace_recursion_depth() \
|
|
(((current)->trace_recursion >> TRACE_GRAPH_DEPTH_START_BIT) & 3)
|
|
#define trace_recursion_set_depth(depth) \
|
|
do { \
|
|
current->trace_recursion &= \
|
|
~(3 << TRACE_GRAPH_DEPTH_START_BIT); \
|
|
current->trace_recursion |= \
|
|
((depth) & 3) << TRACE_GRAPH_DEPTH_START_BIT; \
|
|
} while (0)
|
|
|
|
#define TRACE_CONTEXT_BITS 4
|
|
|
|
#define TRACE_FTRACE_START TRACE_FTRACE_BIT
|
|
|
|
#define TRACE_LIST_START TRACE_INTERNAL_BIT
|
|
|
|
#define TRACE_CONTEXT_MASK ((1 << (TRACE_LIST_START + TRACE_CONTEXT_BITS)) - 1)
|
|
|
|
enum {
|
|
TRACE_CTX_NMI,
|
|
TRACE_CTX_IRQ,
|
|
TRACE_CTX_SOFTIRQ,
|
|
TRACE_CTX_NORMAL,
|
|
TRACE_CTX_TRANSITION,
|
|
};
|
|
|
|
static __always_inline int trace_get_context_bit(void)
|
|
{
|
|
int bit;
|
|
|
|
if (in_interrupt()) {
|
|
if (in_nmi())
|
|
bit = TRACE_CTX_NMI;
|
|
|
|
else if (in_irq())
|
|
bit = TRACE_CTX_IRQ;
|
|
else
|
|
bit = TRACE_CTX_SOFTIRQ;
|
|
} else
|
|
bit = TRACE_CTX_NORMAL;
|
|
|
|
return bit;
|
|
}
|
|
|
|
static __always_inline int trace_test_and_set_recursion(int start)
|
|
{
|
|
unsigned int val = current->trace_recursion;
|
|
int bit;
|
|
|
|
bit = trace_get_context_bit() + start;
|
|
if (unlikely(val & (1 << bit))) {
|
|
/*
|
|
* It could be that preempt_count has not been updated during
|
|
* a switch between contexts. Allow for a single recursion.
|
|
*/
|
|
bit = start + TRACE_CTX_TRANSITION;
|
|
if (trace_recursion_test(bit))
|
|
return -1;
|
|
trace_recursion_set(bit);
|
|
barrier();
|
|
return bit;
|
|
}
|
|
|
|
val |= 1 << bit;
|
|
current->trace_recursion = val;
|
|
barrier();
|
|
|
|
return bit;
|
|
}
|
|
|
|
static __always_inline void trace_clear_recursion(int bit)
|
|
{
|
|
unsigned int val = current->trace_recursion;
|
|
|
|
bit = 1 << bit;
|
|
val &= ~bit;
|
|
|
|
barrier();
|
|
current->trace_recursion = val;
|
|
}
|
|
|
|
static inline struct ring_buffer_iter *
|
|
trace_buffer_iter(struct trace_iterator *iter, int cpu)
|
|
{
|
|
return iter->buffer_iter ? iter->buffer_iter[cpu] : NULL;
|
|
}
|
|
|
|
int tracer_init(struct tracer *t, struct trace_array *tr);
|
|
int tracing_is_enabled(void);
|
|
void tracing_reset_online_cpus(struct trace_buffer *buf);
|
|
void tracing_reset_current(int cpu);
|
|
void tracing_reset_all_online_cpus(void);
|
|
void tracing_reset_all_online_cpus_unlocked(void);
|
|
int tracing_open_generic(struct inode *inode, struct file *filp);
|
|
int tracing_open_generic_tr(struct inode *inode, struct file *filp);
|
|
int tracing_open_file_tr(struct inode *inode, struct file *filp);
|
|
int tracing_release_file_tr(struct inode *inode, struct file *filp);
|
|
bool tracing_is_disabled(void);
|
|
bool tracer_tracing_is_on(struct trace_array *tr);
|
|
void tracer_tracing_on(struct trace_array *tr);
|
|
void tracer_tracing_off(struct trace_array *tr);
|
|
struct dentry *trace_create_file(const char *name,
|
|
umode_t mode,
|
|
struct dentry *parent,
|
|
void *data,
|
|
const struct file_operations *fops);
|
|
|
|
struct dentry *tracing_init_dentry(void);
|
|
|
|
struct ring_buffer_event;
|
|
|
|
struct ring_buffer_event *
|
|
trace_buffer_lock_reserve(struct ring_buffer *buffer,
|
|
int type,
|
|
unsigned long len,
|
|
unsigned long flags,
|
|
int pc);
|
|
|
|
struct trace_entry *tracing_get_trace_entry(struct trace_array *tr,
|
|
struct trace_array_cpu *data);
|
|
|
|
struct trace_entry *trace_find_next_entry(struct trace_iterator *iter,
|
|
int *ent_cpu, u64 *ent_ts);
|
|
|
|
void trace_buffer_unlock_commit_nostack(struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event);
|
|
|
|
int trace_empty(struct trace_iterator *iter);
|
|
|
|
void *trace_find_next_entry_inc(struct trace_iterator *iter);
|
|
|
|
void trace_init_global_iter(struct trace_iterator *iter);
|
|
|
|
void tracing_iter_reset(struct trace_iterator *iter, int cpu);
|
|
|
|
unsigned long trace_total_entries_cpu(struct trace_array *tr, int cpu);
|
|
unsigned long trace_total_entries(struct trace_array *tr);
|
|
|
|
void trace_function(struct trace_array *tr,
|
|
unsigned long ip,
|
|
unsigned long parent_ip,
|
|
unsigned long flags, int pc);
|
|
void trace_graph_function(struct trace_array *tr,
|
|
unsigned long ip,
|
|
unsigned long parent_ip,
|
|
unsigned long flags, int pc);
|
|
void trace_latency_header(struct seq_file *m);
|
|
void trace_default_header(struct seq_file *m);
|
|
void print_trace_header(struct seq_file *m, struct trace_iterator *iter);
|
|
int trace_empty(struct trace_iterator *iter);
|
|
|
|
void trace_graph_return(struct ftrace_graph_ret *trace);
|
|
int trace_graph_entry(struct ftrace_graph_ent *trace);
|
|
void set_graph_array(struct trace_array *tr);
|
|
|
|
void tracing_start_cmdline_record(void);
|
|
void tracing_stop_cmdline_record(void);
|
|
void tracing_start_tgid_record(void);
|
|
void tracing_stop_tgid_record(void);
|
|
|
|
int register_tracer(struct tracer *type);
|
|
int is_tracing_stopped(void);
|
|
|
|
loff_t tracing_lseek(struct file *file, loff_t offset, int whence);
|
|
|
|
extern cpumask_var_t __read_mostly tracing_buffer_mask;
|
|
|
|
#define for_each_tracing_cpu(cpu) \
|
|
for_each_cpu(cpu, tracing_buffer_mask)
|
|
|
|
extern unsigned long nsecs_to_usecs(unsigned long nsecs);
|
|
|
|
extern unsigned long tracing_thresh;
|
|
|
|
/* PID filtering */
|
|
|
|
extern int pid_max;
|
|
|
|
bool trace_find_filtered_pid(struct trace_pid_list *filtered_pids,
|
|
pid_t search_pid);
|
|
bool trace_ignore_this_task(struct trace_pid_list *filtered_pids,
|
|
struct task_struct *task);
|
|
void trace_filter_add_remove_task(struct trace_pid_list *pid_list,
|
|
struct task_struct *self,
|
|
struct task_struct *task);
|
|
void *trace_pid_next(struct trace_pid_list *pid_list, void *v, loff_t *pos);
|
|
void *trace_pid_start(struct trace_pid_list *pid_list, loff_t *pos);
|
|
int trace_pid_show(struct seq_file *m, void *v);
|
|
void trace_free_pid_list(struct trace_pid_list *pid_list);
|
|
int trace_pid_write(struct trace_pid_list *filtered_pids,
|
|
struct trace_pid_list **new_pid_list,
|
|
