https://source.android.com/docs/security/bulletin/2024-06-01 CVE-2024-26926 * tag 'ASB-2024-06-05_4.19-stable' of https://android.googlesource.com/kernel/common: BACKPORT: net: fix __dst_negative_advice() race Linux 4.19.315 docs: kernel_include.py: Cope with docutils 0.21 serial: kgdboc: Fix NMI-safety problems from keyboard reset code tracing: Remove unnecessary var_ref destroy in track_data_destroy() tracing: Generalize hist trigger onmax and save action tracing: Split up onmatch action data tracing: Refactor hist trigger action code tracing: Have the historgram use the result of str_has_prefix() for len of prefix tracing: Use str_has_prefix() instead of using fixed sizes tracing: Use str_has_prefix() helper for histogram code string.h: Add str_has_prefix() helper function tracing: Consolidate trace_add/remove_event_call back to the nolock functions tracing: Remove unneeded synth_event_mutex tracing: Use dyn_event framework for synthetic events tracing: Add unified dynamic event framework tracing: Simplify creation and deletion of synthetic events btrfs: add missing mutex_unlock in btrfs_relocate_sys_chunks() dm: limit the number of targets and parameter size area Revert "selftests: mm: fix map_hugetlb failure on 64K page size systems" Linux 4.19.314 af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc(). net: fix out-of-bounds access in ops_init drm/vmwgfx: Fix invalid reads in fence signaled events dyndbg: fix old BUG_ON in >control parser tipc: fix UAF in error path usb: gadget: f_fs: Fix a race condition when processing setup packets. usb: gadget: composite: fix OS descriptors w_value logic firewire: nosy: ensure user_length is taken into account when fetching packet contents af_unix: Fix garbage collector racing against connect() af_unix: Do not use atomic ops for unix_sk(sk)->inflight. ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action() net: bridge: fix corrupted ethernet header on multicast-to-unicast phonet: fix rtm_phonet_notify() skb allocation rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets tcp: remove redundant check on tskb net:usb:qmi_wwan: support Rolling modules fs/9p: drop inodes immediately on non-.L too gpio: crystalcove: Use -ENOTSUPP consistently gpio: wcove: Use -ENOTSUPP consistently 9p: explicitly deny setlease attempts fs/9p: translate O_TRUNC into OTRUNC fs/9p: only translate RWX permissions for plain 9P2000 selftests: timers: Fix valid-adjtimex signed left-shift undefined behavior scsi: target: Fix SELinux error when systemd-modules loads the target module btrfs: always clear PERTRANS metadata during commit btrfs: make btrfs_clear_delalloc_extent() free delalloc reserve tools/power turbostat: Fix Bzy_MHz documentation typo tools/power turbostat: Fix added raw MSR output firewire: ohci: mask bus reset interrupts between ISR and bottom half ata: sata_gemini: Check clk_enable() result net: bcmgenet: Reset RBUF on first open ALSA: line6: Zero-initialize message buffers scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload net: mark racy access on sk->sk_rcvbuf wifi: mac80211: fix ieee80211_bss_*_flags kernel-doc gfs2: Fix invalid metadata access in punch_hole scsi: lpfc: Update lpfc_ramp_down_queue_handler() logic tipc: fix a possible memleak in tipc_buf_append net: bridge: fix multicast-to-unicast with fraglist GSO net: dsa: mv88e6xxx: Fix number of databases for 88E6141 / 88E6341 net: dsa: mv88e6xxx: Add number of MACs in the ATU net l2tp: drop flow hash on forward nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). bna: ensure the copied buf is NUL terminated s390/mm: Fix clearing storage keys for huge pages s390/mm: Fix storage key clearing for guest huge pages pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map() power: rt9455: hide unused rt9455_boost_voltage_values pinctrl: core: delete incorrect free in pinctrl_enable() ethernet: Add helper for assigning packet type when dest address does not match device address ethernet: add a helper for assigning port addresses net: slightly optimize eth_type_trans drm/amdgpu: Fix leak when GPU memory allocation fails drm/amdkfd: change system memory overcommit limit wifi: nl80211: don't free NULL coalescing rule dmaengine: Revert "dmaengine: pl330: issue_pending waits until WFP state" dmaengine: pl330: issue_pending waits until WFP state Linux 4.19.313 serial: core: fix kernel-doc for uart_port_unlock_irqrestore() udp: preserve the connected status if only UDP cmsg Revert "y2038: rusage: use __kernel_old_timeval" Revert "loop: Remove sector_t truncation checks" HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up i2c: smbus: fix NULL function pointer dereference idma64: Don't try to serve interrupts when device is powered off dmaengine: owl: fix register access functions tcp: Fix NEW_SYN_RECV handling in inet_twsk_purge() tcp: Clean up kernel listener's reqsk in inet_twsk_purge() mtd: diskonchip: work around ubsan link failure stackdepot: respect __GFP_NOLOCKDEP allocation flag net: b44: set pause params only when interface is up irqchip/gic-v3-its: Prevent double free on error arm64: dts: rockchip: enable internal pull-up for Q7_THRM# on RK3399 Puma btrfs: fix information leak in btrfs_ioctl_logical_to_ino() Bluetooth: Fix type of len in {l2cap,sco}_sock_getsockopt_old() tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together tracing: Show size of requested perf buffer Revert "crypto: api - Disallow identical driver names" drm/amdgpu: validate the parameters of bo mapping operations more clearly amdgpu: validate offset_in_bo of drm_amdgpu_gem_va drm/amdgpu: restrict bo mapping within gpu address limits serial: mxs-auart: add spinlock around changing cts state serial: core: Provide port lock wrappers i40e: Do not use