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![Rob Herring](/assets/img/avatar_default.png)
Arm SPEv1.2 adds another 64-bits of event filtering control. As the existing perf_event_attr::configN fields are all used up for SPE PMU, an additional field is needed. Add a new 'config3' field. Tested-by: James Clark <james.clark@arm.com> Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220825-arm-spe-v8-7-v4-7-327f860daf28@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
1448 lines
42 KiB
C
1448 lines
42 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Performance events:
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*
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* Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
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* Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar
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* Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra
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*
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* Data type definitions, declarations, prototypes.
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*
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* Started by: Thomas Gleixner and Ingo Molnar
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*
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* For licencing details see kernel-base/COPYING
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*/
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#ifndef _UAPI_LINUX_PERF_EVENT_H
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#define _UAPI_LINUX_PERF_EVENT_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#include <asm/byteorder.h>
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/*
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* User-space ABI bits:
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*/
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/*
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* attr.type
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*/
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enum perf_type_id {
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PERF_TYPE_HARDWARE = 0,
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PERF_TYPE_SOFTWARE = 1,
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PERF_TYPE_TRACEPOINT = 2,
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PERF_TYPE_HW_CACHE = 3,
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PERF_TYPE_RAW = 4,
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PERF_TYPE_BREAKPOINT = 5,
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PERF_TYPE_MAX, /* non-ABI */
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};
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/*
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* attr.config layout for type PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE
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* PERF_TYPE_HARDWARE: 0xEEEEEEEE000000AA
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* AA: hardware event ID
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* EEEEEEEE: PMU type ID
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* PERF_TYPE_HW_CACHE: 0xEEEEEEEE00DDCCBB
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* BB: hardware cache ID
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* CC: hardware cache op ID
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* DD: hardware cache op result ID
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* EEEEEEEE: PMU type ID
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* If the PMU type ID is 0, the PERF_TYPE_RAW will be applied.
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*/
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#define PERF_PMU_TYPE_SHIFT 32
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#define PERF_HW_EVENT_MASK 0xffffffff
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/*
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* Generalized performance event event_id types, used by the
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* attr.event_id parameter of the sys_perf_event_open()
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* syscall:
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*/
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enum perf_hw_id {
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/*
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* Common hardware events, generalized by the kernel:
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*/
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PERF_COUNT_HW_CPU_CYCLES = 0,
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PERF_COUNT_HW_INSTRUCTIONS = 1,
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PERF_COUNT_HW_CACHE_REFERENCES = 2,
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PERF_COUNT_HW_CACHE_MISSES = 3,
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PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4,
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PERF_COUNT_HW_BRANCH_MISSES = 5,
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PERF_COUNT_HW_BUS_CYCLES = 6,
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PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7,
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PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8,
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PERF_COUNT_HW_REF_CPU_CYCLES = 9,
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PERF_COUNT_HW_MAX, /* non-ABI */
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};
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/*
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* Generalized hardware cache events:
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*
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* { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
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* { read, write, prefetch } x
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* { accesses, misses }
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*/
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enum perf_hw_cache_id {
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PERF_COUNT_HW_CACHE_L1D = 0,
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PERF_COUNT_HW_CACHE_L1I = 1,
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PERF_COUNT_HW_CACHE_LL = 2,
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PERF_COUNT_HW_CACHE_DTLB = 3,
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PERF_COUNT_HW_CACHE_ITLB = 4,
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PERF_COUNT_HW_CACHE_BPU = 5,
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PERF_COUNT_HW_CACHE_NODE = 6,
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PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
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};
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enum perf_hw_cache_op_id {
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PERF_COUNT_HW_CACHE_OP_READ = 0,
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PERF_COUNT_HW_CACHE_OP_WRITE = 1,
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PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
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PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */
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};
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enum perf_hw_cache_op_result_id {
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PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0,
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PERF_COUNT_HW_CACHE_RESULT_MISS = 1,
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PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */
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};
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/*
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* Special "software" events provided by the kernel, even if the hardware
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* does not support performance events. These events measure various
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* physical and sw events of the kernel (and allow the profiling of them as
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* well):
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*/
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enum perf_sw_ids {
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PERF_COUNT_SW_CPU_CLOCK = 0,
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PERF_COUNT_SW_TASK_CLOCK = 1,
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PERF_COUNT_SW_PAGE_FAULTS = 2,
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PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
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PERF_COUNT_SW_CPU_MIGRATIONS = 4,
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PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
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PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
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PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
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PERF_COUNT_SW_EMULATION_FAULTS = 8,
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PERF_COUNT_SW_DUMMY = 9,
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PERF_COUNT_SW_BPF_OUTPUT = 10,
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PERF_COUNT_SW_CGROUP_SWITCHES = 11,
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PERF_COUNT_SW_MAX, /* non-ABI */
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};
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/*
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* Bits that can be set in attr.sample_type to request information
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* in the overflow packets.