const char __user *ubuf, size_t cnt);
|
|
|
|
#ifdef CONFIG_TRACER_MAX_TRACE
|
|
void update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu,
|
|
void *cond_data);
|
|
void update_max_tr_single(struct trace_array *tr,
|
|
struct task_struct *tsk, int cpu);
|
|
#endif /* CONFIG_TRACER_MAX_TRACE */
|
|
|
|
#ifdef CONFIG_STACKTRACE
|
|
void __trace_stack(struct trace_array *tr, unsigned long flags, int skip,
|
|
int pc);
|
|
#else
|
|
static inline void __trace_stack(struct trace_array *tr, unsigned long flags,
|
|
int skip, int pc)
|
|
{
|
|
}
|
|
#endif /* CONFIG_STACKTRACE */
|
|
|
|
extern u64 ftrace_now(int cpu);
|
|
|
|
extern void trace_find_cmdline(int pid, char comm[]);
|
|
extern int trace_find_tgid(int pid);
|
|
extern void trace_event_follow_fork(struct trace_array *tr, bool enable);
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
extern unsigned long ftrace_update_tot_cnt;
|
|
extern unsigned long ftrace_number_of_pages;
|
|
extern unsigned long ftrace_number_of_groups;
|
|
void ftrace_init_trace_array(struct trace_array *tr);
|
|
#else
|
|
static inline void ftrace_init_trace_array(struct trace_array *tr) { }
|
|
#endif
|
|
#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
|
|
extern int DYN_FTRACE_TEST_NAME(void);
|
|
#define DYN_FTRACE_TEST_NAME2 trace_selftest_dynamic_test_func2
|
|
extern int DYN_FTRACE_TEST_NAME2(void);
|
|
|
|
extern bool ring_buffer_expanded;
|
|
extern bool tracing_selftest_disabled;
|
|
|
|
#ifdef CONFIG_FTRACE_STARTUP_TEST
|
|
extern int trace_selftest_startup_function(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_function_graph(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_irqsoff(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_preemptoff(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_wakeup(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_nop(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
extern int trace_selftest_startup_branch(struct tracer *trace,
|
|
struct trace_array *tr);
|
|
/*
|
|
* Tracer data references selftest functions that only occur
|
|
* on boot up. These can be __init functions. Thus, when selftests
|
|
* are enabled, then the tracers need to reference __init functions.
|
|
*/
|
|
#define __tracer_data __refdata
|
|
#else
|
|
/* Tracers are seldom changed. Optimize when selftests are disabled. */
|
|
#define __tracer_data __read_mostly
|
|
#endif /* CONFIG_FTRACE_STARTUP_TEST */
|
|
|
|
extern void *head_page(struct trace_array_cpu *data);
|
|
extern unsigned long long ns2usecs(u64 nsec);
|
|
extern int
|
|
trace_vbprintk(unsigned long ip, const char *fmt, va_list args);
|
|
extern int
|
|
trace_vprintk(unsigned long ip, const char *fmt, va_list args);
|
|
extern int
|
|
trace_array_vprintk(struct trace_array *tr,
|
|
unsigned long ip, const char *fmt, va_list args);
|
|
int trace_array_printk(struct trace_array *tr,
|
|
unsigned long ip, const char *fmt, ...);
|
|
int trace_array_printk_buf(struct ring_buffer *buffer,
|
|
unsigned long ip, const char *fmt, ...);
|
|
void trace_printk_seq(struct trace_seq *s);
|
|
enum print_line_t print_trace_line(struct trace_iterator *iter);
|
|
|
|
extern char trace_find_mark(unsigned long long duration);
|
|
|
|
struct ftrace_hash;
|
|
|
|
struct ftrace_mod_load {
|
|
struct list_head list;
|
|
char *func;
|
|
char *module;
|
|
int enable;
|
|
};
|
|
|
|
enum {
|
|
FTRACE_HASH_FL_MOD = (1 << 0),
|
|
};
|
|
|
|
struct ftrace_hash {
|
|
unsigned long size_bits;
|
|
struct hlist_head *buckets;
|
|
unsigned long count;
|
|
unsigned long flags;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
struct ftrace_func_entry *
|
|
ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip);
|
|
|
|
static __always_inline bool ftrace_hash_empty(struct ftrace_hash *hash)
|
|
{
|
|
return !hash || !(hash->count || (hash->flags & FTRACE_HASH_FL_MOD));
|
|
}
|
|
|
|
/* Standard output formatting function used for function return traces */
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
|
|
/* Flag options */
|
|
#define TRACE_GRAPH_PRINT_OVERRUN 0x1
|
|
#define TRACE_GRAPH_PRINT_CPU 0x2
|
|
#define TRACE_GRAPH_PRINT_OVERHEAD 0x4
|
|
#define TRACE_GRAPH_PRINT_PROC 0x8
|
|
#define TRACE_GRAPH_PRINT_DURATION 0x10
|
|
#define TRACE_GRAPH_PRINT_ABS_TIME 0x20
|
|
#define TRACE_GRAPH_PRINT_REL_TIME 0x40
|
|
#define TRACE_GRAPH_PRINT_IRQS 0x80
|
|
#define TRACE_GRAPH_PRINT_TAIL 0x100
|
|
#define TRACE_GRAPH_SLEEP_TIME 0x200
|
|
#define TRACE_GRAPH_GRAPH_TIME 0x400
|
|
#define TRACE_GRAPH_PRINT_FILL_SHIFT 28
|
|
#define TRACE_GRAPH_PRINT_FILL_MASK (0x3 << TRACE_GRAPH_PRINT_FILL_SHIFT)
|
|
|
|
extern void ftrace_graph_sleep_time_control(bool enable);
|
|
|
|
#ifdef CONFIG_FUNCTION_PROFILER
|
|
extern void ftrace_graph_graph_time_control(bool enable);
|
|
#else
|
|
static inline void ftrace_graph_graph_time_control(bool enable) { }
|
|
#endif
|
|
|
|
extern enum print_line_t
|
|
print_graph_function_flags(struct trace_iterator *iter, u32 flags);
|
|
extern void print_graph_headers_flags(struct seq_file *s, u32 flags);
|
|
extern void
|
|
trace_print_graph_duration(unsigned long long duration, struct trace_seq *s);
|
|
extern void graph_trace_open(struct trace_iterator *iter);
|
|
extern void graph_trace_close(struct trace_iterator *iter);
|
|
extern int __trace_graph_entry(struct trace_array *tr,
|
|
struct ftrace_graph_ent *trace,
|
|
unsigned long flags, int pc);
|
|
extern void __trace_graph_return(struct trace_array *tr,
|
|
struct ftrace_graph_ret *trace,
|
|
unsigned long flags, int pc);
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
extern struct ftrace_hash __rcu *ftrace_graph_hash;
|
|
extern struct ftrace_hash __rcu *ftrace_graph_notrace_hash;
|
|
|
|
static inline int ftrace_graph_addr(struct ftrace_graph_ent *trace)
|
|
{
|
|
unsigned long addr = trace->func;
|
|
int ret = 0;
|
|
struct ftrace_hash *hash;
|
|
|
|
preempt_disable_notrace();
|
|
|
|
/*
|
|
* Have to open code "rcu_dereference_sched()" because the
|
|
* function graph tracer can be called when RCU is not
|
|
* "watching".