WQ_MEM_RECLAIM flag for workqueue net: openvswitch: Fix Use-After-Free in ovs_ct_exit net: openvswitch: ovs_ct_exit to be done under ovs_lock ipvs: Fix checksumming on GSO of SCTP packets net: gtp: Fix Use-After-Free in gtp_dellink net: usb: ax88179_178a: stop lying about skb->truesize NFC: trf7970a: disable all regulators on removal mlxsw: core: Unregister EMAD trap using FORWARD action vxlan: drop packets from invalid src-address ARC: [plat-hsdk]: Remove misplaced interrupt-cells property arm64: dts: mediatek: mt7622: drop "reset-names" from thermal block arm64: dts: mediatek: mt7622: fix ethernet controller "compatible" arm64: dts: mediatek: mt7622: fix IR nodename arm64: dts: rockchip: enable internal pull-up on PCIE_WAKE# for RK3399 Puma arm64: dts: rockchip: fix alphabetical ordering RK3399 puma tracing: Use var_refs[] for hist trigger reference checking tracing: Remove hist trigger synth_var_refs nilfs2: fix OOB in nilfs_set_de_type nouveau: fix instmem race condition around ptr stores fs: sysfs: Fix reference leak in sysfs_break_active_protection() speakup: Avoid crash on very long word usb: dwc2: host: Fix dereference issue in DDMA completion flow. Revert "usb: cdc-wdm: close race between read and workqueue" USB: serial: option: add Telit FN920C04 rmnet compositions USB: serial: option: add Rolling RW101-GL and RW135-GL support USB: serial: option: support Quectel EM060K sub-models USB: serial: option: add Lonsung U8300/U9300 product USB: serial: option: add support for Fibocom FM650/FG650 USB: serial: option: add Fibocom FM135-GL variants serial/pmac_zilog: Remove flawed mitigation for rx irq flood comedi: vmk80xx: fix incomplete endpoint checking drm: nv04: Fix out of bounds access RDMA/mlx5: Fix port number for counter query in multi-port configuration tun: limit printing rate when illegal packet received by tun dev netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() netfilter: nf_tables: __nft_expr_type_get() selects specific family type Revert "tracing/trigger: Fix to return error if failed to alloc snapshot" kprobes: Fix possible use-after-free issue on kprobe registration selftests/ftrace: Limit length in subsystem-enable tests btrfs: record delayed inode root in transaction x86/apic: Force native_apic_mem_read() to use the MOV instruction selftests: timers: Fix abs() warning in posix_timers test vhost: Add smp_rmb() in vhost_vq_avail_empty() tracing: hide unused ftrace_event_id_fops net/mlx5: Properly link new fs rules into the tree ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr ipv4/route: avoid unused-but-set-variable warning ipv6: fib: hide unused 'pn' variable geneve: fix header validation in geneve[6]_xmit_skb nouveau: fix function cast warning Bluetooth: Fix memory leak in hci_req_sync_complete() batman-adv: Avoid infinite loop trying to resize local TT Conflicts: drivers/net/usb/ax88179_178a.c Change-Id: I73f07cafe3403d98dad2e4a8b34f89cfbd49818c
636 lines
20 KiB
C
636 lines
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_TRACE_EVENT_H
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#define _LINUX_TRACE_EVENT_H
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#include <linux/ring_buffer.h>
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#include <linux/trace_seq.h>
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#include <linux/percpu.h>
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#include <linux/hardirq.h>
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#include <linux/perf_event.h>
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#include <linux/tracepoint.h>
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#include <linux/coresight-stm.h>
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struct trace_array;
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struct trace_buffer;
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struct tracer;
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struct dentry;
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struct bpf_prog;
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const char *trace_print_flags_seq(struct trace_seq *p, const char *delim,
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unsigned long flags,
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const struct trace_print_flags *flag_array);
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const char *trace_print_symbols_seq(struct trace_seq *p, unsigned long val,
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const struct trace_print_flags *symbol_array);
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#if BITS_PER_LONG == 32
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const char *trace_print_flags_seq_u64(struct trace_seq *p, const char *delim,
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unsigned long long flags,
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const struct trace_print_flags_u64 *flag_array);
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const char *trace_print_symbols_seq_u64(struct trace_seq *p,
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unsigned long long val,
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const struct trace_print_flags_u64
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*symbol_array);
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#endif
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const char *trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr,
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unsigned int bitmask_size);
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const char *trace_print_hex_seq(struct trace_seq *p,
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const unsigned char *buf, int len,