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*/
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enum perf_event_sample_format {
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PERF_SAMPLE_IP = 1U << 0,
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PERF_SAMPLE_TID = 1U << 1,
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PERF_SAMPLE_TIME = 1U << 2,
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PERF_SAMPLE_ADDR = 1U << 3,
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PERF_SAMPLE_READ = 1U << 4,
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PERF_SAMPLE_CALLCHAIN = 1U << 5,
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PERF_SAMPLE_ID = 1U << 6,
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PERF_SAMPLE_CPU = 1U << 7,
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PERF_SAMPLE_PERIOD = 1U << 8,
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PERF_SAMPLE_STREAM_ID = 1U << 9,
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PERF_SAMPLE_RAW = 1U << 10,
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PERF_SAMPLE_BRANCH_STACK = 1U << 11,
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PERF_SAMPLE_REGS_USER = 1U << 12,
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PERF_SAMPLE_STACK_USER = 1U << 13,
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PERF_SAMPLE_WEIGHT = 1U << 14,
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PERF_SAMPLE_DATA_SRC = 1U << 15,
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PERF_SAMPLE_IDENTIFIER = 1U << 16,
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PERF_SAMPLE_TRANSACTION = 1U << 17,
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PERF_SAMPLE_REGS_INTR = 1U << 18,
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PERF_SAMPLE_PHYS_ADDR = 1U << 19,
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PERF_SAMPLE_AUX = 1U << 20,
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PERF_SAMPLE_CGROUP = 1U << 21,
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PERF_SAMPLE_DATA_PAGE_SIZE = 1U << 22,
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PERF_SAMPLE_CODE_PAGE_SIZE = 1U << 23,
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PERF_SAMPLE_WEIGHT_STRUCT = 1U << 24,
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PERF_SAMPLE_MAX = 1U << 25, /* non-ABI */
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};
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#define PERF_SAMPLE_WEIGHT_TYPE (PERF_SAMPLE_WEIGHT | PERF_SAMPLE_WEIGHT_STRUCT)
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/*
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* values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set
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*
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* If the user does not pass priv level information via branch_sample_type,
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* the kernel uses the event's priv level. Branch and event priv levels do
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* not have to match. Branch priv level is checked for permissions.
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*
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* The branch types can be combined, however BRANCH_ANY covers all types
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* of branches and therefore it supersedes all the other types.
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*/
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enum perf_branch_sample_type_shift {
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PERF_SAMPLE_BRANCH_USER_SHIFT = 0, /* user branches */
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PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1, /* kernel branches */
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PERF_SAMPLE_BRANCH_HV_SHIFT = 2, /* hypervisor branches */
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PERF_SAMPLE_BRANCH_ANY_SHIFT = 3, /* any branch types */
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PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT = 4, /* any call branch */
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PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT = 5, /* any return branch */
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PERF_SAMPLE_BRANCH_IND_CALL_SHIFT = 6, /* indirect calls */
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PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT = 7, /* transaction aborts */
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PERF_SAMPLE_BRANCH_IN_TX_SHIFT = 8, /* in transaction */
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PERF_SAMPLE_BRANCH_NO_TX_SHIFT = 9, /* not in transaction */
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PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */
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PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */
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PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */
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PERF_SAMPLE_BRANCH_CALL_SHIFT = 13, /* direct call */
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PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT = 14, /* no flags */
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PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT = 15, /* no cycles */
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PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT = 16, /* save branch type */
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PERF_SAMPLE_BRANCH_HW_INDEX_SHIFT = 17, /* save low level index of raw branch records */
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PERF_SAMPLE_BRANCH_PRIV_SAVE_SHIFT = 18, /* save privilege mode */
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PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */
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};
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enum perf_branch_sample_type {
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PERF_SAMPLE_BRANCH_USER = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT,
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PERF_SAMPLE_BRANCH_KERNEL = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT,
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PERF_SAMPLE_BRANCH_HV = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT,
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PERF_SAMPLE_BRANCH_ANY = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT,
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PERF_SAMPLE_BRANCH_ANY_CALL = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT,
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PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT,
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PERF_SAMPLE_BRANCH_IND_CALL = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT,