|
|
* Protected with schedule_on_each_cpu(ftrace_sync)
|
|
*/
|
|
hash = rcu_dereference_protected(ftrace_graph_hash, !preemptible());
|
|
|
|
if (ftrace_hash_empty(hash)) {
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (ftrace_lookup_ip(hash, addr)) {
|
|
|
|
/*
|
|
* This needs to be cleared on the return functions
|
|
* when the depth is zero.
|
|
*/
|
|
trace_recursion_set(TRACE_GRAPH_BIT);
|
|
trace_recursion_set_depth(trace->depth);
|
|
|
|
/*
|
|
* If no irqs are to be traced, but a set_graph_function
|
|
* is set, and called by an interrupt handler, we still
|
|
* want to trace it.
|
|
*/
|
|
if (in_irq())
|
|
trace_recursion_set(TRACE_IRQ_BIT);
|
|
else
|
|
trace_recursion_clear(TRACE_IRQ_BIT);
|
|
ret = 1;
|
|
}
|
|
|
|
out:
|
|
preempt_enable_notrace();
|
|
return ret;
|
|
}
|
|
|
|
static inline void ftrace_graph_addr_finish(struct ftrace_graph_ret *trace)
|
|
{
|
|
if (trace_recursion_test(TRACE_GRAPH_BIT) &&
|
|
trace->depth == trace_recursion_depth())
|
|
trace_recursion_clear(TRACE_GRAPH_BIT);
|
|
}
|
|
|
|
static inline int ftrace_graph_notrace_addr(unsigned long addr)
|
|
{
|
|
int ret = 0;
|
|
struct ftrace_hash *notrace_hash;
|
|
|
|
preempt_disable_notrace();
|
|
|
|
/*
|
|
* Have to open code "rcu_dereference_sched()" because the
|
|
* function graph tracer can be called when RCU is not
|
|
* "watching".
|
|
* Protected with schedule_on_each_cpu(ftrace_sync)
|
|
*/
|
|
notrace_hash = rcu_dereference_protected(ftrace_graph_notrace_hash,
|
|
!preemptible());
|
|
|
|
if (ftrace_lookup_ip(notrace_hash, addr))
|
|
ret = 1;
|
|
|
|
preempt_enable_notrace();
|
|
return ret;
|
|
}
|
|
#else
|
|
static inline int ftrace_graph_addr(struct ftrace_graph_ent *trace)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline int ftrace_graph_notrace_addr(unsigned long addr)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void ftrace_graph_addr_finish(struct ftrace_graph_ret *trace)
|
|
{ }
|
|
#endif /* CONFIG_DYNAMIC_FTRACE */
|
|
|
|
extern unsigned int fgraph_max_depth;
|
|
|
|
static inline bool ftrace_graph_ignore_func(struct ftrace_graph_ent *trace)
|
|
{
|
|
/* trace it when it is-nested-in or is a function enabled. */
|
|
return !(trace_recursion_test(TRACE_GRAPH_BIT) ||
|
|
ftrace_graph_addr(trace)) ||
|
|
(trace->depth < 0) ||
|
|
(fgraph_max_depth && trace->depth >= fgraph_max_depth);
|
|
}
|
|
|
|
#else /* CONFIG_FUNCTION_GRAPH_TRACER */
|
|
static inline enum print_line_t
|
|
print_graph_function_flags(struct trace_iterator *iter, u32 flags)
|
|
{
|
|
return TRACE_TYPE_UNHANDLED;
|
|
}
|
|
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
|
|
|
|
extern struct list_head ftrace_pids;
|
|
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
struct ftrace_func_command {
|
|
struct list_head list;
|
|
char *name;
|
|
int (*func)(struct trace_array *tr,
|
|
struct ftrace_hash *hash,
|
|
char *func, char *cmd,
|
|
char *params, int enable);
|
|
};
|
|
extern bool ftrace_filter_param __initdata;
|
|
static inline int ftrace_trace_task(struct trace_array *tr)
|
|
{
|
|
return !this_cpu_read(tr->trace_buffer.data->ftrace_ignore_pid);
|
|
}
|
|
extern int ftrace_is_dead(void);
|
|
int ftrace_create_function_files(struct trace_array *tr,
|
|
struct dentry *parent);
|
|
void ftrace_destroy_function_files(struct trace_array *tr);
|
|
void ftrace_init_global_array_ops(struct trace_array *tr);
|
|
void ftrace_init_array_ops(struct trace_array *tr, ftrace_func_t func);
|
|
void ftrace_reset_array_ops(struct trace_array *tr);
|
|
void ftrace_init_tracefs(struct trace_array *tr, struct dentry *d_tracer);
|
|
void ftrace_init_tracefs_toplevel(struct trace_array *tr,
|
|
struct dentry *d_tracer);
|
|
void ftrace_clear_pids(struct trace_array *tr);
|
|
int init_function_trace(void);
|
|
void ftrace_pid_follow_fork(struct trace_array *tr, bool enable);
|
|
#else
|
|
static inline int ftrace_trace_task(struct trace_array *tr)
|
|
{
|
|
return 1;
|
|
}
|
|
static inline int ftrace_is_dead(void) { return 0; }
|
|
static inline int
|
|
ftrace_create_function_files(struct trace_array *tr,
|
|
struct dentry *parent)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void ftrace_destroy_function_files(struct trace_array *tr) { }
|
|
static inline __init void
|
|
ftrace_init_global_array_ops(struct trace_array *tr) { }
|
|
static inline void ftrace_reset_array_ops(struct trace_array *tr) { }
|
|
static inline void ftrace_init_tracefs(struct trace_array *tr, struct dentry *d) { }
|
|
static inline void ftrace_init_tracefs_toplevel(struct trace_array *tr, struct dentry *d) { }
|
|
static inline void ftrace_clear_pids(struct trace_array *tr) { }
|
|
static inline int init_function_trace(void) { return 0; }
|
|
static inline void ftrace_pid_follow_fork(struct trace_array *tr, bool enable) { }
|
|
/* ftace_func_t type is not defined, use macro instead of static inline */
|
|
#define ftrace_init_array_ops(tr, func) do { } while (0)
|
|
#endif /* CONFIG_FUNCTION_TRACER */
|
|
|
|
#if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_DYNAMIC_FTRACE)
|
|
|
|
struct ftrace_probe_ops {
|
|
void (*func)(unsigned long ip,
|
|
unsigned long parent_ip,
|
|
struct trace_array *tr,
|
|
struct ftrace_probe_ops *ops,
|
|
void *data);
|
|
int (*init)(struct ftrace_probe_ops *ops,
|
|
struct trace_array *tr,
|
|
unsigned long ip, void *init_data,
|
|
void **data);
|
|
void (*free)(struct ftrace_probe_ops *ops,
|
|
struct trace_array *tr,
|
|
unsigned long ip, void *data);
|
|
int (*print)(struct seq_file *m,
|
|
unsigned long ip,
|
|
struct ftrace_probe_ops *ops,
|
|
void *data);
|
|
};
|
|
|
|
struct ftrace_func_mapper;
|
|
typedef int (*ftrace_mapper_func)(void *data);
|
|
|
|
struct ftrace_func_mapper *allocate_ftrace_func_mapper(void);
|
|
void **ftrace_func_mapper_find_ip(struct ftrace_func_mapper *mapper,
|
|
unsigned long ip);
|
|
int ftrace_func_mapper_add_ip(struct ftrace_func_mapper *mapper,
|
|
unsigned long ip, void *data);
|
|
void *ftrace_func_mapper_remove_ip(struct ftrace_func_mapper *mapper,
|
|
unsigned long ip);
|
|
void free_ftrace_func_mapper(struct ftrace_func_mapper *mapper,
|
|
ftrace_mapper_func free_func);
|
|
|
|
extern int
|
|
register_ftrace_function_probe(char *glob, struct trace_array *tr,
|
|
struct ftrace_probe_ops *ops, void *data);
|
|
extern int
|
|
unregister_ftrace_function_probe_func(char *glob, struct trace_array *tr,
|
|
struct ftrace_probe_ops *ops);
|
|
extern void clear_ftrace_function_probes(struct trace_array *tr);
|
|
|
|
int register_ftrace_command(struct ftrace_func_command *cmd);
|
|
int unregister_ftrace_command(struct ftrace_func_command *cmd);
|
|
|
|
void ftrace_create_filter_files(struct ftrace_ops *ops,
|
|
struct dentry *parent);
|
|
void ftrace_destroy_filter_files(struct ftrace_ops *ops);
|
|
#else
|
|
struct ftrace_func_command;
|
|
|
|
static inline __init int register_ftrace_command(struct ftrace_func_command *cmd)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline __init int unregister_ftrace_command(char *cmd_name)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline void clear_ftrace_function_probes(struct trace_array *tr)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* The ops parameter passed in is usually undefined.