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bool concatenate);
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const char *trace_print_array_seq(struct trace_seq *p,
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const void *buf, int count,
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size_t el_size);
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struct trace_iterator;
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struct trace_event;
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int trace_raw_output_prep(struct trace_iterator *iter,
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struct trace_event *event);
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/*
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* The trace entry - the most basic unit of tracing. This is what
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* is printed in the end as a single line in the trace output, such as:
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*
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* bash-15816 [01] 235.197585: idle_cpu <- irq_enter
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*/
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struct trace_entry {
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unsigned short type;
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unsigned char flags;
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unsigned char preempt_count;
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int pid;
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};
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#define TRACE_EVENT_TYPE_MAX \
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((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)
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/*
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* Trace iterator - used by printout routines who present trace
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* results to users and which routines might sleep, etc:
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*/
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struct trace_iterator {
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struct trace_array *tr;
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struct tracer *trace;
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struct trace_buffer *trace_buffer;
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void *private;
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int cpu_file;
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struct mutex mutex;
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struct ring_buffer_iter **buffer_iter;
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unsigned long iter_flags;
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/* trace_seq for __print_flags() and __print_symbolic() etc. */
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struct trace_seq tmp_seq;
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cpumask_var_t started;
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/* it's true when current open file is snapshot */
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bool snapshot;
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/* The below is zeroed out in pipe_read */
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struct trace_seq seq;
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struct trace_entry *ent;
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unsigned long lost_events;
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int leftover;
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int ent_size;
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int cpu;
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u64 ts;
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loff_t pos;
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long idx;
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/* All new field here will be zeroed out in pipe_read */
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};
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enum trace_iter_flags {
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TRACE_FILE_LAT_FMT = 1,
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TRACE_FILE_ANNOTATE = 2,
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TRACE_FILE_TIME_IN_NS = 4,
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};
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typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
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int flags, struct trace_event *event);
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struct trace_event_functions {
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trace_print_func trace;
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trace_print_func raw;
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trace_print_func hex;
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trace_print_func binary;
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};
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struct trace_event {
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struct hlist_node node;
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struct list_head list;
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int type;
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struct trace_event_functions *funcs;
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};
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extern int register_trace_event(struct trace_event *event);