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PERF_SAMPLE_BRANCH_ABORT_TX = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT,
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PERF_SAMPLE_BRANCH_IN_TX = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT,
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PERF_SAMPLE_BRANCH_NO_TX = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT,
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PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT,
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PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT,
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PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT,
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PERF_SAMPLE_BRANCH_CALL = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT,
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PERF_SAMPLE_BRANCH_NO_FLAGS = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT,
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PERF_SAMPLE_BRANCH_NO_CYCLES = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT,
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PERF_SAMPLE_BRANCH_TYPE_SAVE =
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1U << PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT,
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PERF_SAMPLE_BRANCH_HW_INDEX = 1U << PERF_SAMPLE_BRANCH_HW_INDEX_SHIFT,
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PERF_SAMPLE_BRANCH_PRIV_SAVE = 1U << PERF_SAMPLE_BRANCH_PRIV_SAVE_SHIFT,
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PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
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};
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/*
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* Common flow change classification
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*/
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enum {
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PERF_BR_UNKNOWN = 0, /* unknown */
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PERF_BR_COND = 1, /* conditional */
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PERF_BR_UNCOND = 2, /* unconditional */
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PERF_BR_IND = 3, /* indirect */
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PERF_BR_CALL = 4, /* function call */
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PERF_BR_IND_CALL = 5, /* indirect function call */
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PERF_BR_RET = 6, /* function return */
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PERF_BR_SYSCALL = 7, /* syscall */
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PERF_BR_SYSRET = 8, /* syscall return */
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PERF_BR_COND_CALL = 9, /* conditional function call */
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PERF_BR_COND_RET = 10, /* conditional function return */
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PERF_BR_ERET = 11, /* exception return */
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PERF_BR_IRQ = 12, /* irq */
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PERF_BR_SERROR = 13, /* system error */
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PERF_BR_NO_TX = 14, /* not in transaction */
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PERF_BR_EXTEND_ABI = 15, /* extend ABI */
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PERF_BR_MAX,
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};
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/*
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* Common branch speculation outcome classification
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*/
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enum {
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PERF_BR_SPEC_NA = 0, /* Not available */
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PERF_BR_SPEC_WRONG_PATH = 1, /* Speculative but on wrong path */
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PERF_BR_NON_SPEC_CORRECT_PATH = 2, /* Non-speculative but on correct path */
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PERF_BR_SPEC_CORRECT_PATH = 3, /* Speculative and on correct path */
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PERF_BR_SPEC_MAX,
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};
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enum {
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PERF_BR_NEW_FAULT_ALGN = 0, /* Alignment fault */
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PERF_BR_NEW_FAULT_DATA = 1, /* Data fault */
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PERF_BR_NEW_FAULT_INST = 2, /* Inst fault */
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PERF_BR_NEW_ARCH_1 = 3, /* Architecture specific */
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PERF_BR_NEW_ARCH_2 = 4, /* Architecture specific */
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PERF_BR_NEW_ARCH_3 = 5, /* Architecture specific */
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PERF_BR_NEW_ARCH_4 = 6, /* Architecture specific */
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PERF_BR_NEW_ARCH_5 = 7, /* Architecture specific */
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PERF_BR_NEW_MAX,
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};
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enum {
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PERF_BR_PRIV_UNKNOWN = 0,
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PERF_BR_PRIV_USER = 1,
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PERF_BR_PRIV_KERNEL = 2,
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PERF_BR_PRIV_HV = 3,
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};
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#define PERF_BR_ARM64_FIQ PERF_BR_NEW_ARCH_1
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#define PERF_BR_ARM64_DEBUG_HALT PERF_BR_NEW_ARCH_2
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#define PERF_BR_ARM64_DEBUG_EXIT PERF_BR_NEW_ARCH_3
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#define PERF_BR_ARM64_DEBUG_INST PERF_BR_NEW_ARCH_4
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#define PERF_BR_ARM64_DEBUG_DATA PERF_BR_NEW_ARCH_5
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#define PERF_SAMPLE_BRANCH_PLM_ALL \
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(PERF_SAMPLE_BRANCH_USER|\
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PERF_SAMPLE_BRANCH_KERNEL|\
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PERF_SAMPLE_BRANCH_HV)
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/*
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* Values to determine ABI of the registers dump.
