X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Fperf_event.h;h=356d74bbde79d1015b18c78188033655a810a69f;hb=HEAD;hp=48946c534819f24152bc18a32d57cf42501cad20;hpb=c0c0989ab70574e09b2f7e8b48c2da6af664a849;p=lttng-ust.git diff --git a/liblttng-ust/perf_event.h b/liblttng-ust/perf_event.h deleted file mode 100644 index 48946c53..00000000 --- a/liblttng-ust/perf_event.h +++ /dev/null @@ -1,982 +0,0 @@ -/* - * SPDX-License-Identifier: GPL-2.0-only - * - * Performance events: - * - * Copyright (C) 2008-2009, Thomas Gleixner - * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar - * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra - * - * Data type definitions, declarations, prototypes. - * - * Started by: Thomas Gleixner and Ingo Molnar - * - * Header copied from Linux kernel v4.7 installed headers. - */ - -#ifndef _UAPI_LINUX_PERF_EVENT_H -#define _UAPI_LINUX_PERF_EVENT_H - -#include -#include -#include - -/* - * User-space ABI bits: - */ - -/* - * attr.type - */ -enum perf_type_id { - PERF_TYPE_HARDWARE = 0, - PERF_TYPE_SOFTWARE = 1, - PERF_TYPE_TRACEPOINT = 2, - PERF_TYPE_HW_CACHE = 3, - PERF_TYPE_RAW = 4, - PERF_TYPE_BREAKPOINT = 5, - - PERF_TYPE_MAX, /* non-ABI */ -}; - -/* - * Generalized performance event event_id types, used by the - * attr.event_id parameter of the sys_perf_event_open() - * syscall: - */ -enum perf_hw_id { - /* - * Common hardware events, generalized by the kernel: - */ - PERF_COUNT_HW_CPU_CYCLES = 0, - PERF_COUNT_HW_INSTRUCTIONS = 1, - PERF_COUNT_HW_CACHE_REFERENCES = 2, - PERF_COUNT_HW_CACHE_MISSES = 3, - PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, - PERF_COUNT_HW_BRANCH_MISSES = 5, - PERF_COUNT_HW_BUS_CYCLES = 6, - PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, - PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, - PERF_COUNT_HW_REF_CPU_CYCLES = 9, - - PERF_COUNT_HW_MAX, /* non-ABI */ -}; - -/* - * Generalized hardware cache events: - * - * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x - * { read, write, prefetch } x - * { accesses, misses } - */ -enum perf_hw_cache_id { - PERF_COUNT_HW_CACHE_L1D = 0, - PERF_COUNT_HW_CACHE_L1I = 1, - PERF_COUNT_HW_CACHE_LL = 2, - PERF_COUNT_HW_CACHE_DTLB = 3, - PERF_COUNT_HW_CACHE_ITLB = 4, - PERF_COUNT_HW_CACHE_BPU = 5, - PERF_COUNT_HW_CACHE_NODE = 6, - - PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ -}; - -enum perf_hw_cache_op_id { - PERF_COUNT_HW_CACHE_OP_READ = 0, - PERF_COUNT_HW_CACHE_OP_WRITE = 1, - PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, - - PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ -}; - -enum perf_hw_cache_op_result_id { - PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, - PERF_COUNT_HW_CACHE_RESULT_MISS = 1, - - PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ -}; - -/* - * Special "software" events provided by the kernel, even if the hardware - * does not support performance events. These events measure various - * physical and sw events of the kernel (and allow the profiling of them as - * well): - */ -enum perf_sw_ids { - PERF_COUNT_SW_CPU_CLOCK = 0, - PERF_COUNT_SW_TASK_CLOCK = 1, - PERF_COUNT_SW_PAGE_FAULTS = 2, - PERF_COUNT_SW_CONTEXT_SWITCHES = 3, - PERF_COUNT_SW_CPU_MIGRATIONS = 4, - PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, - PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, - PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, - PERF_COUNT_SW_EMULATION_FAULTS = 8, - PERF_COUNT_SW_DUMMY = 9, - PERF_COUNT_SW_BPF_OUTPUT = 10, - - PERF_COUNT_SW_MAX, /* non-ABI */ -}; - -/* - * Bits that can be set in attr.sample_type to request information - * in the overflow packets. - */ -enum perf_event_sample_format { - PERF_SAMPLE_IP = 1U << 0, - PERF_SAMPLE_TID = 1U << 1, - PERF_SAMPLE_TIME = 1U << 2, - PERF_SAMPLE_ADDR = 1U << 3, - PERF_SAMPLE_READ = 1U << 4, - PERF_SAMPLE_CALLCHAIN = 1U << 5, - PERF_SAMPLE_ID = 1U << 6, - PERF_SAMPLE_CPU = 1U << 7, - PERF_SAMPLE_PERIOD = 1U << 8, - PERF_SAMPLE_STREAM_ID = 1U << 9, - PERF_SAMPLE_RAW = 1U << 10, - PERF_SAMPLE_BRANCH_STACK = 1U << 11, - PERF_SAMPLE_REGS_USER = 1U << 12, - PERF_SAMPLE_STACK_USER = 1U << 13, - PERF_SAMPLE_WEIGHT = 1U << 14, - PERF_SAMPLE_DATA_SRC = 1U << 15, - PERF_SAMPLE_IDENTIFIER = 1U << 16, - PERF_SAMPLE_TRANSACTION = 1U << 17, - PERF_SAMPLE_REGS_INTR = 1U << 18, - - PERF_SAMPLE_MAX = 1U << 19, /* non-ABI */ -}; - -/* - * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set - * - * If the user does not pass priv level information via branch_sample_type, - * the kernel uses the event's priv level. Branch and event priv levels do - * not have to match. Branch priv level is checked for permissions. - * - * The branch types can be combined, however BRANCH_ANY covers all types - * of branches and therefore it supersedes all the other types. - */ -enum perf_branch_sample_type_shift { - PERF_SAMPLE_BRANCH_USER_SHIFT = 0, /* user branches */ - PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1, /* kernel branches */ - PERF_SAMPLE_BRANCH_HV_SHIFT = 2, /* hypervisor branches */ - - PERF_SAMPLE_BRANCH_ANY_SHIFT = 3, /* any branch types */ - PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT = 4, /* any call branch */ - PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT = 5, /* any return branch */ - PERF_SAMPLE_BRANCH_IND_CALL_SHIFT = 6, /* indirect calls */ - PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT = 7, /* transaction aborts */ - PERF_SAMPLE_BRANCH_IN_TX_SHIFT = 8, /* in transaction */ - PERF_SAMPLE_BRANCH_NO_TX_SHIFT = 9, /* not in transaction */ - PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */ - - PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */ - PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */ - PERF_SAMPLE_BRANCH_CALL_SHIFT = 13, /* direct call */ - - PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT = 14, /* no flags */ - PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT = 15, /* no cycles */ - - PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */ -}; - -enum perf_branch_sample_type { - PERF_SAMPLE_BRANCH_USER = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT, - PERF_SAMPLE_BRANCH_KERNEL = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT, - PERF_SAMPLE_BRANCH_HV = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT, - - PERF_SAMPLE_BRANCH_ANY = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT, - PERF_SAMPLE_BRANCH_ANY_CALL = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT, - PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT, - PERF_SAMPLE_BRANCH_IND_CALL = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT, - PERF_SAMPLE_BRANCH_ABORT_TX = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT, - PERF_SAMPLE_BRANCH_IN_TX = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT, - PERF_SAMPLE_BRANCH_NO_TX = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT, - PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT, - - PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT, - PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT, - PERF_SAMPLE_BRANCH_CALL = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT, - - PERF_SAMPLE_BRANCH_NO_FLAGS = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT, - PERF_SAMPLE_BRANCH_NO_CYCLES = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT, - - PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT, -}; - -#define PERF_SAMPLE_BRANCH_PLM_ALL \ - (PERF_SAMPLE_BRANCH_USER|\ - PERF_SAMPLE_BRANCH_KERNEL|\ - PERF_SAMPLE_BRANCH_HV) - -/* - * Values to determine ABI of the registers dump. - */ -enum perf_sample_regs_abi { - PERF_SAMPLE_REGS_ABI_NONE = 0, - PERF_SAMPLE_REGS_ABI_32 = 1, - PERF_SAMPLE_REGS_ABI_64 = 2, -}; - -/* - * Values for the memory transaction event qualifier, mostly for - * abort events. Multiple bits can be set. - */ -enum { - PERF_TXN_ELISION = (1 << 0), /* From elision */ - PERF_TXN_TRANSACTION = (1 << 1), /* From transaction */ - PERF_TXN_SYNC = (1 << 2), /* Instruction is related */ - PERF_TXN_ASYNC = (1 << 3), /* Instruction not related */ - PERF_TXN_RETRY = (1 << 4), /* Retry possible */ - PERF_TXN_CONFLICT = (1 << 5), /* Conflict abort */ - PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */ - PERF_TXN_CAPACITY_READ = (1 << 7), /* Capacity read abort */ - - PERF_TXN_MAX = (1 << 8), /* non-ABI */ - - /* bits 32..63 are reserved for the abort code */ - - PERF_TXN_ABORT_MASK = (0xffffffffULL << 32), - PERF_TXN_ABORT_SHIFT = 32, -}; - -/* - * The format of the data returned by read() on a perf event fd, - * as specified by attr.read_format: - * - * struct read_format { - * { u64 value; - * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED - * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING - * { u64 id; } && PERF_FORMAT_ID - * } && !PERF_FORMAT_GROUP - * - * { u64 nr; - * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED - * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING - * { u64 value; - * { u64 id; } && PERF_FORMAT_ID - * } cntr[nr]; - * } && PERF_FORMAT_GROUP - * }; - */ -enum perf_event_read_format { - PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, - PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, - PERF_FORMAT_ID = 1U << 2, - PERF_FORMAT_GROUP = 1U << 3, - - PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ -}; - -#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ -#define PERF_ATTR_SIZE_VER1 72 /* add: config2 */ -#define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */ -#define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */ - /* add: sample_stack_user */ -#define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */ -#define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */ - -/* - * Hardware event_id to monitor via a performance monitoring event: - */ -struct perf_event_attr { - - /* - * Major type: hardware/software/tracepoint/etc. - */ - __u32 type; - - /* - * Size of the attr structure, for fwd/bwd compat. - */ - __u32 size; - - /* - * Type specific configuration information. - */ - __u64 config; - - union { - __u64 sample_period; - __u64 sample_freq; - }; - - __u64 sample_type; - __u64 read_format; - - __u64 disabled : 1, /* off by default */ - inherit : 1, /* children inherit it */ - pinned : 1, /* must always be on PMU */ - exclusive : 1, /* only group on PMU */ - exclude_user : 1, /* don't count user */ - exclude_kernel : 1, /* ditto kernel */ - exclude_hv : 1, /* ditto hypervisor */ - exclude_idle : 1, /* don't count when idle */ - mmap : 1, /* include mmap data */ - comm : 1, /* include comm data */ - freq : 1, /* use freq, not period */ - inherit_stat : 1, /* per task counts */ - enable_on_exec : 1, /* next exec enables */ - task : 1, /* trace fork/exit */ - watermark : 1, /* wakeup_watermark */ - /* - * precise_ip: - * - * 0 - SAMPLE_IP can have arbitrary skid - * 1 - SAMPLE_IP must have constant skid - * 2 - SAMPLE_IP requested to have 0 skid - * 3 - SAMPLE_IP must have 0 skid - * - * See also PERF_RECORD_MISC_EXACT_IP - */ - precise_ip : 2, /* skid constraint */ - mmap_data : 1, /* non-exec mmap data */ - sample_id_all : 1, /* sample_type all events */ - - exclude_host : 1, /* don't count in host */ - exclude_guest : 1, /* don't count in guest */ - - exclude_callchain_kernel : 1, /* exclude kernel callchains */ - exclude_callchain_user : 1, /* exclude user callchains */ - mmap2 : 1, /* include mmap with inode data */ - comm_exec : 1, /* flag comm events that are due to an exec */ - use_clockid : 1, /* use @clockid for time fields */ - context_switch : 1, /* context switch data */ - write_backward : 1, /* Write ring buffer from end to beginning */ - __reserved_1 : 36; - - union { - __u32 wakeup_events; /* wakeup every n events */ - __u32 wakeup_watermark; /* bytes before wakeup */ - }; - - __u32 bp_type; - union { - __u64 bp_addr; - __u64 config1; /* extension of config */ - }; - union { - __u64 bp_len; - __u64 config2; /* extension of config1 */ - }; - __u64 branch_sample_type; /* enum perf_branch_sample_type */ - - /* - * Defines set of user regs to dump on samples. - * See asm/perf_regs.h for details. - */ - __u64 sample_regs_user; - - /* - * Defines size of the user stack to dump on samples. - */ - __u32 sample_stack_user; - - __s32 clockid; - /* - * Defines set of regs to dump for each sample - * state captured on: - * - precise = 0: PMU interrupt - * - precise > 0: sampled instruction - * - * See asm/perf_regs.h for details. - */ - __u64 sample_regs_intr; - - /* - * Wakeup watermark for AUX area - */ - __u32 aux_watermark; - __u32 __reserved_2; /* align to __u64 */ -}; - -#define perf_flags(attr) (*(&(attr)->read_format + 1)) - -/* - * Ioctls that can be done on a perf event fd: - */ -#define PERF_EVENT_IOC_ENABLE _IO ('$', 0) -#define PERF_EVENT_IOC_DISABLE _IO ('$', 1) -#define PERF_EVENT_IOC_REFRESH _IO ('$', 2) -#define PERF_EVENT_IOC_RESET _IO ('$', 3) -#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64) -#define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) -#define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) -#define PERF_EVENT_IOC_ID _IOR('$', 7, __u64 *) -#define PERF_EVENT_IOC_SET_BPF _IOW('$', 8, __u32) -#define PERF_EVENT_IOC_PAUSE_OUTPUT _IOW('$', 9, __u32) - -enum perf_event_ioc_flags { - PERF_IOC_FLAG_GROUP = 1U << 0, -}; - -/* - * Structure of the page that can be mapped via mmap - */ -struct perf_event_mmap_page { - __u32 version; /* version number of this structure */ - __u32 compat_version; /* lowest version this is compat with */ - - /* - * Bits needed to read the hw events in user-space. - * - * u32 seq, time_mult, time_shift, index, width; - * u64 count, enabled, running; - * u64 cyc, time_offset; - * s64 pmc = 0; - * - * do { - * seq = pc->lock; - * barrier() - * - * enabled = pc->time_enabled; - * running = pc->time_running; - * - * if (pc->cap_usr_time && enabled != running) { - * cyc = rdtsc(); - * time_offset = pc->time_offset; - * time_mult = pc->time_mult; - * time_shift = pc->time_shift; - * } - * - * index = pc->index; - * count = pc->offset; - * if (pc->cap_user_rdpmc && index) { - * width = pc->pmc_width; - * pmc = rdpmc(index - 1); - * } - * - * barrier(); - * } while (pc->lock != seq); - * - * NOTE: for obvious reason this only works on self-monitoring - * processes. - */ - __u32 lock; /* seqlock for synchronization */ - __u32 index; /* hardware event identifier */ - __s64 offset; /* add to hardware event value */ - __u64 time_enabled; /* time event active */ - __u64 time_running; /* time event on cpu */ - union { - __u64 capabilities; - struct { - __u64 cap_bit0 : 1, /* Always 0, deprecated, see commit 860f085b74e9 */ - cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */ - - cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ - cap_user_time : 1, /* The time_* fields are used */ - cap_user_time_zero : 1, /* The time_zero field is used */ - cap_____res : 59; - }; - }; - - /* - * If cap_user_rdpmc this field provides the bit-width of the value - * read using the rdpmc() or equivalent instruction. This can be used - * to sign extend the result like: - * - * pmc <<= 64 - width; - * pmc >>= 64 - width; // signed shift right - * count += pmc; - */ - __u16 pmc_width; - - /* - * If cap_usr_time the below fields can be used to compute the time - * delta since time_enabled (in ns) using rdtsc or similar. - * - * u64 quot, rem; - * u64 delta; - * - * quot = (cyc >> time_shift); - * rem = cyc & (((u64)1 << time_shift) - 1); - * delta = time_offset + quot * time_mult + - * ((rem * time_mult) >> time_shift); - * - * Where time_offset,time_mult,time_shift and cyc are read in the - * seqcount loop described above. This delta can then be added to - * enabled and possible running (if index), improving the scaling: - * - * enabled += delta; - * if (index) - * running += delta; - * - * quot = count / running; - * rem = count % running; - * count = quot * enabled + (rem * enabled) / running; - */ - __u16 time_shift; - __u32 time_mult; - __u64 time_offset; - /* - * If cap_usr_time_zero, the hardware clock (e.g. TSC) can be calculated - * from sample timestamps. - * - * time = timestamp - time_zero; - * quot = time / time_mult; - * rem = time % time_mult; - * cyc = (quot << time_shift) + (rem << time_shift) / time_mult; - * - * And vice versa: - * - * quot = cyc >> time_shift; - * rem = cyc & (((u64)1 << time_shift) - 1); - * timestamp = time_zero + quot * time_mult + - * ((rem * time_mult) >> time_shift); - */ - __u64 time_zero; - __u32 size; /* Header size up to __reserved[] fields. */ - - /* - * Hole for extension of the self monitor capabilities - */ - - __u8 __reserved[118*8+4]; /* align to 1k. */ - - /* - * Control data for the mmap() data buffer. - * - * User-space reading the @data_head value should issue an smp_rmb(), - * after reading this value. - * - * When the mapping is PROT_WRITE the @data_tail value should be - * written by userspace to reflect the last read data, after issueing - * an smp_mb() to separate the data read from the ->data_tail store. - * In this case the kernel will not over-write unread data. - * - * See perf_output_put_handle() for the data ordering. - * - * data_{offset,size} indicate the location and size of the perf record - * buffer within the mmapped area. - */ - __u64 data_head; /* head in the data section */ - __u64 data_tail; /* user-space written tail */ - __u64 data_offset; /* where the buffer starts */ - __u64 data_size; /* data buffer size */ - - /* - * AUX area is defined by aux_{offset,size} fields that should be set - * by the userspace, so that - * - * aux_offset >= data_offset + data_size - * - * prior to mmap()ing it. Size of the mmap()ed area should be aux_size. - * - * Ring buffer pointers aux_{head,tail} have the same semantics as - * data_{head,tail} and same ordering rules apply. - */ - __u64 aux_head; - __u64 aux_tail; - __u64 aux_offset; - __u64 aux_size; -}; - -#define PERF_RECORD_MISC_CPUMODE_MASK (7 << 0) -#define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) -#define PERF_RECORD_MISC_KERNEL (1 << 0) -#define PERF_RECORD_MISC_USER (2 << 0) -#define PERF_RECORD_MISC_HYPERVISOR (3 << 0) -#define PERF_RECORD_MISC_GUEST_KERNEL (4 << 0) -#define PERF_RECORD_MISC_GUEST_USER (5 << 0) - -/* - * Indicates that /proc/PID/maps parsing are truncated by time out. - */ -#define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT (1 << 12) -/* - * PERF_RECORD_MISC_MMAP_DATA and PERF_RECORD_MISC_COMM_EXEC are used on - * different events so can reuse the same bit position. - * Ditto PERF_RECORD_MISC_SWITCH_OUT. - */ -#define PERF_RECORD_MISC_MMAP_DATA (1 << 13) -#define PERF_RECORD_MISC_COMM_EXEC (1 << 13) -#define PERF_RECORD_MISC_SWITCH_OUT (1 << 13) -/* - * Indicates that the content of PERF_SAMPLE_IP points to - * the actual instruction that triggered the event. See also - * perf_event_attr::precise_ip. - */ -#define PERF_RECORD_MISC_EXACT_IP (1 << 14) -/* - * Reserve the last bit to indicate some extended misc field - */ -#define PERF_RECORD_MISC_EXT_RESERVED (1 << 15) - -struct perf_event_header { - __u32 type; - __u16 misc; - __u16 size; -}; - -enum perf_event_type { - - /* - * If perf_event_attr.sample_id_all is set then all event types will - * have the sample_type selected fields related to where/when - * (identity) an event took place (TID, TIME, ID, STREAM_ID, CPU, - * IDENTIFIER) described in PERF_RECORD_SAMPLE below, it will be stashed - * just after the perf_event_header and the fields already present for - * the existing fields, i.e. at the end of the payload. That way a newer - * perf.data file will be supported by older perf tools, with these new - * optional fields being ignored. - * - * struct sample_id { - * { u32 pid, tid; } && PERF_SAMPLE_TID - * { u64 time; } && PERF_SAMPLE_TIME - * { u64 id; } && PERF_SAMPLE_ID - * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID - * { u32 cpu, res; } && PERF_SAMPLE_CPU - * { u64 id; } && PERF_SAMPLE_IDENTIFIER - * } && perf_event_attr::sample_id_all - * - * Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. The - * advantage of PERF_SAMPLE_IDENTIFIER is that its position is fixed - * relative to header.size. - */ - - /* - * The MMAP events record the PROT_EXEC mappings so that we can - * correlate userspace IPs to code. They have the following structure: - * - * struct { - * struct perf_event_header header; - * - * u32 pid, tid; - * u64 addr; - * u64 len; - * u64 pgoff; - * char filename[]; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_MMAP = 1, - - /* - * struct { - * struct perf_event_header header; - * u64 id; - * u64 lost; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_LOST = 2, - - /* - * struct { - * struct perf_event_header header; - * - * u32 pid, tid; - * char comm[]; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_COMM = 3, - - /* - * struct { - * struct perf_event_header header; - * u32 pid, ppid; - * u32 tid, ptid; - * u64 time; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_EXIT = 4, - - /* - * struct { - * struct perf_event_header header; - * u64 time; - * u64 id; - * u64 stream_id; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_THROTTLE = 5, - PERF_RECORD_UNTHROTTLE = 6, - - /* - * struct { - * struct perf_event_header header; - * u32 pid, ppid; - * u32 tid, ptid; - * u64 time; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_FORK = 7, - - /* - * struct { - * struct perf_event_header header; - * u32 pid, tid; - * - * struct read_format values; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_READ = 8, - - /* - * struct { - * struct perf_event_header header; - * - * # - * # Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. - * # The