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extern int unregister_trace_event(struct trace_event *event);
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/* Return values for print_line callback */
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enum print_line_t {
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TRACE_TYPE_PARTIAL_LINE = 0, /* Retry after flushing the seq */
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TRACE_TYPE_HANDLED = 1,
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TRACE_TYPE_UNHANDLED = 2, /* Relay to other output functions */
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TRACE_TYPE_NO_CONSUME = 3 /* Handled but ask to not consume */
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};
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enum print_line_t trace_handle_return(struct trace_seq *s);
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void tracing_generic_entry_update(struct trace_entry *entry,
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unsigned long flags,
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int pc);
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struct trace_event_file;
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struct ring_buffer_event *
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trace_event_buffer_lock_reserve(struct ring_buffer **current_buffer,
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struct trace_event_file *trace_file,
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int type, unsigned long len,
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unsigned long flags, int pc);
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#define TRACE_RECORD_CMDLINE BIT(0)
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#define TRACE_RECORD_TGID BIT(1)
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void tracing_record_taskinfo(struct task_struct *task, int flags);
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void tracing_record_taskinfo_sched_switch(struct task_struct *prev,
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struct task_struct *next, int flags);
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void tracing_record_cmdline(struct task_struct *task);
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void tracing_record_tgid(struct task_struct *task);
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int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...);
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struct event_filter;
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enum trace_reg {
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TRACE_REG_REGISTER,
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TRACE_REG_UNREGISTER,
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#ifdef CONFIG_PERF_EVENTS
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TRACE_REG_PERF_REGISTER,
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TRACE_REG_PERF_UNREGISTER,
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TRACE_REG_PERF_OPEN,
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TRACE_REG_PERF_CLOSE,
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/*
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* These (ADD/DEL) use a 'boolean' return value, where 1 (true) means a
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* custom action was taken and the default action is not to be
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* performed.
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*/
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TRACE_REG_PERF_ADD,
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TRACE_REG_PERF_DEL,
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#endif
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};
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struct trace_event_call;
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struct trace_event_class {
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const char *system;
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void *probe;
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#ifdef CONFIG_PERF_EVENTS
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void *perf_probe;
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#endif
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int (*reg)(struct trace_event_call *event,
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enum trace_reg type, void *data);
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int (*define_fields)(struct trace_event_call *);
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struct list_head *(*get_fields)(struct trace_event_call *);
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struct list_head fields;
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int (*raw_init)(struct trace_event_call *);
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};
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extern int trace_event_reg(struct trace_event_call *event,
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enum trace_reg type, void *data);
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struct trace_event_buffer {
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struct ring_buffer *buffer;
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struct ring_buffer_event *event;
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struct trace_event_file *trace_file;
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void *entry;
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unsigned long flags;
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int pc;
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};