|
|
* This must be a macro.
|
|
*/
|
|
#define ftrace_create_filter_files(ops, parent) do { } while (0)
|
|
#define ftrace_destroy_filter_files(ops) do { } while (0)
|
|
#endif /* CONFIG_FUNCTION_TRACER && CONFIG_DYNAMIC_FTRACE */
|
|
|
|
bool ftrace_event_is_function(struct trace_event_call *call);
|
|
|
|
/*
|
|
* struct trace_parser - servers for reading the user input separated by spaces
|
|
* @cont: set if the input is not complete - no final space char was found
|
|
* @buffer: holds the parsed user input
|
|
* @idx: user input length
|
|
* @size: buffer size
|
|
*/
|
|
struct trace_parser {
|
|
bool cont;
|
|
char *buffer;
|
|
unsigned idx;
|
|
unsigned size;
|
|
};
|
|
|
|
static inline bool trace_parser_loaded(struct trace_parser *parser)
|
|
{
|
|
return (parser->idx != 0);
|
|
}
|
|
|
|
static inline bool trace_parser_cont(struct trace_parser *parser)
|
|
{
|
|
return parser->cont;
|
|
}
|
|
|
|
static inline void trace_parser_clear(struct trace_parser *parser)
|
|
{
|
|
parser->cont = false;
|
|
parser->idx = 0;
|
|
}
|
|
|
|
extern int trace_parser_get_init(struct trace_parser *parser, int size);
|
|
extern void trace_parser_put(struct trace_parser *parser);
|
|
extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
|
|
size_t cnt, loff_t *ppos);
|
|
|
|
/*
|
|
* Only create function graph options if function graph is configured.
|
|
*/
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
# define FGRAPH_FLAGS \
|
|
C(DISPLAY_GRAPH, "display-graph"),
|
|
#else
|
|
# define FGRAPH_FLAGS
|
|
#endif
|
|
|
|
#ifdef CONFIG_BRANCH_TRACER
|
|
# define BRANCH_FLAGS \
|
|
C(BRANCH, "branch"),
|
|
#else
|
|
# define BRANCH_FLAGS
|
|
#endif
|
|
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
# define FUNCTION_FLAGS \
|
|
C(FUNCTION, "function-trace"), \
|
|
C(FUNC_FORK, "function-fork"),
|
|
# define FUNCTION_DEFAULT_FLAGS TRACE_ITER_FUNCTION
|
|
#else
|
|
# define FUNCTION_FLAGS
|
|
# define FUNCTION_DEFAULT_FLAGS 0UL
|
|
# define TRACE_ITER_FUNC_FORK 0UL
|
|
#endif
|
|
|
|
#ifdef CONFIG_STACKTRACE
|
|
# define STACK_FLAGS \
|
|
C(STACKTRACE, "stacktrace"),
|
|
#else
|
|
# define STACK_FLAGS
|
|
#endif
|
|
|
|
/*
|
|
* trace_iterator_flags is an enumeration that defines bit
|
|
* positions into trace_flags that controls the output.
|
|
*
|
|
* NOTE: These bits must match the trace_options array in
|
|
* trace.c (this macro guarantees it).
|
|
*/
|
|
#define TRACE_FLAGS \
|
|
C(PRINT_PARENT, "print-parent"), \
|
|
C(SYM_OFFSET, "sym-offset"), \
|
|
C(SYM_ADDR, "sym-addr"), \
|
|
C(VERBOSE, "verbose"), \
|
|
C(RAW, "raw"), \
|
|
C(HEX, "hex"), \
|
|
C(BIN, "bin"), \
|
|
C(BLOCK, "block"), \
|
|
C(PRINTK, "trace_printk"), \
|
|
C(ANNOTATE, "annotate"), \
|
|
C(USERSTACKTRACE, "userstacktrace"), \
|
|
C(SYM_USEROBJ, "sym-userobj"), \
|
|
C(PRINTK_MSGONLY, "printk-msg-only"), \
|
|
C(CONTEXT_INFO, "context-info"), /* Print pid/cpu/time */ \
|
|
C(LATENCY_FMT, "latency-format"), \
|
|
C(RECORD_CMD, "record-cmd"), \
|
|
C(RECORD_TGID, "record-tgid"), \
|
|
C(OVERWRITE, "overwrite"), \
|
|
C(STOP_ON_FREE, "disable_on_free"), \
|
|
C(IRQ_INFO, "irq-info"), \
|
|
C(MARKERS, "markers"), \
|
|
C(EVENT_FORK, "event-fork"), \
|
|
FUNCTION_FLAGS \
|
|
FGRAPH_FLAGS \
|
|
STACK_FLAGS \
|
|
BRANCH_FLAGS
|
|
|
|
/*
|
|
* By defining C, we can make TRACE_FLAGS a list of bit names
|
|
* that will define the bits for the flag masks.
|
|
*/
|
|
#undef C
|
|
#define C(a, b) TRACE_ITER_##a##_BIT
|
|
|
|
enum trace_iterator_bits {
|
|
TRACE_FLAGS
|
|
/* Make sure we don't go more than we have bits for */
|
|
TRACE_ITER_LAST_BIT
|
|
};
|
|
|
|
/*
|
|
* By redefining C, we can make TRACE_FLAGS a list of masks that
|
|
* use the bits as defined above.
|
|
*/
|
|
#undef C
|
|
#define C(a, b) TRACE_ITER_##a = (1 << TRACE_ITER_##a##_BIT)
|
|
|
|
enum trace_iterator_flags { TRACE_FLAGS };
|
|
|
|
/*
|
|
* TRACE_ITER_SYM_MASK masks the options in trace_flags that
|
|
* control the output of kernel symbols.