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*/
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enum perf_sample_regs_abi {
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PERF_SAMPLE_REGS_ABI_NONE = 0,
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PERF_SAMPLE_REGS_ABI_32 = 1,
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PERF_SAMPLE_REGS_ABI_64 = 2,
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};
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/*
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* Values for the memory transaction event qualifier, mostly for
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* abort events. Multiple bits can be set.
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*/
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enum {
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PERF_TXN_ELISION = (1 << 0), /* From elision */
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PERF_TXN_TRANSACTION = (1 << 1), /* From transaction */
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PERF_TXN_SYNC = (1 << 2), /* Instruction is related */
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PERF_TXN_ASYNC = (1 << 3), /* Instruction not related */
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PERF_TXN_RETRY = (1 << 4), /* Retry possible */
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PERF_TXN_CONFLICT = (1 << 5), /* Conflict abort */
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PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */
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PERF_TXN_CAPACITY_READ = (1 << 7), /* Capacity read abort */
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PERF_TXN_MAX = (1 << 8), /* non-ABI */
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/* bits 32..63 are reserved for the abort code */
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PERF_TXN_ABORT_MASK = (0xffffffffULL << 32),
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PERF_TXN_ABORT_SHIFT = 32,
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};
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/*
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* The format of the data returned by read() on a perf event fd,
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* as specified by attr.read_format:
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*
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* struct read_format {
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* { u64 value;
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* { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
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* { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
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* { u64 id; } && PERF_FORMAT_ID
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* { u64 lost; } && PERF_FORMAT_LOST
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* } && !PERF_FORMAT_GROUP
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*
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* { u64 nr;
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* { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
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* { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
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* { u64 value;
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* { u64 id; } && PERF_FORMAT_ID
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* { u64 lost; } && PERF_FORMAT_LOST
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* } cntr[nr];
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* } && PERF_FORMAT_GROUP
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* };
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*/
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enum perf_event_read_format {
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PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
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PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
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PERF_FORMAT_ID = 1U << 2,
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PERF_FORMAT_GROUP = 1U << 3,
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PERF_FORMAT_LOST = 1U << 4,
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PERF_FORMAT_MAX = 1U << 5, /* non-ABI */
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};
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#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
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#define PERF_ATTR_SIZE_VER1 72 /* add: config2 */
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#define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */
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#define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */
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/* add: sample_stack_user */
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#define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */
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#define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */
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#define PERF_ATTR_SIZE_VER6 120 /* add: aux_sample_size */
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#define PERF_ATTR_SIZE_VER7 128 /* add: sig_data */
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#define PERF_ATTR_SIZE_VER8 136 /* add: config3 */
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/*
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* Hardware event_id to monitor via a performance monitoring event:
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*
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* @sample_max_stack: Max number of frame pointers in a callchain,
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* should be < /proc/sys/kernel/perf_event_max_stack
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*/
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struct perf_event_attr {
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/*
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* Major type: hardware/software/tracepoint/etc.
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*/
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__u32 type;
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/*
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* Size of the attr structure, for fwd/bwd compat.
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*/
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__u32 size;
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/*
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* Type specific configuration information.
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*/
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__u64 config;
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union {
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__u64 sample_period;
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__u64 sample_freq;
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};
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__u64 sample_type;
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__u64 read_format;
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__u64 disabled : 1, /* off by default */
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inherit : 1, /* children inherit it */
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pinned : 1, /* must always be on PMU */
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exclusive : 1, /* only group on PMU */
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exclude_user : 1, /* don't count user */
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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 */
|
|
ksymbol : 1, /* include ksymbol events */
|
|
bpf_event : 1, /* include bpf events */
|
|
aux_output : 1, /* generate AUX records instead of events */
|
|
cgroup : 1, /* include cgroup events */
|
|
text_poke : 1, /* include text poke events */
|
|
build_id : 1, /* use build id in mmap2 events */
|
|
inherit_thread : 1, /* children only inherit if cloned with CLONE_THREAD */
|
|
remove_on_exec : 1, /* event is removed from task on exec */
|
|
sigtrap : 1, /* send synchronous SIGTRAP on event */
|
|
__reserved_1 : 26;
|
|
|
|
union {
|
|
__u32 wakeup_events; /* wakeup every n events */
|
|
__u32 wakeup_watermark; /* bytes before wakeup */
|
|
};
|
|
|
|
__u32 bp_type;
|
|
union {
|
|
__u64 bp_addr;
|
|
__u64 kprobe_func; /* for perf_kprobe */
|
|
__u64 uprobe_path; /* for perf_uprobe */
|
|
__u64 config1; /* extension of config */
|
|
};
|
|
union {
|
|
__u64 bp_len;
|
|
__u64 kprobe_addr; /* when kprobe_func == NULL */
|
|
__u64 probe_offset; /* for perf_[k,u]probe */
|
|
__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;
|
|
__u32 aux_sample_size;
|
|
__u32 __reserved_3;
|
|
|
|
/*
|
|
* User provided data if sigtrap=1, passed back to user via
|
|
* siginfo_t::si_perf_data, e.g. to permit user to identify the event.
