tegrakernel/kernel/nvidia/include/uapi/linux/tegra_profiler.h

680 lines
15 KiB
C

/*
* include/uapi/linux/tegra_profiler.h
*
* Copyright (c) 2013-2020, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef __UAPI_TEGRA_PROFILER_H
#define __UAPI_TEGRA_PROFILER_H
#include <linux/ioctl.h>
#include <linux/types.h>
#define QUADD_SAMPLES_VERSION 49
#define QUADD_IO_VERSION 28
#define QUADD_IO_VERSION_DYNAMIC_RB 5
#define QUADD_IO_VERSION_RB_MAX_FILL_COUNT 6
#define QUADD_IO_VERSION_MOD_STATE_STATUS_FIELD 7
#define QUADD_IO_VERSION_BT_KERNEL_CTX 8
#define QUADD_IO_VERSION_GET_MMAP 9
#define QUADD_IO_VERSION_BT_UNWIND_TABLES 10
#define QUADD_IO_VERSION_UNWIND_MIXED 11
#define QUADD_IO_VERSION_EXTABLES_MMAP 12
#define QUADD_IO_VERSION_ARCH_TIMER_OPT 13
#define QUADD_IO_VERSION_DATA_MMAP 14
#define QUADD_IO_VERSION_BT_LOWER_BOUND 15
#define QUADD_IO_VERSION_STACK_OFFSET 16
#define QUADD_IO_VERSION_SECTIONS_INFO 17
#define QUADD_IO_VERSION_UNW_METHODS_OPT 18
#define QUADD_IO_VERSION_PER_CPU_SETUP 19
#define QUADD_IO_VERSION_TRACE_ALL_TASKS 20
#define QUADD_IO_VERSION_CB_POWER_OF_2 21
#define QUADD_IO_VERSION_RAW_EVENTS 22
#define QUADD_IO_VERSION_SAMPLING_MODE 23
#define QUADD_IO_VERSION_FORCE_ARCH_TIMER 24
#define QUADD_IO_VERSION_SAMPLE_ALL_TASKS 25
#define QUADD_IO_VERSION_EXTABLES_PID 26
#define QUADD_IO_VERSION_SAMPLING_CNTRL 27
#define QUADD_IO_VERSION_UNCORE_EVENTS 28
#define QUADD_SAMPLE_VERSION_THUMB_MODE_FLAG 17
#define QUADD_SAMPLE_VERSION_GROUP_SAMPLES 18
#define QUADD_SAMPLE_VERSION_THREAD_STATE_FLD 19
#define QUADD_SAMPLE_VERSION_BT_UNWIND_TABLES 22
#define QUADD_SAMPLE_VERSION_SUPPORT_IP64 23
#define QUADD_SAMPLE_VERSION_SPECIAL_MMAP 24
#define QUADD_SAMPLE_VERSION_UNWIND_MIXED 25
#define QUADD_SAMPLE_VERSION_UNW_ENTRY_TYPE 26
#define QUADD_SAMPLE_VERSION_USE_ARCH_TIMER 27
#define QUADD_SAMPLE_VERSION_SCHED_SAMPLES 28
#define QUADD_SAMPLE_VERSION_HDR_UNW_METHOD 29
#define QUADD_SAMPLE_VERSION_HDR_ARCH_TIMER 30
#define QUADD_SAMPLE_VERSION_STACK_OFFSET 31
#define QUADD_SAMPLE_VERSION_SCHED_TASK_STATE 32
#define QUADD_SAMPLE_VERSION_URCS 33
#define QUADD_SAMPLE_VERSION_HOTPLUG 34
#define QUADD_SAMPLE_VERSION_PER_CPU_SETUP 35
#define QUADD_SAMPLE_VERSION_REPORT_TGID 36
#define QUADD_SAMPLE_VERSION_MMAP_TS 37
#define QUADD_SAMPLE_VERSION_RAW_EVENTS 38
#define QUADD_SAMPLE_VERSION_OVERHEAD_INFO 39
#define QUADD_SAMPLE_VERSION_REPORT_VPID 40
#define QUADD_SAMPLE_VERSION_SCHED_REPORT_VPID 41
#define QUADD_SAMPLE_VERSION_SAMPLING_MODE 42
#define QUADD_SAMPLE_VERSION_SAMPLE_ALL_TASKS 43
#define QUADD_SAMPLE_VERSION_KTHREAD_TSK_FLAG 44
#define QUADD_SAMPLE_VERSION_MMAP_CPUID 45
#define QUADD_SAMPLE_VERSION_PCLK_SEND_CHANGES 46
#define QUADD_SAMPLE_VERSION_COMM_SAMPLES 47
#define QUADD_SAMPLE_VERSION_UNCORE_EVENTS 48
#define QUADD_SAMPLE_VERSION_SEQID 49
#define QUADD_MMAP_HEADER_VERSION 1
#define QUADD_MAX_COUNTERS 32
#define QUADD_MAX_PROCESS 64
#define QUADD_DEVICE_NAME "quadd"
#define QUADD_AUTH_DEVICE_NAME "quadd_auth"
#define QUADD_MOD_DEVICE_NAME "quadd_mod"
#define QUADD_MOD_AUTH_DEVICE_NAME "quadd_mod_auth"
#define QUADD_IOCTL 100
/*
* Setup params (profiling frequency, etc.)