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void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer,
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struct trace_event_file *trace_file,
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unsigned long len);
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void trace_event_buffer_commit(struct trace_event_buffer *fbuffer,
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unsigned long len);
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enum {
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TRACE_EVENT_FL_FILTERED_BIT,
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TRACE_EVENT_FL_CAP_ANY_BIT,
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TRACE_EVENT_FL_NO_SET_FILTER_BIT,
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TRACE_EVENT_FL_IGNORE_ENABLE_BIT,
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TRACE_EVENT_FL_TRACEPOINT_BIT,
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TRACE_EVENT_FL_KPROBE_BIT,
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TRACE_EVENT_FL_UPROBE_BIT,
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};
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/*
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* Event flags:
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* FILTERED - The event has a filter attached
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* CAP_ANY - Any user can enable for perf
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* NO_SET_FILTER - Set when filter has error and is to be ignored
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* IGNORE_ENABLE - For trace internal events, do not enable with debugfs file
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* TRACEPOINT - Event is a tracepoint
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* KPROBE - Event is a kprobe
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* UPROBE - Event is a uprobe
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*/
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enum {
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TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT),
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TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT),
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TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT),
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TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT),
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TRACE_EVENT_FL_TRACEPOINT = (1 << TRACE_EVENT_FL_TRACEPOINT_BIT),
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TRACE_EVENT_FL_KPROBE = (1 << TRACE_EVENT_FL_KPROBE_BIT),
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TRACE_EVENT_FL_UPROBE = (1 << TRACE_EVENT_FL_UPROBE_BIT),
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};
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#define TRACE_EVENT_FL_UKPROBE (TRACE_EVENT_FL_KPROBE | TRACE_EVENT_FL_UPROBE)
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struct trace_event_call {
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struct list_head list;
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struct trace_event_class *class;
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union {
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char *name;
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/* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */
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struct tracepoint *tp;
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};
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struct trace_event event;
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char *print_fmt;
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struct event_filter *filter;
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void *mod;
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void *data;
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/*
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* bit 0: filter_active
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* bit 1: allow trace by non root (cap any)
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* bit 2: failed to apply filter
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* bit 3: trace internal event (do not enable)
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* bit 4: Event was enabled by module
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* bit 5: use call filter rather than file filter
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* bit 6: Event is a tracepoint
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*/
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int flags; /* static flags of different events */
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#ifdef CONFIG_PERF_EVENTS
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int perf_refcount;
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struct hlist_head __percpu *perf_events;
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struct bpf_prog_array __rcu *prog_array;
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int (*perf_perm)(struct trace_event_call *,
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struct perf_event *);
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#endif
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};
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#ifdef CONFIG_PERF_EVENTS
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static inline bool bpf_prog_array_valid(struct trace_event_call *call)