|
|
* Note, siginfo_t::si_perf_data is long-sized, and sig_data will be
|
|
* truncated accordingly on 32 bit architectures.
|
|
*/
|
|
__u64 sig_data;
|
|
|
|
__u64 config3; /* extension of config2 */
|
|
};
|
|
|
|
/*
|
|
* Structure used by below PERF_EVENT_IOC_QUERY_BPF command
|
|
* to query bpf programs attached to the same perf tracepoint
|
|
* as the given perf event.
|
|
*/
|
|
struct perf_event_query_bpf {
|
|
/*
|
|
* The below ids array length
|
|
*/
|
|
__u32 ids_len;
|
|
/*
|
|
* Set by the kernel to indicate the number of
|
|
* available programs
|
|
*/
|
|
__u32 prog_cnt;
|
|
/*
|
|
* User provided buffer to store program ids
|
|
*/
|
|
__u32 ids[];
|
|
};
|
|
|
|
/*
|
|
* 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)
|
|
#define PERF_EVENT_IOC_QUERY_BPF _IOWR('$', 10, struct perf_event_query_bpf *)
|
|
#define PERF_EVENT_IOC_MODIFY_ATTRIBUTES _IOW('$', 11, struct perf_event_attr *)
|
|
|
|
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_{shift,mult,offset} fields are used */
|
|
cap_user_time_zero : 1, /* The time_zero field is used */
|
|
cap_user_time_short : 1, /* the time_{cycle,mask} fields are used */
|
|
cap_____res : 58;
|
|
};
|
|
};
|
|
|
|
/*
|
|
* 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. */
|
|
__u32 __reserved_1;
|
|
|
|
/*
|
|
* If cap_usr_time_short, the hardware clock is less than 64bit wide
|
|
* and we must compute the 'cyc' value, as used by cap_usr_time, as:
|
|
*
|
|
* cyc = time_cycles + ((cyc - time_cycles) & time_mask)
|
|
*
|
|
* NOTE: this form is explicitly chosen such that cap_usr_time_short
|
|
* is a correction on top of cap_usr_time, and code that doesn't
|
|
* know about cap_usr_time_short still works under the assumption
|
|
* the counter doesn't wrap.