*/
#define IOCTL_SETUP _IOW(QUADD_IOCTL, 0, struct quadd_parameters)
/*
* Start profiling.
*/
#define IOCTL_START _IO(QUADD_IOCTL, 1)
/*
* Stop profiling.
*/
#define IOCTL_STOP _IO(QUADD_IOCTL, 2)
/*
* Getting capabilities
*/
#define IOCTL_GET_CAP _IOR(QUADD_IOCTL, 3, struct quadd_comm_cap)
/*
* Getting state of module
*/
#define IOCTL_GET_STATE _IOR(QUADD_IOCTL, 4, struct quadd_module_state)
/*
* Getting version of module
*/
#define IOCTL_GET_VERSION _IOR(QUADD_IOCTL, 5, struct quadd_module_version)
/*
* Send exception-handling tables info
* This ioctl is obsolete
*/
/*#define IOCTL_SET_EXTAB _IOW(QUADD_IOCTL, 6, struct quadd_extables)*/
/*
* Send ring buffer mmap info
*/
#define IOCTL_SET_MMAP_RB _IOW(QUADD_IOCTL, 7, struct quadd_mmap_rb_info)
/*
* Send sections info
*/
#define IOCTL_SET_SECTIONS_INFO _IOW(QUADD_IOCTL, 8, struct quadd_sections)
/*
* Per CPU PMU setup
*/
#define IOCTL_SETUP_PMU_FOR_CPU _IOW(QUADD_IOCTL, 9,\
struct quadd_pmu_setup_for_cpu)
/*
* Per CPU capabilities
*/
#define IOCTL_GET_CAP_FOR_CPU _IOWR(QUADD_IOCTL, 10,\
struct quadd_comm_cap_for_cpu)
#define QUADD_CPUMODE_TEGRA_POWER_CLUSTER_LP (1 << 29) /* LP CPU */
#define QUADD_CPUMODE_THUMB (1 << 30) /* thumb mode */
enum quadd_events_id {
QUADD_EVENT_HW_CPU_CYCLES = 0,
QUADD_EVENT_HW_INSTRUCTIONS,
QUADD_EVENT_HW_BRANCH_INSTRUCTIONS,
QUADD_EVENT_HW_BRANCH_MISSES,
QUADD_EVENT_HW_BUS_CYCLES,
QUADD_EVENT_HW_L1_DCACHE_READ_MISSES,
QUADD_EVENT_HW_L1_DCACHE_WRITE_MISSES,
QUADD_EVENT_HW_L1_ICACHE_MISSES,
QUADD_EVENT_HW_L2_DCACHE_READ_MISSES,
QUADD_EVENT_HW_L2_DCACHE_WRITE_MISSES,
QUADD_EVENT_HW_L2_ICACHE_MISSES,
QUADD_EVENT_HW_MAX,
};
enum quadd_record_type {
QUADD_RECORD_TYPE_SAMPLE = 1,
QUADD_RECORD_TYPE_MMAP,
QUADD_RECORD_TYPE_MA,
QUADD_RECORD_TYPE_COMM,
QUADD_RECORD_TYPE_DEBUG,
QUADD_RECORD_TYPE_HEADER,
QUADD_RECORD_TYPE_POWER_RATE,
QUADD_RECORD_TYPE_ADDITIONAL_SAMPLE,
QUADD_RECORD_TYPE_SCHED,
QUADD_RECORD_TYPE_HOTPLUG,
};
enum quadd_event_source_type {
QUADD_EVENT_SOURCE_PMU = 1,
QUADD_EVENT_SOURCE_PL310,
QUADD_EVENT_SOURCE_CARMEL_UNCORE_PMU,
};
enum quadd_cpu_mode {
QUADD_CPU_MODE_KERNEL = 1,
QUADD_CPU_MODE_USER,
QUADD_CPU_MODE_NONE,
};
#pragma pack(push, 1)
#define QUADD_SAMPLE_URC_MASK 0xff
#define QUADD_SAMPLE_URC_SHIFT_FP 0
#define QUADD_SAMPLE_URC_SHIFT_UT (1 * 8)
#define QUADD_SAMPLE_URC_SHIFT_DWARF (2 * 8)
enum {
QUADD_URC_SUCCESS = 0,
QUADD_URC_FAILURE,
QUADD_URC_IDX_NOT_FOUND,
QUADD_URC_TBL_NOT_EXIST,
QUADD_URC_EACCESS,
QUADD_URC_TBL_IS_CORRUPT,
QUADD_URC_CANTUNWIND,
QUADD_URC_UNHANDLED_INSTRUCTION,
