| /* |
| * Performance events: |
| * |
| * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> |
| * 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 |
| * |
| * For licencing details see kernel-base/COPYING |
| */ |
| #ifndef _UAPI_LINUX_PERF_EVENT_H |
| #define _UAPI_LINUX_PERF_EVENT_H |
| |
| #include <linux/types.h> |
| #include <linux/ioctl.h> |
| #include <asm/byteorder.h> |
| |
| /* |
| * 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: |
| * |
| * @sample_max_stack: Max number of frame pointers in a callchain, |
| * should be < /proc/sys/kernel/perf_event_max_stack |
| */ |
| 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 */ |
| namespaces : 1, /* include namespaces data */ |
| __reserved_1 : 35; |
| |
| 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; |
| __u16 sample_max_stack; |
| __u16 __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; |
| }; |
| |
| struct perf_ns_link_info { |
| __u64 dev; |
| __u64 ino; |
| }; |
| |
| enum { |
| NET_NS_INDEX = 0, |
| UTS_NS_INDEX = 1, |
| IPC_NS_INDEX = 2, |
| PID_NS_INDEX = 3, |
| USER_NS_INDEX = 4, |
| MNT_NS_INDEX = 5, |
| CGROUP_NS_INDEX = 6, |
| |
| NR_NAMESPACES, /* number of available namespaces */ |
| }; |
| |
| 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, |
| |
| /* |
| * struct { |
| * struct perf_event_header header; |
| * u32 pid; |
| * u32 tid; |
| * u64 nr_namespaces; |
| * { u64 dev, inode; } [nr_namespaces]; |
| * struct sample_id sample_id; |
| * }; |
| */ |
| PERF_RECORD_NAMESPACES = 16, |
| |
| 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 */ |