|
|
*/
|
|
#define TRACE_ITER_SYM_MASK \
|
|
(TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
|
|
|
|
extern struct tracer nop_trace;
|
|
|
|
#ifdef CONFIG_BRANCH_TRACER
|
|
extern int enable_branch_tracing(struct trace_array *tr);
|
|
extern void disable_branch_tracing(void);
|
|
static inline int trace_branch_enable(struct trace_array *tr)
|
|
{
|
|
if (tr->trace_flags & TRACE_ITER_BRANCH)
|
|
return enable_branch_tracing(tr);
|
|
return 0;
|
|
}
|
|
static inline void trace_branch_disable(void)
|
|
{
|
|
/* due to races, always disable */
|
|
disable_branch_tracing();
|
|
}
|
|
#else
|
|
static inline int trace_branch_enable(struct trace_array *tr)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void trace_branch_disable(void)
|
|
{
|
|
}
|
|
#endif /* CONFIG_BRANCH_TRACER */
|
|
|
|
/* set ring buffers to default size if not already done so */
|
|
int tracing_update_buffers(void);
|
|
|
|
struct ftrace_event_field {
|
|
struct list_head link;
|
|
const char *name;
|
|
const char *type;
|
|
int filter_type;
|
|
int offset;
|
|
int size;
|
|
int is_signed;
|
|
};
|
|
|
|
struct prog_entry;
|
|
|
|
struct event_filter {
|
|
struct prog_entry __rcu *prog;
|
|
char *filter_string;
|
|
};
|
|
|
|
struct event_subsystem {
|
|
struct list_head list;
|
|
const char *name;
|
|
struct event_filter *filter;
|
|
int ref_count;
|
|
};
|
|
|
|
struct trace_subsystem_dir {
|
|
struct list_head list;
|
|
struct event_subsystem *subsystem;
|
|
struct trace_array *tr;
|
|
struct dentry *entry;
|
|
int ref_count;
|
|
int nr_events;
|
|
};
|
|
|
|
extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event);
|
|
|
|
void trace_buffer_unlock_commit_regs(struct trace_array *tr,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
unsigned long flags, int pc,
|
|
struct pt_regs *regs);
|
|
|
|
static inline void trace_buffer_unlock_commit(struct trace_array *tr,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
unsigned long flags, int pc)
|
|
{
|
|
trace_buffer_unlock_commit_regs(tr, buffer, event, flags, pc, NULL);
|
|
}
|
|
|
|
DECLARE_PER_CPU(struct ring_buffer_event *, trace_buffered_event);
|
|
DECLARE_PER_CPU(int, trace_buffered_event_cnt);
|
|
void trace_buffered_event_disable(void);
|
|
void trace_buffered_event_enable(void);
|
|
|
|
static inline void
|
|
__trace_event_discard_commit(struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event)
|
|
{
|
|
if (this_cpu_read(trace_buffered_event) == event) {
|
|
/* Simply release the temp buffer */
|
|
this_cpu_dec(trace_buffered_event_cnt);
|
|
return;
|
|
}
|
|
ring_buffer_discard_commit(buffer, event);
|
|
}
|
|
|
|
/*
|
|
* Helper function for event_trigger_unlock_commit{_regs}().
|
|
* If there are event triggers attached to this event that requires
|
|
* filtering against its fields, then they wil be called as the
|
|
* entry already holds the field information of the current event.
|
|
*
|
|
* It also checks if the event should be discarded or not.
|
|
* It is to be discarded if the event is soft disabled and the
|
|
* event was only recorded to process triggers, or if the event
|
|
* filter is active and this event did not match the filters.
|
|
*
|
|
* Returns true if the event is discarded, false otherwise.
|
|
*/
|
|
static inline bool
|
|
__event_trigger_test_discard(struct trace_event_file *file,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
void *entry,
|
|
enum event_trigger_type *tt)
|
|
{
|
|
unsigned long eflags = file->flags;
|
|
|
|
if (eflags & EVENT_FILE_FL_TRIGGER_COND)
|
|
*tt = event_triggers_call(file, entry, event);
|
|
|
|
if (likely(!(file->flags & (EVENT_FILE_FL_SOFT_DISABLED |
|
|
EVENT_FILE_FL_FILTERED |
|
|
EVENT_FILE_FL_PID_FILTER))))
|
|
return false;
|
|
|
|
if (file->flags & EVENT_FILE_FL_SOFT_DISABLED)
|
|
goto discard;
|
|
|
|
if (file->flags & EVENT_FILE_FL_FILTERED &&
|
|
!filter_match_preds(file->filter, entry))
|
|
goto discard;
|
|
|
|
if ((file->flags & EVENT_FILE_FL_PID_FILTER) &&
|
|
trace_event_ignore_this_pid(file))
|
|
goto discard;
|
|
|
|
return false;
|
|
discard:
|
|
__trace_event_discard_commit(buffer, event);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* event_trigger_unlock_commit - handle triggers and finish event commit
|
|
* @file: The file pointer assoctiated to the event
|
|
* @buffer: The ring buffer that the event is being written to
|
|
* @event: The event meta data in the ring buffer
|
|
* @entry: The event itself
|
|
* @irq_flags: The state of the interrupts at the start of the event
|
|
* @pc: The state of the preempt count at the start of the event.
|
|
* @len: The length of the payload data required for stm logging.
|
|
*
|
|
* This is a helper function to handle triggers that require data
|
|
* from the event itself. It also tests the event against filters and
|
|
* if the event is soft disabled and should be discarded.
|
|
*/
|
|
#ifdef CONFIG_CORESIGHT_QGKI
|
|
static inline void
|
|
event_trigger_unlock_commit(struct trace_event_file *file,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
void *entry, unsigned long irq_flags, int pc,
|
|
unsigned long len)
|
|
{
|
|
enum event_trigger_type tt = ETT_NONE;
|
|
|
|
if (!__event_trigger_test_discard(file, buffer, event, entry, &tt)) {
|
|
if (len)
|
|
stm_log(OST_ENTITY_FTRACE_EVENTS, entry, len);
|
|
|
|
trace_buffer_unlock_commit(file->tr, buffer, event,
|
|
irq_flags, pc);
|
|
}
|
|
|
|
if (tt)
|
|
event_triggers_post_call(file, tt);
|
|
}
|
|
#else
|
|
static inline void
|
|
event_trigger_unlock_commit(struct trace_event_file *file,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
void *entry, unsigned long irq_flags, int pc)
|
|
{
|
|
enum event_trigger_type tt = ETT_NONE;
|
|
|
|
if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
|
|
trace_buffer_unlock_commit(file->tr, buffer, event, irq_flags, pc);
|
|
|
|
if (tt)
|
|
event_triggers_post_call(file, tt);
|
|
}
|
|
#endif
|
|
/**
|
|
* event_trigger_unlock_commit_regs - handle triggers and finish event commit
|
|
* @file: The file pointer assoctiated to the event
|
|
* @buffer: The ring buffer that the event is being written to
|
|
* @event: The event meta data in the ring buffer
|
|
* @entry: The event itself
|
|
* @irq_flags: The state of the interrupts at the start of the event
|
|
* @pc: The state of the preempt count at the start of the event.
|
|
*
|
|
* This is a helper function to handle triggers that require data
|
|
* from the event itself. It also tests the event against filters and
|
|
* if the event is soft disabled and should be discarded.