|
|
*/
|
|
__u64 time_cycles;
|
|
__u64 time_mask;
|
|
|
|
/*
|
|
* Hole for extension of the self monitor capabilities
|
|
*/
|
|
|
|
__u8 __reserved[116*8]; /* 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;
|
|
};
|
|
|
|
/*
|
|
* The current state of perf_event_header::misc bits usage:
|
|
* ('|' used bit, '-' unused bit)
|
|
*
|
|
* 012 CDEF
|
|
* |||---------||||
|
|
*
|
|
* Where:
|
|
* 0-2 CPUMODE_MASK
|
|
*
|
|
* C PROC_MAP_PARSE_TIMEOUT
|
|
* D MMAP_DATA / COMM_EXEC / FORK_EXEC / SWITCH_OUT
|
|
* E MMAP_BUILD_ID / EXACT_IP / SCHED_OUT_PREEMPT
|
|
* F (reserved)
|
|
*/
|
|
|
|
#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)
|
|
/*
|
|
* Following PERF_RECORD_MISC_* are used on different
|
|
* events, so can reuse the same bit position:
|
|
*
|
|
* PERF_RECORD_MISC_MMAP_DATA - PERF_RECORD_MMAP* events
|
|
* PERF_RECORD_MISC_COMM_EXEC - PERF_RECORD_COMM event
|
|
* PERF_RECORD_MISC_FORK_EXEC - PERF_RECORD_FORK event (perf internal)
|
|
* PERF_RECORD_MISC_SWITCH_OUT - PERF_RECORD_SWITCH* events
|
|
*/
|
|
#define PERF_RECORD_MISC_MMAP_DATA (1 << 13)
|
|
#define PERF_RECORD_MISC_COMM_EXEC (1 << 13)
|
|
#define PERF_RECORD_MISC_FORK_EXEC (1 << 13)
|
|
#define PERF_RECORD_MISC_SWITCH_OUT (1 << 13)
|
|
/*
|
|
* These PERF_RECORD_MISC_* flags below are safely reused
|
|
* for the following events:
|
|
*
|
|
* PERF_RECORD_MISC_EXACT_IP - PERF_RECORD_SAMPLE of precise events
|
|
* PERF_RECORD_MISC_SWITCH_OUT_PREEMPT - PERF_RECORD_SWITCH* events
|
|
* PERF_RECORD_MISC_MMAP_BUILD_ID - PERF_RECORD_MMAP2 event
|
|
*
|
|
*
|
|
* PERF_RECORD_MISC_EXACT_IP:
|
|
* Indicates that the content of PERF_SAMPLE_IP points to
|
|
* the actual instruction that triggered the event. See also
|
|
* perf_event_attr::precise_ip.
|
|
*
|
|
* PERF_RECORD_MISC_SWITCH_OUT_PREEMPT:
|
|
* Indicates that thread was preempted in TASK_RUNNING state.
|
|
*
|
|
* PERF_RECORD_MISC_MMAP_BUILD_ID:
|
|
* Indicates that mmap2 event carries build id data.
|
|
*/
|
|
#define PERF_RECORD_MISC_EXACT_IP (1 << 14)
|
|
#define PERF_RECORD_MISC_SWITCH_OUT_PREEMPT (1 << 14)
|
|
#define PERF_RECORD_MISC_MMAP_BUILD_ID (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 hw_idx; } && PERF_SAMPLE_BRANCH_HW_INDEX
|
|
* { 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
|
|
*
|
|
* { union perf_sample_weight
|
|
* {
|
|
* u64 full; && PERF_SAMPLE_WEIGHT
|
|
* #if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
* struct {
|
|
* u32 var1_dw;
|
|
* u16 var2_w;
|
|
* u16 var3_w;
|
|
* } && PERF_SAMPLE_WEIGHT_STRUCT
|
|
* #elif defined(__BIG_ENDIAN_BITFIELD)
|
|
* struct {
|
|
* u16 var3_w;
|
|
* u16 var2_w;
|
|
* u32 var1_dw;
|
|
* } && PERF_SAMPLE_WEIGHT_STRUCT
|
|
* #endif
|
|
* }
|
|
* }
|
|
* { 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
|
|
* { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR
|
|
* { u64 size;
|
|
* char data[size]; } && PERF_SAMPLE_AUX
|
|
* { u64 data_page_size;} && PERF_SAMPLE_DATA_PAGE_SIZE
|
|
* { u64 code_page_size;} && PERF_SAMPLE_CODE_PAGE_SIZE
|
|
* };
|
|
*/
|
|
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;
|
|
* union {
|
|
* struct {
|
|
* u32 maj;
|
|
* u32 min;
|
|
* u64 ino;
|
|
* u64 ino_generation;
|
|
* };
|
|
* struct {
|
|
* u8 build_id_size;
|
|
* u8 __reserved_1;
|
|
* u16 __reserved_2;
|
|
* u8 build_id[20];
|
|
* };
|
|
* };
|
|
* 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;
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
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,
|
|
|
|
/*
|
|
* Record ksymbol register/unregister events:
|
|
*
|
|
* struct {
|
|
* struct perf_event_header header;
|
|
* u64 addr;
|
|
* u32 len;
|
|
* u16 ksym_type;
|
|
* u16 flags;
|
|
* char name[];
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
PERF_RECORD_KSYMBOL = 17,
|
|
|
|
/*
|
|
* Record bpf events:
|
|
* enum perf_bpf_event_type {
|
|
* PERF_BPF_EVENT_UNKNOWN = 0,
|
|
* PERF_BPF_EVENT_PROG_LOAD = 1,
|
|
* PERF_BPF_EVENT_PROG_UNLOAD = 2,
|
|
* };
|
|
*
|
|
* struct {
|
|
* struct perf_event_header header;
|
|
* u16 type;
|
|
* u16 flags;
|
|
* u32 id;
|
|
* u8 tag[BPF_TAG_SIZE];
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
PERF_RECORD_BPF_EVENT = 18,
|
|
|
|
/*
|
|
* struct {
|
|
* struct perf_event_header header;
|
|
* u64 id;
|
|
* char path[];
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
PERF_RECORD_CGROUP = 19,
|
|
|
|
/*
|
|
* Records changes to kernel text i.e. self-modified code. 'old_len' is
|
|
* the number of old bytes, 'new_len' is the number of new bytes. Either
|
|
* 'old_len' or 'new_len' may be zero to indicate, for example, the
|
|
* addition or removal of a trampoline. 'bytes' contains the old bytes
|
|
* followed immediately by the new bytes.