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{
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/*
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* This inline function checks whether call->prog_array
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* is valid or not. The function is called in various places,
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* outside rcu_read_lock/unlock, as a heuristic to speed up execution.
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*
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* If this function returns true, and later call->prog_array
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* becomes false inside rcu_read_lock/unlock region,
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* we bail out then. If this function return false,
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* there is a risk that we might miss a few events if the checking
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* were delayed until inside rcu_read_lock/unlock region and
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* call->prog_array happened to become non-NULL then.
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*
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* Here, READ_ONCE() is used instead of rcu_access_pointer().
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* rcu_access_pointer() requires the actual definition of
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* "struct bpf_prog_array" while READ_ONCE() only needs
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* a declaration of the same type.
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*/
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return !!READ_ONCE(call->prog_array);
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}
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#endif
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static inline const char *
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trace_event_name(struct trace_event_call *call)
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{
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if (call->flags & TRACE_EVENT_FL_TRACEPOINT)
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return call->tp ? call->tp->name : NULL;
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else
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return call->name;
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}
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struct trace_array;
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struct trace_subsystem_dir;
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enum {
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EVENT_FILE_FL_ENABLED_BIT,
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EVENT_FILE_FL_RECORDED_CMD_BIT,
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EVENT_FILE_FL_RECORDED_TGID_BIT,
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EVENT_FILE_FL_FILTERED_BIT,
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EVENT_FILE_FL_NO_SET_FILTER_BIT,
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EVENT_FILE_FL_SOFT_MODE_BIT,
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EVENT_FILE_FL_SOFT_DISABLED_BIT,
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EVENT_FILE_FL_TRIGGER_MODE_BIT,
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EVENT_FILE_FL_TRIGGER_COND_BIT,
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EVENT_FILE_FL_PID_FILTER_BIT,
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EVENT_FILE_FL_WAS_ENABLED_BIT,
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};
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/*
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* Event file flags:
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* ENABLED - The event is enabled
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* RECORDED_CMD - The comms should be recorded at sched_switch
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* RECORDED_TGID - The tgids should be recorded at sched_switch
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* FILTERED - The event has a filter attached
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* NO_SET_FILTER - Set when filter has error and is to be ignored
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* SOFT_MODE - The event is enabled/disabled by SOFT_DISABLED
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* SOFT_DISABLED - When set, do not trace the event (even though its
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* tracepoint may be enabled)
|
|
* TRIGGER_MODE - When set, invoke the triggers associated with the event
|
|
* TRIGGER_COND - When set, one or more triggers has an associated filter
|
|
* PID_FILTER - When set, the event is filtered based on pid
|
|
* WAS_ENABLED - Set when enabled to know to clear trace on module removal
|
|
*/
|
|
enum {
|
|
EVENT_FILE_FL_ENABLED = (1 << EVENT_FILE_FL_ENABLED_BIT),
|
|
EVENT_FILE_FL_RECORDED_CMD = (1 << EVENT_FILE_FL_RECORDED_CMD_BIT),
|
|
EVENT_FILE_FL_RECORDED_TGID = (1 << EVENT_FILE_FL_RECORDED_TGID_BIT),
|
|
EVENT_FILE_FL_FILTERED = (1 << EVENT_FILE_FL_FILTERED_BIT),
|
|
EVENT_FILE_FL_NO_SET_FILTER = (1 << EVENT_FILE_FL_NO_SET_FILTER_BIT),
|
|
EVENT_FILE_FL_SOFT_MODE = (1 << EVENT_FILE_FL_SOFT_MODE_BIT),
|
|
EVENT_FILE_FL_SOFT_DISABLED = (1 << EVENT_FILE_FL_SOFT_DISABLED_BIT),
|
|
EVENT_FILE_FL_TRIGGER_MODE = (1 << EVENT_FILE_FL_TRIGGER_MODE_BIT),
|
|
EVENT_FILE_FL_TRIGGER_COND = (1 << EVENT_FILE_FL_TRIGGER_COND_BIT),
|
|
EVENT_FILE_FL_PID_FILTER = (1 << EVENT_FILE_FL_PID_FILTER_BIT),
|
|
EVENT_FILE_FL_WAS_ENABLED = (1 << EVENT_FILE_FL_WAS_ENABLED_BIT),