|
|
*
|
|
* Same as event_trigger_unlock_commit() but calls
|
|
* trace_buffer_unlock_commit_regs() instead of trace_buffer_unlock_commit().
|
|
*/
|
|
static inline void
|
|
event_trigger_unlock_commit_regs(struct trace_event_file *file,
|
|
struct ring_buffer *buffer,
|
|
struct ring_buffer_event *event,
|
|
void *entry, unsigned long irq_flags, int pc,
|
|
struct pt_regs *regs)
|
|
{
|
|
enum event_trigger_type tt = ETT_NONE;
|
|
|
|
if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
|
|
trace_buffer_unlock_commit_regs(file->tr, buffer, event,
|
|
irq_flags, pc, regs);
|
|
|
|
if (tt)
|
|
event_triggers_post_call(file, tt);
|
|
}
|
|
|
|
#define FILTER_PRED_INVALID ((unsigned short)-1)
|
|
#define FILTER_PRED_IS_RIGHT (1 << 15)
|
|
#define FILTER_PRED_FOLD (1 << 15)
|
|
|
|
/*
|
|
* The max preds is the size of unsigned short with
|
|
* two flags at the MSBs. One bit is used for both the IS_RIGHT
|
|
* and FOLD flags. The other is reserved.
|
|
*
|
|
* 2^14 preds is way more than enough.
|
|
*/
|
|
#define MAX_FILTER_PRED 16384
|
|
|
|
struct filter_pred;
|
|
struct regex;
|
|
|
|
typedef int (*filter_pred_fn_t) (struct filter_pred *pred, void *event);
|
|
|
|
typedef int (*regex_match_func)(char *str, struct regex *r, int len);
|
|
|
|
enum regex_type {
|
|
MATCH_FULL = 0,
|
|
MATCH_FRONT_ONLY,
|
|
MATCH_MIDDLE_ONLY,
|
|
MATCH_END_ONLY,
|
|
MATCH_GLOB,
|
|
MATCH_INDEX,
|
|
};
|
|
|
|
struct regex {
|
|
char pattern[MAX_FILTER_STR_VAL];
|
|
int len;
|
|
int field_len;
|
|
regex_match_func match;
|
|
};
|
|
|
|
struct filter_pred {
|
|
filter_pred_fn_t fn;
|
|
u64 val;
|
|
struct regex regex;
|
|
unsigned short *ops;
|
|
struct ftrace_event_field *field;
|
|
int offset;
|
|
int not;
|
|
int op;
|
|
};
|
|
|
|
static inline bool is_string_field(struct ftrace_event_field *field)
|
|
{
|
|
return field->filter_type == FILTER_DYN_STRING ||
|
|
field->filter_type == FILTER_STATIC_STRING ||
|
|
field->filter_type == FILTER_PTR_STRING ||
|
|
field->filter_type == FILTER_COMM;
|
|
}
|
|
|
|
static inline bool is_function_field(struct ftrace_event_field *field)
|
|
{
|
|
return field->filter_type == FILTER_TRACE_FN;
|
|
}
|
|
|
|
extern enum regex_type
|
|
filter_parse_regex(char *buff, int len, char **search, int *not);
|
|
extern void print_event_filter(struct trace_event_file *file,
|
|
struct trace_seq *s);
|
|
extern int apply_event_filter(struct trace_event_file *file,
|
|
char *filter_string);
|
|
extern int apply_subsystem_event_filter(struct trace_subsystem_dir *dir,
|
|
char *filter_string);
|
|
extern void print_subsystem_event_filter(struct event_subsystem *system,
|
|
struct trace_seq *s);
|
|
extern int filter_assign_type(const char *type);
|
|
extern int create_event_filter(struct trace_array *tr,
|
|
struct trace_event_call *call,
|
|
char *filter_str, bool set_str,
|
|
struct event_filter **filterp);
|
|
extern void free_event_filter(struct event_filter *filter);
|
|
|
|
struct ftrace_event_field *
|
|
trace_find_event_field(struct trace_event_call *call, char *name);
|
|
|
|
extern void trace_event_enable_cmd_record(bool enable);
|
|
extern void trace_event_enable_tgid_record(bool enable);
|
|
|
|
extern int event_trace_init(void);
|
|
extern int init_events(void);
|
|
extern int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr);
|
|
extern int event_trace_del_tracer(struct trace_array *tr);
|
|
|
|
extern struct trace_event_file *__find_event_file(struct trace_array *tr,
|
|
const char *system,
|
|
const char *event);
|
|
extern struct trace_event_file *find_event_file(struct trace_array *tr,
|
|
const char *system,
|
|
const char *event);
|
|
|
|
static inline void *event_file_data(struct file *filp)
|
|
{
|
|
return READ_ONCE(file_inode(filp)->i_private);
|
|
}
|
|
|
|
extern struct mutex event_mutex;
|
|
extern struct list_head ftrace_events;
|
|
|
|
extern const struct file_operations event_trigger_fops;
|
|
extern const struct file_operations event_hist_fops;
|
|
|
|
#ifdef CONFIG_HIST_TRIGGERS
|
|
extern int register_trigger_hist_cmd(void);
|
|
extern int register_trigger_hist_enable_disable_cmds(void);
|
|
#else
|
|
static inline int register_trigger_hist_cmd(void) { return 0; }
|
|
static inline int register_trigger_hist_enable_disable_cmds(void) { return 0; }
|
|
#endif
|
|
|
|
extern int register_trigger_cmds(void);
|
|
extern void clear_event_triggers(struct trace_array *tr);
|
|
|
|
struct event_trigger_data {
|
|
unsigned long count;
|
|
int ref;
|
|
struct event_trigger_ops *ops;
|
|
struct event_command *cmd_ops;
|
|
struct event_filter __rcu *filter;
|
|
char *filter_str;
|
|
void *private_data;
|
|
bool paused;
|
|
bool paused_tmp;
|
|
struct list_head list;
|
|
char *name;
|
|
struct list_head named_list;
|
|
struct event_trigger_data *named_data;
|
|
};
|
|
|
|
/* Avoid typos */
|
|
#define ENABLE_EVENT_STR "enable_event"
|
|
#define DISABLE_EVENT_STR "disable_event"
|
|
#define ENABLE_HIST_STR "enable_hist"
|
|
#define DISABLE_HIST_STR "disable_hist"
|
|
|
|
struct enable_trigger_data {
|
|
struct trace_event_file *file;
|
|
bool enable;
|
|
bool hist;
|
|
};
|
|
|
|
extern int event_enable_trigger_print(struct seq_file *m,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
extern void event_enable_trigger_free(struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
extern int event_enable_trigger_func(struct event_command *cmd_ops,
|
|
struct trace_event_file *file,
|
|
char *glob, char *cmd, char *param);
|
|
extern int event_enable_register_trigger(char *glob,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data,
|
|
struct trace_event_file *file);
|
|
extern void event_enable_unregister_trigger(char *glob,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *test,
|
|
struct trace_event_file *file);
|
|
extern void trigger_data_free(struct event_trigger_data *data);
|
|
extern int event_trigger_init(struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
extern int trace_event_trigger_enable_disable(struct trace_event_file *file,
|
|
int trigger_enable);
|
|
extern void update_cond_flag(struct trace_event_file *file);
|
|
extern int set_trigger_filter(char *filter_str,
|
|
struct event_trigger_data *trigger_data,
|
|
struct trace_event_file *file);
|
|
extern struct event_trigger_data *find_named_trigger(const char *name);
|
|
extern bool is_named_trigger(struct event_trigger_data *test);
|
|
extern int save_named_trigger(const char *name,
|
|
struct event_trigger_data *data);
|
|
extern void del_named_trigger(struct event_trigger_data *data);
|
|
extern void pause_named_trigger(struct event_trigger_data *data);
|
|
extern void unpause_named_trigger(struct event_trigger_data *data);
|
|
extern void set_named_trigger_data(struct event_trigger_data *data,
|
|
struct event_trigger_data *named_data);
|
|
extern struct event_trigger_data *
|
|
get_named_trigger_data(struct event_trigger_data *data);
|
|
extern int register_event_command(struct event_command *cmd);
|
|
extern int unregister_event_command(struct event_command *cmd);
|
|
extern int register_trigger_hist_enable_disable_cmds(void);
|
|
|
|
/**
|
|
* struct event_trigger_ops - callbacks for trace event triggers
|
|
*
|
|
* The methods in this structure provide per-event trigger hooks for
|
|
* various trigger operations.