QUADD_URC_REFUSE_TO_UNWIND,
QUADD_URC_SP_INCORRECT,
QUADD_URC_SPARE_ENCODING,
QUADD_URC_UNSUPPORTED_PR,
QUADD_URC_PC_INCORRECT,
QUADD_URC_LEVEL_TOO_DEEP,
QUADD_URC_FP_INCORRECT,
QUADD_URC_NONE,
QUADD_URC_UNWIND_MISMATCH,
QUADD_URC_TBL_LINK_INCORRECT,
QUADD_URC_MAX,
};
#define QUADD_SED_STACK_OFFSET_SHIFT 1
#define QUADD_SED_STACK_OFFSET_MASK (0xffff << QUADD_SED_STACK_OFFSET_SHIFT)
enum {
QUADD_UNW_TYPE_FP = 0,
QUADD_UNW_TYPE_UT,
QUADD_UNW_TYPE_LR_FP,
QUADD_UNW_TYPE_LR_UT,
QUADD_UNW_TYPE_KCTX,
QUADD_UNW_TYPE_DWARF_EH,
QUADD_UNW_TYPE_DWARF_DF,
};
#define QUADD_SAMPLE_FLAG_USER_MODE (1 << 0)
#define QUADD_SAMPLE_FLAG_LP_MODE (1 << 1)
#define QUADD_SAMPLE_FLAG_THUMB_MODE (1 << 2)
#define QUADD_SAMPLE_FLAG_STATE (1 << 3)
#define QUADD_SAMPLE_FLAG_IN_INTERRUPT (1 << 4)
#define QUADD_SAMPLE_FLAG_IS_VPID (1 << 5)
#define QUADD_SAMPLE_FLAG_PF_KTHREAD (1 << 6)
#define QUADD_SAMPLE_FLAG_URCS (1 << 7)
#define QUADD_SAMPLE_FLAG_IP64 (1 << 8)
#define QUADD_SAMPLE_FLAG_UNCORE (1 << 9)
struct quadd_sample_data {
__u64 ip;
__u32 pid;
__u32 tgid;
__u64 time;
__u8 cpu_id;
__u32 flags;
__u8 callchain_nr;
__u32 events_flags;
};
#define QUADD_MMAP_FLAG_LP_MODE (1 << 0)
#define QUADD_MMAP_FLAG_USER_MODE (1 << 1)
#define QUADD_MMAP_FLAG_IS_FILE_EXISTS (1 << 2)
struct quadd_mmap_data {
__u32 pid;
__u64 time;
__u8 cpu_id;
__u16 flags;
__u64 addr;
__u64 len;
__u16 filename_length;
};
struct quadd_ma_data {
__u32 pid;
__u64 time;
__u32 vm_size;
__u32 rss_size;
};
enum {
QUADD_POWER_CLK_CPU = 1,
QUADD_POWER_CLK_GPU,
QUADD_POWER_CLK_EMC,
};
struct quadd_power_rate_data {
__u8 type;
__u64 time;
__u32 cpu_id;
__u16 nr_values;
__u32 flags;
};
struct quadd_hotplug_data {
__u64 time;
__u32 cpu;
__u32 is_online:1,
reserved:31;
};
struct quadd_additional_sample {
__u8 type;
__u32 values[6];
__u16 extra_length;
};
#define QUADD_SCHED_FLAG_LP_MODE (1ULL << 0)
#define QUADD_SCHED_FLAG_SCHED_IN (1ULL << 1)
#define QUADD_SCHED_FLAG_IS_VPID (1ULL << 2)
#define QUADD_SCHED_FLAG_PF_KTHREAD (1ULL << 3)
struct quadd_sched_data {
__u32 pid;
__u32 tgid;
__u64 time;
__u8 cpu_id;
__u64 flags;
__u16 task_state;
};
enum {
QM_DEBUG_SAMPLE_TYPE_SCHED_IN = 1,
QM_DEBUG_SAMPLE_TYPE_SCHED_OUT,
QM_DEBUG_SAMPLE_TYPE_TIMER_HANDLE,
QM_DEBUG_SAMPLE_TYPE_TIMER_START,
QM_DEBUG_SAMPLE_TYPE_TIMER_CANCEL,
QM_DEBUG_SAMPLE_TYPE_TIMER_FORWARD,
QM_DEBUG_SAMPLE_TYPE_READ_COUNTER,
QM_DEBUG_SAMPLE_TYPE_SOURCE_START,
QM_DEBUG_SAMPLE_TYPE_SOURCE_STOP,
};
#define QUADD_COMM_FLAG_EXEC (1U << 0)
struct quadd_comm_data {