|
|
};
|
|
|
|
struct trace_event_file {
|
|
struct list_head list;
|
|
struct trace_event_call *event_call;
|
|
struct event_filter __rcu *filter;
|
|
struct dentry *dir;
|
|
struct trace_array *tr;
|
|
struct trace_subsystem_dir *system;
|
|
struct list_head triggers;
|
|
|
|
/*
|
|
* 32 bit flags:
|
|
* bit 0: enabled
|
|
* bit 1: enabled cmd record
|
|
* bit 2: enable/disable with the soft disable bit
|
|
* bit 3: soft disabled
|
|
* bit 4: trigger enabled
|
|
*
|
|
* Note: The bits must be set atomically to prevent races
|
|
* from other writers. Reads of flags do not need to be in
|
|
* sync as they occur in critical sections. But the way flags
|
|
* is currently used, these changes do not affect the code
|
|
* except that when a change is made, it may have a slight
|
|
* delay in propagating the changes to other CPUs due to
|
|
* caching and such. Which is mostly OK ;-)
|
|
*/
|
|
unsigned long flags;
|
|
atomic_t sm_ref; /* soft-mode reference counter */
|
|
atomic_t tm_ref; /* trigger-mode reference counter */
|
|
};
|
|
|
|
#define __TRACE_EVENT_FLAGS(name, value) \
|
|
static int __init trace_init_flags_##name(void) \
|
|
{ \
|
|
event_##name.flags |= value; \
|
|
return 0; \
|
|
} \
|
|
early_initcall(trace_init_flags_##name);
|
|
|
|
#define __TRACE_EVENT_PERF_PERM(name, expr...) \
|
|
static int perf_perm_##name(struct trace_event_call *tp_event, \
|
|
struct perf_event *p_event) \
|
|
{ \
|
|
return ({ expr; }); \
|
|
} \
|
|
static int __init trace_init_perf_perm_##name(void) \
|
|
{ \
|
|
event_##name.perf_perm = &perf_perm_##name; \
|
|
return 0; \
|
|
} \
|
|
early_initcall(trace_init_perf_perm_##name);
|
|
|
|
#define PERF_MAX_TRACE_SIZE 8192
|
|
|
|
#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */
|
|
|
|
enum event_trigger_type {
|
|
ETT_NONE = (0),
|
|
ETT_TRACE_ONOFF = (1 << 0),
|
|
ETT_SNAPSHOT = (1 << 1),
|
|
ETT_STACKTRACE = (1 << 2),
|
|
ETT_EVENT_ENABLE = (1 << 3),
|
|
ETT_EVENT_HIST = (1 << 4),
|
|
ETT_HIST_ENABLE = (1 << 5),
|
|
};
|
|
|
|
extern int filter_match_preds(struct event_filter *filter, void *rec);
|
|
|
|
extern enum event_trigger_type
|
|
event_triggers_call(struct trace_event_file *file, void *rec,
|
|
struct ring_buffer_event *event);
|
|
extern void
|
|
event_triggers_post_call(struct trace_event_file *file,
|
|
enum event_trigger_type tt);
|
|
|
|
bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
|
|
|
|
/**
|
|
* trace_trigger_soft_disabled - do triggers and test if soft disabled
|
|
* @file: The file pointer of the event to test
|
|
*
|
|
* If any triggers without filters are attached to this event, they
|
|
* will be called here. If the event is soft disabled and has no
|
|
* triggers that require testing the fields, it will return true,
|
|
* otherwise false.
|
|
*/
|
|
static inline bool
|
|
trace_trigger_soft_disabled(struct trace_event_file *file)
|
|
{
|
|
unsigned long eflags = file->flags;
|
|
|
|
if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
|
|
if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
|
|
event_triggers_call(file, NULL, NULL);
|
|
if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
|
|
return true;
|
|
if (eflags & EVENT_FILE_FL_PID_FILTER)
|
|
return trace_event_ignore_this_pid(file);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
#ifdef CONFIG_BPF_EVENTS
|
|
unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx);
|
|
int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog);
|
|
void perf_event_detach_bpf_prog(struct perf_event *event);
|
|
int perf_event_query_prog_array(struct perf_event *event, void __user *info);
|
|
int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *prog);
|
|
int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *prog);
|
|
struct bpf_raw_event_map *bpf_find_raw_tracepoint(const char *name);
|
|
int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
|
|
u32 *fd_type, const char **buf,
|
|
u64 *probe_offset, u64 *probe_addr);
|
|
#else
|
|
static inline unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline int
|
|
perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void perf_event_detach_bpf_prog(struct perf_event *event) { }
|
|
|
|
static inline int
|
|
perf_event_query_prog_array(struct perf_event *event, void __user *info)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *p)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *p)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
static inline struct bpf_raw_event_map *bpf_find_raw_tracepoint(const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline int bpf_get_perf_event_info(const struct perf_event *event,
|
|
u32 *prog_id, u32 *fd_type,
|
|
const char **buf, u64 *probe_offset,
|
|
u64 *probe_addr)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
#endif
|
|
|
|
enum {
|
|
FILTER_OTHER = 0,
|
|
FILTER_STATIC_STRING,
|
|
FILTER_DYN_STRING,
|
|
FILTER_PTR_STRING,
|
|
FILTER_TRACE_FN,
|
|
FILTER_COMM,
|
|
FILTER_CPU,
|
|
};
|
|
|
|
extern int trace_event_raw_init(struct trace_event_call *call);
|
|
extern int trace_define_field(struct trace_event_call *call, const char *type,
|
|
const char *name, int offset, int size,
|
|
int is_signed, int filter_type);
|
|
extern int trace_add_event_call(struct trace_event_call *call);
|
|
extern int trace_remove_event_call(struct trace_event_call *call);
|
|
extern int trace_event_get_offsets(struct trace_event_call *call);
|
|
|
|
#define is_signed_type(type) (((type)(-1)) < (type)1)
|
|
|
|
int trace_set_clr_event(const char *system, const char *event, int set);
|
|
|
|
/*
|
|
* The double __builtin_constant_p is because gcc will give us an error
|
|
* if we try to allocate the static variable to fmt if it is not a
|
|
* constant. Even with the outer if statement optimizing out.