|
|
*
|
|
* All the methods below, except for @init() and @free(), must be
|
|
* implemented.
|
|
*
|
|
* @func: The trigger 'probe' function called when the triggering
|
|
* event occurs. The data passed into this callback is the data
|
|
* that was supplied to the event_command @reg() function that
|
|
* registered the trigger (see struct event_command) along with
|
|
* the trace record, rec.
|
|
*
|
|
* @init: An optional initialization function called for the trigger
|
|
* when the trigger is registered (via the event_command reg()
|
|
* function). This can be used to perform per-trigger
|
|
* initialization such as incrementing a per-trigger reference
|
|
* count, for instance. This is usually implemented by the
|
|
* generic utility function @event_trigger_init() (see
|
|
* trace_event_triggers.c).
|
|
*
|
|
* @free: An optional de-initialization function called for the
|
|
* trigger when the trigger is unregistered (via the
|
|
* event_command @reg() function). This can be used to perform
|
|
* per-trigger de-initialization such as decrementing a
|
|
* per-trigger reference count and freeing corresponding trigger
|
|
* data, for instance. This is usually implemented by the
|
|
* generic utility function @event_trigger_free() (see
|
|
* trace_event_triggers.c).
|
|
*
|
|
* @print: The callback function invoked to have the trigger print
|
|
* itself. This is usually implemented by a wrapper function
|
|
* that calls the generic utility function @event_trigger_print()
|
|
* (see trace_event_triggers.c).
|
|
*/
|
|
struct event_trigger_ops {
|
|
void (*func)(struct event_trigger_data *data,
|
|
void *rec,
|
|
struct ring_buffer_event *rbe);
|
|
int (*init)(struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
void (*free)(struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
int (*print)(struct seq_file *m,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data);
|
|
};
|
|
|
|
/**
|
|
* struct event_command - callbacks and data members for event commands
|
|
*
|
|
* Event commands are invoked by users by writing the command name
|
|
* into the 'trigger' file associated with a trace event. The
|
|
* parameters associated with a specific invocation of an event
|
|
* command are used to create an event trigger instance, which is
|
|
* added to the list of trigger instances associated with that trace
|
|
* event. When the event is hit, the set of triggers associated with
|
|
* that event is invoked.
|
|
*
|
|
* The data members in this structure provide per-event command data
|
|
* for various event commands.
|
|
*
|
|
* All the data members below, except for @post_trigger, must be set
|
|
* for each event command.
|
|
*
|
|
* @name: The unique name that identifies the event command. This is
|
|
* the name used when setting triggers via trigger files.
|
|
*
|
|
* @trigger_type: A unique id that identifies the event command
|
|
* 'type'. This value has two purposes, the first to ensure that
|
|
* only one trigger of the same type can be set at a given time
|
|
* for a particular event e.g. it doesn't make sense to have both
|
|
* a traceon and traceoff trigger attached to a single event at
|
|
* the same time, so traceon and traceoff have the same type
|
|
* though they have different names. The @trigger_type value is
|
|
* also used as a bit value for deferring the actual trigger
|
|
* action until after the current event is finished. Some
|
|
* commands need to do this if they themselves log to the trace
|
|
* buffer (see the @post_trigger() member below). @trigger_type
|
|
* values are defined by adding new values to the trigger_type
|
|
* enum in include/linux/trace_events.h.
|
|
*
|
|
* @flags: See the enum event_command_flags below.
|
|
*
|
|
* All the methods below, except for @set_filter() and @unreg_all(),
|
|
* must be implemented.
|
|
*
|
|
* @func: The callback function responsible for parsing and
|
|
* registering the trigger written to the 'trigger' file by the
|
|
* user. It allocates the trigger instance and registers it with
|
|
* the appropriate trace event. It makes use of the other
|
|
* event_command callback functions to orchestrate this, and is
|
|
* usually implemented by the generic utility function
|
|
* @event_trigger_callback() (see trace_event_triggers.c).
|
|
*
|
|
* @reg: Adds the trigger to the list of triggers associated with the
|
|
* event, and enables the event trigger itself, after
|
|
* initializing it (via the event_trigger_ops @init() function).
|
|
* This is also where commands can use the @trigger_type value to
|
|
* make the decision as to whether or not multiple instances of
|
|
* the trigger should be allowed. This is usually implemented by
|
|
* the generic utility function @register_trigger() (see
|
|
* trace_event_triggers.c).
|
|
*
|
|
* @unreg: Removes the trigger from the list of triggers associated
|
|
* with the event, and disables the event trigger itself, after
|
|
* initializing it (via the event_trigger_ops @free() function).
|
|
* This is usually implemented by the generic utility function
|
|
* @unregister_trigger() (see trace_event_triggers.c).
|
|
*
|
|
* @unreg_all: An optional function called to remove all the triggers
|
|
* from the list of triggers associated with the event. Called
|
|
* when a trigger file is opened in truncate mode.
|
|
*
|
|
* @set_filter: An optional function called to parse and set a filter
|
|
* for the trigger. If no @set_filter() method is set for the
|
|
* event command, filters set by the user for the command will be
|
|
* ignored. This is usually implemented by the generic utility
|
|
* function @set_trigger_filter() (see trace_event_triggers.c).
|
|
*
|
|
* @get_trigger_ops: The callback function invoked to retrieve the
|
|
* event_trigger_ops implementation associated with the command.
|
|
*/
|
|
struct event_command {
|
|
struct list_head list;
|
|
char *name;
|
|
enum event_trigger_type trigger_type;
|
|
int flags;
|
|
int (*func)(struct event_command *cmd_ops,
|
|
struct trace_event_file *file,
|
|
char *glob, char *cmd, char *params);
|
|
int (*reg)(char *glob,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data,
|
|
struct trace_event_file *file);
|
|
void (*unreg)(char *glob,
|
|
struct event_trigger_ops *ops,
|
|
struct event_trigger_data *data,
|
|
struct trace_event_file *file);
|
|
void (*unreg_all)(struct trace_event_file *file);
|
|
int (*set_filter)(char *filter_str,
|
|
struct event_trigger_data *data,
|
|
struct trace_event_file *file);
|
|
struct event_trigger_ops *(*get_trigger_ops)(char *cmd, char *param);
|
|
};
|
|
|
|
/**
|
|
* enum event_command_flags - flags for struct event_command
|
|
*
|
|
* @POST_TRIGGER: A flag that says whether or not this command needs
|
|
* to have its action delayed until after the current event has
|
|
* been closed. Some triggers need to avoid being invoked while
|
|
* an event is currently in the process of being logged, since
|
|
* the trigger may itself log data into the trace buffer. Thus
|
|
* we make sure the current event is committed before invoking
|
|
* those triggers. To do that, the trigger invocation is split
|
|
* in two - the first part checks the filter using the current
|
|
* trace record; if a command has the @post_trigger flag set, it
|
|
* sets a bit for itself in the return value, otherwise it
|
|
* directly invokes the trigger. Once all commands have been
|
|
* either invoked or set their return flag, the current record is
|
|
* either committed or discarded. At that point, if any commands
|
|
* have deferred their triggers, those commands are finally
|
|
* invoked following the close of the current event. In other
|
|
* words, if the event_trigger_ops @func() probe implementation
|
|
* itself logs to the trace buffer, this flag should be set,
|
|
* otherwise it can be left unspecified.