__u32 pid;
__u32 tgid;
__u64 time;
__u16 length;
__u32 flags;
};
struct quadd_debug_data {
__u8 type;
__u32 pid;
__u64 time;
__u16 cpu:6,
user_mode:1,
lp_mode:1,
thumb_mode:1,
reserved:7;
__u32 extra_value[2];
__u16 extra_length;
};
#define QUADD_HEADER_MAGIC 0x1122
#define QUADD_HDR_FLAG_BACKTRACE (1ULL << 0)
#define QUADD_HDR_FLAG_USE_FREQ (1ULL << 1)
#define QUADD_HDR_FLAG_POWER_RATE (1ULL << 2)
#define QUADD_HDR_FLAG_DEBUG_SAMPLES (1ULL << 3)
#define QUADD_HDR_FLAG_GET_MMAP (1ULL << 4)
#define QUADD_HDR_FLAG_BT_FP (1ULL << 5)
#define QUADD_HDR_FLAG_BT_UT (1ULL << 6)
#define QUADD_HDR_FLAG_BT_UT_CE (1ULL << 7)
#define QUADD_HDR_FLAG_BT_DWARF (1ULL << 8)
#define QUADD_HDR_FLAG_USE_ARCH_TIMER (1ULL << 9)
#define QUADD_HDR_FLAG_STACK_OFFSET (1ULL << 10)
#define QUADD_HDR_FLAG_HAS_CPUID (1ULL << 11)
#define QUADD_HDR_FLAG_MODE_SAMPLING (1ULL << 12)
#define QUADD_HDR_FLAG_MODE_TRACING (1ULL << 13)
#define QUADD_HDR_FLAG_MODE_SAMPLE_ALL (1ULL << 14)
#define QUADD_HDR_FLAG_MODE_TRACE_ALL (1ULL << 15)
#define QUADD_HDR_FLAG_MODE_SAMPLE_TREE (1ULL << 16)
#define QUADD_HDR_FLAG_MODE_TRACE_TREE (1ULL << 17)
#define QUADD_HDR_FLAG_CPUFREQ (1ULL << 18)
#define QUADD_HDR_FLAG_UNCORE (1ULL << 19)
struct quadd_header_data {
__u16 magic;
__u64 time;
__u16 samples_version;
__u16 io_version;
__u8 cpu_id;
__u64 flags;
__u32 freq;
__u16 ma_freq;
__u16 power_rate_freq;
__u8 nr_events;
__u16 extra_length;
};
struct quadd_record_data {
__u8 record_type;
__u16 extra_size;
__u32 seqid;
/* sample: it should be the biggest size */
union {
struct quadd_sample_data sample;
struct quadd_mmap_data mmap;
struct quadd_ma_data ma;
struct quadd_debug_data debug;
struct quadd_header_data hdr;
struct quadd_power_rate_data power_rate;
struct quadd_hotplug_data hotplug;
struct quadd_sched_data sched;
struct quadd_comm_data comm;
struct quadd_additional_sample additional_sample;
};
} __aligned(4);
#pragma pack(4)
#define QUADD_MAX_PACKAGE_NAME 320
enum {
QUADD_PARAM_IDX_SIZE_OF_RB = 0,
QUADD_PARAM_IDX_EXTRA = 1,
QUADD_PARAM_IDX_BT_LOWER_BOUND = 2,
QUADD_PARAM_IDX_UNCORE_FREQ = 4,
};
#define QUADD_PARAM_EXTRA_GET_MMAP (1 << 0)
#define QUADD_PARAM_EXTRA_BT_FP (1 << 1)
#define QUADD_PARAM_EXTRA_BT_UT (1 << 2)
#define QUADD_PARAM_EXTRA_BT_MIXED (1 << 3)
#define QUADD_PARAM_EXTRA_USE_ARCH_TIMER (1 << 4)
#define QUADD_PARAM_EXTRA_STACK_OFFSET (1 << 5)
#define QUADD_PARAM_EXTRA_BT_UT_CE (1 << 6)
#define QUADD_PARAM_EXTRA_BT_DWARF (1 << 7)
#define QUADD_PARAM_EXTRA_PER_PMU_SETUP (1 << 8)
#define QUADD_PARAM_EXTRA_SAMPLING (1 << 9)