|
|
*
|
|
* struct {
|
|
* struct perf_event_header header;
|
|
* u64 addr;
|
|
* u16 old_len;
|
|
* u16 new_len;
|
|
* u8 bytes[];
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
PERF_RECORD_TEXT_POKE = 20,
|
|
|
|
/*
|
|
* Data written to the AUX area by hardware due to aux_output, may need
|
|
* to be matched to the event by an architecture-specific hardware ID.
|
|
* This records the hardware ID, but requires sample_id to provide the
|
|
* event ID. e.g. Intel PT uses this record to disambiguate PEBS-via-PT
|
|
* records from multiple events.
|
|
*
|
|
* struct {
|
|
* struct perf_event_header header;
|
|
* u64 hw_id;
|
|
* struct sample_id sample_id;
|
|
* };
|
|
*/
|
|
PERF_RECORD_AUX_OUTPUT_HW_ID = 21,
|
|
|
|
PERF_RECORD_MAX, /* non-ABI */
|
|
};
|
|
|
|
enum perf_record_ksymbol_type {
|
|
PERF_RECORD_KSYMBOL_TYPE_UNKNOWN = 0,
|
|
PERF_RECORD_KSYMBOL_TYPE_BPF = 1,
|
|
/*
|
|
* Out of line code such as kprobe-replaced instructions or optimized
|
|
* kprobes or ftrace trampolines.
|
|
*/
|
|
PERF_RECORD_KSYMBOL_TYPE_OOL = 2,
|
|
PERF_RECORD_KSYMBOL_TYPE_MAX /* non-ABI */
|
|
};
|
|
|
|
#define PERF_RECORD_KSYMBOL_FLAGS_UNREGISTER (1 << 0)
|
|
|
|
enum perf_bpf_event_type {
|
|
PERF_BPF_EVENT_UNKNOWN = 0,
|
|
PERF_BPF_EVENT_PROG_LOAD = 1,
|
|
PERF_BPF_EVENT_PROG_UNLOAD = 2,
|
|
PERF_BPF_EVENT_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_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */
|
|
#define PERF_AUX_FLAG_COLLISION 0x08 /* sample collided with another */
|
|
#define PERF_AUX_FLAG_PMU_FORMAT_TYPE_MASK 0xff00 /* PMU specific trace format type */
|
|
|
|
/* CoreSight PMU AUX buffer formats */
|
|
#define PERF_AUX_FLAG_CORESIGHT_FORMAT_CORESIGHT 0x0000 /* Default for backward compatibility */
|
|
#define PERF_AUX_FLAG_CORESIGHT_FORMAT_RAW 0x0100 /* Raw format of the source */
|
|
|
|
#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 */
|
|
|
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
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_lvl_num:4, /* memory hierarchy level number */
|
|
mem_remote:1, /* remote */
|
|
mem_snoopx:2, /* snoop mode, ext */
|
|
mem_blk:3, /* access blocked */
|
|
mem_hops:3, /* hop level */
|
|
mem_rsvd:18;
|
|
};
|
|
};
|
|
#elif defined(__BIG_ENDIAN_BITFIELD)
|
|
union perf_mem_data_src {
|
|
__u64 val;
|
|
struct {
|
|
__u64 mem_rsvd:18,
|
|
mem_hops:3, /* hop level */
|
|
mem_blk:3, /* access blocked */
|
|
mem_snoopx:2, /* snoop mode, ext */
|
|
mem_remote:1, /* remote */
|
|
mem_lvl_num:4, /* memory hierarchy level number */
|
|
mem_dtlb:7, /* tlb access */
|
|
mem_lock:2, /* lock instr */
|
|
mem_snoop:5, /* snoop mode */
|
|
mem_lvl:14, /* memory hierarchy level */
|
|
mem_op:5; /* type of opcode */
|
|
};
|
|
};
|
|
#else
|
|
#error "Unknown endianness"
|
|
#endif
|
|
|
|
/* 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
|
|
|
|
/*
|
|
* PERF_MEM_LVL_* namespace being depricated to some extent in the
|
|
* favour of newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_} fields.