|
|
*
|
|
* @NEEDS_REC: A flag that says whether or not this command needs
|
|
* access to the trace record in order to perform its function,
|
|
* regardless of whether or not it has a filter associated with
|
|
* it (filters make a trigger require access to the trace record
|
|
* but are not always present).
|
|
*/
|
|
enum event_command_flags {
|
|
EVENT_CMD_FL_POST_TRIGGER = 1,
|
|
EVENT_CMD_FL_NEEDS_REC = 2,
|
|
};
|
|
|
|
static inline bool event_command_post_trigger(struct event_command *cmd_ops)
|
|
{
|
|
return cmd_ops->flags & EVENT_CMD_FL_POST_TRIGGER;
|
|
}
|
|
|
|
static inline bool event_command_needs_rec(struct event_command *cmd_ops)
|
|
{
|
|
return cmd_ops->flags & EVENT_CMD_FL_NEEDS_REC;
|
|
}
|
|
|
|
extern int trace_event_enable_disable(struct trace_event_file *file,
|
|
int enable, int soft_disable);
|
|
extern int tracing_alloc_snapshot(void);
|
|
extern void tracing_snapshot_cond(struct trace_array *tr, void *cond_data);
|
|
extern int tracing_snapshot_cond_enable(struct trace_array *tr, void *cond_data, cond_update_fn_t update);
|
|
|
|
extern int tracing_snapshot_cond_disable(struct trace_array *tr);
|
|
extern void *tracing_cond_snapshot_data(struct trace_array *tr);
|
|
|
|
extern const char *__start___trace_bprintk_fmt[];
|
|
extern const char *__stop___trace_bprintk_fmt[];
|
|
|
|
extern const char *__start___tracepoint_str[];
|
|
extern const char *__stop___tracepoint_str[];
|
|
|
|
void trace_printk_control(bool enabled);
|
|
void trace_printk_init_buffers(void);
|
|
void trace_printk_start_comm(void);
|
|
int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set);
|
|
int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled);
|
|
|
|
#define MAX_EVENT_NAME_LEN 64
|
|
|
|
extern int trace_run_command(const char *buf, int (*createfn)(int, char**));
|
|
extern ssize_t trace_parse_run_command(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos,
|
|
int (*createfn)(int, char**));
|
|
|
|
extern unsigned int err_pos(char *cmd, const char *str);
|
|
extern void tracing_log_err(struct trace_array *tr,
|
|
const char *loc, const char *cmd,
|
|
const char **errs, u8 type, u8 pos);
|
|
|
|
/*
|
|
* Normal trace_printk() and friends allocates special buffers
|
|
* to do the manipulation, as well as saves the print formats
|
|
* into sections to display. But the trace infrastructure wants
|
|
* to use these without the added overhead at the price of being
|
|
* a bit slower (used mainly for warnings, where we don't care
|
|
* about performance). The internal_trace_puts() is for such
|
|
* a purpose.
|
|
*/
|
|
#define internal_trace_puts(str) __trace_puts(_THIS_IP_, str, strlen(str))
|
|
|
|
#undef FTRACE_ENTRY
|
|
#define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter) \
|
|
extern struct trace_event_call \
|
|
__aligned(4) event_##call;
|
|
#undef FTRACE_ENTRY_DUP
|
|
#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print, filter) \
|
|
FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print), \
|
|
filter)
|
|
#undef FTRACE_ENTRY_PACKED
|
|
#define FTRACE_ENTRY_PACKED(call, struct_name, id, tstruct, print, filter) \
|
|
FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print), \
|
|
filter)
|
|
|
|
#include "trace_entries.h"
|
|
|
|
#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_FUNCTION_TRACER)
|
|
int perf_ftrace_event_register(struct trace_event_call *call,
|
|
enum trace_reg type, void *data);
|
|
#else
|
|
#define perf_ftrace_event_register NULL
|
|
#endif
|
|
|
|
#ifdef CONFIG_FTRACE_SYSCALLS
|
|
void init_ftrace_syscalls(void);
|
|
const char *get_syscall_name(int syscall);
|
|
#else
|
|
static inline void init_ftrace_syscalls(void) { }
|
|
static inline const char *get_syscall_name(int syscall)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_EVENT_TRACING
|
|
void trace_event_init(void);
|
|
void trace_event_eval_update(struct trace_eval_map **map, int len);
|
|
#else
|
|
static inline void __init trace_event_init(void) { }
|
|
static inline void trace_event_eval_update(struct trace_eval_map **map, int len) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACER_SNAPSHOT
|
|
void tracing_snapshot_instance(struct trace_array *tr);
|
|
int tracing_alloc_snapshot_instance(struct trace_array *tr);
|
|
#else
|
|
static inline void tracing_snapshot_instance(struct trace_array *tr) { }
|
|
static inline int tracing_alloc_snapshot_instance(struct trace_array *tr)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PREEMPT_TRACER
|
|
void tracer_preempt_on(unsigned long a0, unsigned long a1);
|
|
void tracer_preempt_off(unsigned long a0, unsigned long a1);
|
|
#else
|
|
static inline void tracer_preempt_on(unsigned long a0, unsigned long a1) { }
|
|
static inline void tracer_preempt_off(unsigned long a0, unsigned long a1) { }
|
|
#endif
|
|
#ifdef CONFIG_IRQSOFF_TRACER
|
|
void tracer_hardirqs_on(unsigned long a0, unsigned long a1);
|
|
void tracer_hardirqs_off(unsigned long a0, unsigned long a1);
|
|
#else
|
|
static inline void tracer_hardirqs_on(unsigned long a0, unsigned long a1) { }
|
|
static inline void tracer_hardirqs_off(unsigned long a0, unsigned long a1) { }
|
|
#endif
|
|
|
|
extern struct trace_iterator *tracepoint_print_iter;
|
|
|
|
/*
|
|
* Reset the state of the trace_iterator so that it can read consumed data.
|
|
* Normally, the trace_iterator is used for reading the data when it is not
|
|
* consumed, and must retain state.
|
|
*/
|
|
static __always_inline void trace_iterator_reset(struct trace_iterator *iter)
|
|
{
|
|
const size_t offset = offsetof(struct trace_iterator, seq);
|
|
|
|
/*
|
|
* Keep gcc from complaining about overwriting more than just one
|
|
* member in the structure.
|
|
*/
|
|
memset((char *)iter + offset, 0, sizeof(struct trace_iterator) - offset);
|
|
|
|
iter->pos = -1;
|
|
}
|
|
|
|
#endif /* _LINUX_KERNEL_TRACE_H */
|