|
|
*/
|
|
#define event_trace_printk(ip, fmt, args...) \
|
|
do { \
|
|
__trace_printk_check_format(fmt, ##args); \
|
|
tracing_record_cmdline(current); \
|
|
if (__builtin_constant_p(fmt)) { \
|
|
static const char *trace_printk_fmt \
|
|
__attribute__((section("__trace_printk_fmt"))) = \
|
|
__builtin_constant_p(fmt) ? fmt : NULL; \
|
|
\
|
|
__trace_bprintk(ip, trace_printk_fmt, ##args); \
|
|
} else \
|
|
__trace_printk(ip, fmt, ##args); \
|
|
} while (0)
|
|
|
|
#ifdef CONFIG_PERF_EVENTS
|
|
struct perf_event;
|
|
|
|
DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
|
|
DECLARE_PER_CPU(int, bpf_kprobe_override);
|
|
|
|
extern int perf_trace_init(struct perf_event *event);
|
|
extern void perf_trace_destroy(struct perf_event *event);
|
|
extern int perf_trace_add(struct perf_event *event, int flags);
|
|
extern void perf_trace_del(struct perf_event *event, int flags);
|
|
#ifdef CONFIG_KPROBE_EVENTS
|
|
extern int perf_kprobe_init(struct perf_event *event, bool is_retprobe);
|
|
extern void perf_kprobe_destroy(struct perf_event *event);
|
|
extern int bpf_get_kprobe_info(const struct perf_event *event,
|
|
u32 *fd_type, const char **symbol,
|
|
u64 *probe_offset, u64 *probe_addr,
|
|
bool perf_type_tracepoint);
|
|
#endif
|
|
#ifdef CONFIG_UPROBE_EVENTS
|
|
extern int perf_uprobe_init(struct perf_event *event, bool is_retprobe);
|
|
extern void perf_uprobe_destroy(struct perf_event *event);
|
|
extern int bpf_get_uprobe_info(const struct perf_event *event,
|
|
u32 *fd_type, const char **filename,
|
|
u64 *probe_offset, u64 *probe_addr,
|
|
bool perf_type_tracepoint);
|
|
#endif
|
|
extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
|
|
char *filter_str);
|
|
extern void ftrace_profile_free_filter(struct perf_event *event);
|
|
void perf_trace_buf_update(void *record, u16 type);
|
|
void *perf_trace_buf_alloc(int size, struct pt_regs **regs, int *rctxp);
|
|
|
|
void bpf_trace_run1(struct bpf_prog *prog, u64 arg1);
|
|
void bpf_trace_run2(struct bpf_prog *prog, u64 arg1, u64 arg2);
|
|
void bpf_trace_run3(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3);
|
|
void bpf_trace_run4(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4);
|
|
void bpf_trace_run5(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5);
|
|
void bpf_trace_run6(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6);
|
|
void bpf_trace_run7(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7);
|
|
void bpf_trace_run8(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
|
|
u64 arg8);
|
|
void bpf_trace_run9(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
|
|
u64 arg8, u64 arg9);
|
|
void bpf_trace_run10(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
|
|
u64 arg8, u64 arg9, u64 arg10);
|
|
void bpf_trace_run11(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
|
|
u64 arg8, u64 arg9, u64 arg10, u64 arg11);
|
|
void bpf_trace_run12(struct bpf_prog *prog, u64 arg1, u64 arg2,
|
|
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
|
|
u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12);
|
|
void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx,
|
|
struct trace_event_call *call, u64 count,
|
|
struct pt_regs *regs, struct hlist_head *head,
|
|
struct task_struct *task);
|
|
|
|
static inline void
|
|
perf_trace_buf_submit(void *raw_data, int size, int rctx, u16 type,
|
|
u64 count, struct pt_regs *regs, void *head,
|
|
struct task_struct *task)
|
|
{
|
|
perf_tp_event(type, count, raw_data, size, regs, head, rctx, task);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* _LINUX_TRACE_EVENT_H */
|