|
|
* Supporting this namespace inorder to not break defined ABIs.
|
|
*
|
|
* 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
|
|
|
|
#define PERF_MEM_REMOTE_REMOTE 0x01 /* Remote */
|
|
#define PERF_MEM_REMOTE_SHIFT 37
|
|
|
|
#define PERF_MEM_LVLNUM_L1 0x01 /* L1 */
|
|
#define PERF_MEM_LVLNUM_L2 0x02 /* L2 */
|
|
#define PERF_MEM_LVLNUM_L3 0x03 /* L3 */
|
|
#define PERF_MEM_LVLNUM_L4 0x04 /* L4 */
|
|
/* 5-0x8 available */
|
|
#define PERF_MEM_LVLNUM_CXL 0x09 /* CXL */
|
|
#define PERF_MEM_LVLNUM_IO 0x0a /* I/O */
|
|
#define PERF_MEM_LVLNUM_ANY_CACHE 0x0b /* Any cache */
|
|
#define PERF_MEM_LVLNUM_LFB 0x0c /* LFB */
|
|
#define PERF_MEM_LVLNUM_RAM 0x0d /* RAM */
|
|
#define PERF_MEM_LVLNUM_PMEM 0x0e /* PMEM */
|
|
#define PERF_MEM_LVLNUM_NA 0x0f /* N/A */
|
|
|
|
#define PERF_MEM_LVLNUM_SHIFT 33
|
|
|
|
/* 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
|
|
|
|
#define PERF_MEM_SNOOPX_FWD 0x01 /* forward */
|
|
#define PERF_MEM_SNOOPX_PEER 0x02 /* xfer from peer */
|
|
#define PERF_MEM_SNOOPX_SHIFT 38
|
|
|
|
/* 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
|
|
|
|
/* Access blocked */
|
|
#define PERF_MEM_BLK_NA 0x01 /* not available */
|
|
#define PERF_MEM_BLK_DATA 0x02 /* data could not be forwarded */
|
|
#define PERF_MEM_BLK_ADDR 0x04 /* address conflict */
|
|
#define PERF_MEM_BLK_SHIFT 40
|
|
|
|
/* hop level */
|
|
#define PERF_MEM_HOPS_0 0x01 /* remote core, same node */
|
|
#define PERF_MEM_HOPS_1 0x02 /* remote node, same socket */
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|
#define PERF_MEM_HOPS_2 0x03 /* remote socket, same board */
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|
#define PERF_MEM_HOPS_3 0x04 /* remote board */
|
|
/* 5-7 available */
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|
#define PERF_MEM_HOPS_SHIFT 43
|
|
|
|
#define PERF_MEM_S(a, s) \
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|
(((__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)
|
|
* type: branch type
|
|
* spec: branch speculation info (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 */
|
|
type:4, /* branch type */
|
|
spec:2, /* branch speculation info */
|
|
new_type:4, /* additional branch type */
|
|
priv:3, /* privilege level */
|
|
reserved:31;
|
|
};
|
|
|
|
union perf_sample_weight {
|
|
__u64 full;
|
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
struct {
|
|
__u32 var1_dw;
|
|
__u16 var2_w;
|
|
__u16 var3_w;
|
|
};
|
|
#elif defined(__BIG_ENDIAN_BITFIELD)
|
|
struct {
|
|
__u16 var3_w;
|
|
__u16 var2_w;
|
|
__u32 var1_dw;
|
|
};
|
|
#else
|
|
#error "Unknown endianness"
|
|
#endif
|
|
};
|
|
|
|
#endif /* _UAPI_LINUX_PERF_EVENT_H */
|