advantage of PERF_SAMPLE_IDENTIFIER is that its position - * # is fixed relative to header. - * # - * - * { u64 id; } && PERF_SAMPLE_IDENTIFIER - * { u64 ip; } && PERF_SAMPLE_IP - * { u32 pid, tid; } && PERF_SAMPLE_TID - * { u64 time; } && PERF_SAMPLE_TIME - * { u64 addr; } && PERF_SAMPLE_ADDR - * { u64 id; } && PERF_SAMPLE_ID - * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID - * { u32 cpu, res; } && PERF_SAMPLE_CPU - * { u64 period; } && PERF_SAMPLE_PERIOD - * - * { struct read_format values; } && PERF_SAMPLE_READ - * - * { u64 nr, - * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN - * - * # - * # The RAW record below is opaque data wrt the ABI - * # - * # That is, the ABI doesn't make any promises wrt to - * # the stability of its content, it may vary depending - * # on event, hardware, kernel version and phase of - * # the moon. - * # - * # In other words, PERF_SAMPLE_RAW contents are not an ABI. - * # - * - * { u32 size; - * char data[size];}&& PERF_SAMPLE_RAW - * - * { u64 nr; - * { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK - * - * { u64 abi; # enum perf_sample_regs_abi - * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER - * - * { u64 size; - * char data[size]; - * u64 dyn_size; } && PERF_SAMPLE_STACK_USER - * - * { u64 weight; } && PERF_SAMPLE_WEIGHT - * { u64 data_src; } && PERF_SAMPLE_DATA_SRC - * { u64 transaction; } && PERF_SAMPLE_TRANSACTION - * { u64 abi; # enum perf_sample_regs_abi - * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR - * }; - */ - PERF_RECORD_SAMPLE = 9, - - /* - * The MMAP2 records are an augmented version of MMAP, they add - * maj, min, ino numbers to be used to uniquely identify each mapping - * - * struct { - * struct perf_event_header header; - * - * u32 pid, tid; - * u64 addr; - * u64 len; - * u64 pgoff; - * u32 maj; - * u32 min; - * u64 ino; - * u64 ino_generation; - * u32 prot, flags; - * char filename[]; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_MMAP2 = 10, - - /* - * Records that new data landed in the AUX buffer part. - * - * struct { - * struct perf_event_header header; - * - * u64 aux_offset; - * u64 aux_size; - * u64 flags; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_AUX = 11, - - /* - * Indicates that instruction trace has started - * - * struct { - * struct perf_event_header header; - * u32 pid; - * u32 tid; - * }; - */ - PERF_RECORD_ITRACE_START = 12, - - /* - * Records the dropped/lost sample number. - * - * struct { - * struct perf_event_header header; - * - * u64 lost; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_LOST_SAMPLES = 13, - - /* - * Records a context switch in or out (flagged by - * PERF_RECORD_MISC_SWITCH_OUT). See also - * PERF_RECORD_SWITCH_CPU_WIDE. - * - * struct { - * struct perf_event_header header; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_SWITCH = 14, - - /* - * CPU-wide version of PERF_RECORD_SWITCH with next_prev_pid and - * next_prev_tid that are the next (switching out) or previous - * (switching in) pid/tid. - * - * struct { - * struct perf_event_header header; - * u32 next_prev_pid; - * u32 next_prev_tid; - * struct sample_id sample_id; - * }; - */ - PERF_RECORD_SWITCH_CPU_WIDE = 15, - - PERF_RECORD_MAX, /* non-ABI */ -}; - -#define PERF_MAX_STACK_DEPTH 127 -#define PERF_MAX_CONTEXTS_PER_STACK 8 - -enum perf_callchain_context { - PERF_CONTEXT_HV = (__u64)-32, - PERF_CONTEXT_KERNEL = (__u64)-128, - PERF_CONTEXT_USER = (__u64)-512, - - PERF_CONTEXT_GUEST = (__u64)-2048, - PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, - PERF_CONTEXT_GUEST_USER = (__u64)-2560, - - PERF_CONTEXT_MAX = (__u64)-4095, -}; - -/** - * PERF_RECORD_AUX::flags bits - */ -#define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ -#define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ - -#define PERF_FLAG_FD_NO_GROUP (1UL << 0) -#define PERF_FLAG_FD_OUTPUT (1UL << 1) -#define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ -#define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ - -union perf_mem_data_src { - __u64 val; - struct { - __u64 mem_op:5, /* type of opcode */ - mem_lvl:14, /* memory hierarchy level */ - mem_snoop:5, /* snoop mode */ - mem_lock:2, /* lock instr */ - mem_dtlb:7, /* tlb access */ - mem_rsvd:31; - }; -}; - -/* type of opcode (load/store/prefetch,code) */ -#define PERF_MEM_OP_NA 0x01 /* not available */ -#define PERF_MEM_OP_LOAD 0x02 /* load instruction */ -#define PERF_MEM_OP_STORE 0x04 /* store instruction */ -#define PERF_MEM_OP_PFETCH 0x08 /* prefetch */ -#define PERF_MEM_OP_EXEC 0x10 /* code (execution) */ -#define PERF_MEM_OP_SHIFT 0 - -/* memory hierarchy (memory level, hit or miss) */ -#define PERF_MEM_LVL_NA 0x01 /* not available */ -#define PERF_MEM_LVL_HIT 0x02 /* hit level */ -#define PERF_MEM_LVL_MISS 0x04 /* miss level */ -#define PERF_MEM_LVL_L1 0x08 /* L1 */ -#define PERF_MEM_LVL_LFB 0x10 /* Line Fill Buffer */ -#define PERF_MEM_LVL_L2 0x20 /* L2 */ -#define PERF_MEM_LVL_L3 0x40 /* L3 */ -#define PERF_MEM_LVL_LOC_RAM 0x80 /* Local DRAM */ -#define PERF_MEM_LVL_REM_RAM1 0x100 /* Remote DRAM (1 hop) */ -#define PERF_MEM_LVL_REM_RAM2 0x200 /* Remote DRAM (2 hops) */ -#define PERF_MEM_LVL_REM_CCE1 0x400 /* Remote Cache (1 hop) */ -#define PERF_MEM_LVL_REM_CCE2 0x800 /* Remote Cache (2 hops) */ -#define PERF_MEM_LVL_IO 0x1000 /* I/O memory */ -#define PERF_MEM_LVL_UNC 0x2000 /* Uncached memory */ -#define PERF_MEM_LVL_SHIFT 5 - -/* snoop mode */ -#define PERF_MEM_SNOOP_NA 0x01 /* not available */ -#define PERF_MEM_SNOOP_NONE 0x02 /* no snoop */ -#define PERF_MEM_SNOOP_HIT 0x04 /* snoop hit */ -#define PERF_MEM_SNOOP_MISS 0x08 /* snoop miss */ -#define PERF_MEM_SNOOP_HITM 0x10 /* snoop hit modified */ -#define PERF_MEM_SNOOP_SHIFT 19 - -/* locked instruction */ -#define PERF_MEM_LOCK_NA 0x01 /* not available */ -#define PERF_MEM_LOCK_LOCKED 0x02 /* locked transaction */ -#define PERF_MEM_LOCK_SHIFT 24 - -/* TLB access */ -#define PERF_MEM_TLB_NA 0x01 /* not available */ -#define PERF_MEM_TLB_HIT 0x02 /* hit level */ -#define PERF_MEM_TLB_MISS 0x04 /* miss level */ -#define PERF_MEM_TLB_L1 0x08 /* L1 */ -#define PERF_MEM_TLB_L2 0x10 /* L2 */ -#define PERF_MEM_TLB_WK 0x20 /* Hardware Walker*/ -#define PERF_MEM_TLB_OS 0x40 /* OS fault handler */ -#define PERF_MEM_TLB_SHIFT 26 - -#define PERF_MEM_S(a, s) \ - (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT) - -/* - * single taken branch record layout: - * - * from: source instruction (may not always be a branch insn) - * to: branch target - * mispred: branch target was mispredicted - * predicted: branch target was predicted - * - * support for mispred, predicted is optional. In case it - * is not supported mispred = predicted = 0. - * - * in_tx: running in a hardware transaction - * abort: aborting a hardware transaction - * cycles: cycles from last branch (or 0 if not supported) - */ -struct perf_branch_entry { - __u64 from; - __u64 to; - __u64 mispred:1, /* target mispredicted */ - predicted:1,/* target predicted */ - in_tx:1, /* in transaction */ - abort:1, /* transaction abort */ - cycles:16, /* cycle count to last branch */ - reserved:44; -}; - -#endif /* _UAPI_LINUX_PERF_EVENT_H */