#define QUADD_PARAM_EXTRA_FORCE_ARCH_TIMER (1 << 10)
#define QUADD_PARAM_EXTRA_SAMPLE_ALL_TASKS (1 << 11)
#define QUADD_PARAM_EXTRA_SAMPLE_TREE (1 << 12)
#define QUADD_PARAM_EXTRA_TRACING (1 << 13)
#define QUADD_PARAM_EXTRA_TRACE_TREE (1 << 14)
#define QUADD_PARAM_EXTRA_SAMPLING_TIMER (1 << 15)
#define QUADD_PARAM_EXTRA_SAMPLING_SCHED_OUT (1 << 16)
enum {
QUADD_EVENT_TYPE_RAW = 0,
QUADD_EVENT_TYPE_HARDWARE = 1,
QUADD_EVENT_TYPE_RAW_CARMEL_UNCORE = 2,
QUADD_EVENT_TYPE_MAX,
};
struct quadd_event {
__u32 type;
__u32 id;
};
struct quadd_parameters {
__u32 freq;
__u32 ma_freq;
__u32 power_rate_freq;
__u64 backtrace:1,
use_freq:1,
system_wide:1,
debug_samples:1,
trace_all_tasks:1;
__u32 pids[QUADD_MAX_PROCESS];
__u32 nr_pids;
__u8 package_name[QUADD_MAX_PACKAGE_NAME];
struct quadd_event events[QUADD_MAX_COUNTERS];
__u32 nr_events;
__u32 reserved[16]; /* reserved fields for future extensions */
};
struct quadd_pmu_setup_for_cpu {
__u32 cpuid;
struct quadd_event events[QUADD_MAX_COUNTERS];
__u32 nr_events;
__u32 reserved[16];
};
struct quadd_events_cap {
__u32 cpu_cycles:1,
instructions:1,
branch_instructions:1,
branch_misses:1,
bus_cycles:1,
l1_dcache_read_misses:1,
l1_dcache_write_misses:1,
l1_icache_misses:1,
l2_dcache_read_misses:1,
l2_dcache_write_misses:1,
l2_icache_misses:1;
__u32 raw_event_mask;
};
enum {
QUADD_COMM_CAP_IDX_EXTRA = 0,
QUADD_COMM_CAP_IDX_CPU_MASK = 1,
};
#define QUADD_COMM_CAP_EXTRA_BT_KERNEL_CTX (1 << 0)
#define QUADD_COMM_CAP_EXTRA_GET_MMAP (1 << 1)
#define QUADD_COMM_CAP_EXTRA_GROUP_SAMPLES (1 << 2)
#define QUADD_COMM_CAP_EXTRA_BT_UNWIND_TABLES (1 << 3)
#define QUADD_COMM_CAP_EXTRA_SUPPORT_AARCH64 (1 << 4)
#define QUADD_COMM_CAP_EXTRA_SPECIAL_ARCH_MMAP (1 << 5)
#define QUADD_COMM_CAP_EXTRA_UNWIND_MIXED (1 << 6)
#define QUADD_COMM_CAP_EXTRA_UNW_ENTRY_TYPE (1 << 7)
#define QUADD_COMM_CAP_EXTRA_ARCH_TIMER (1 << 8)
#define QUADD_COMM_CAP_EXTRA_RB_MMAP_OP (1 << 9)
#define QUADD_COMM_CAP_EXTRA_CPU_MASK (1 << 10)
#define QUADD_COMM_CAP_EXTRA_ARCH_TIMER_USR (1 << 11)
#define QUADD_COMM_CAP_EXTRA_CPUFREQ (1 << 12)
struct quadd_comm_cap {
__u32 pmu:1,
power_rate:1,
l2_cache:1,
l2_multiple_events:1,
tegra_lp_cluster:1,
blocked_read:1;
struct quadd_events_cap events_cap; /* Deprecated. */
__u32 reserved[16]; /* reserved fields for future extensions */
};
struct quadd_comm_cap_for_cpu {
__u32 l2_cache:1,
l2_multiple_events:1;
__u8 cpuid;
struct quadd_events_cap events_cap;
};
enum {
QUADD_MOD_STATE_IDX_RB_MAX_FILL_COUNT = 0,
QUADD_MOD_STATE_IDX_STATUS,
};
#define QUADD_MOD_STATE_STATUS_IS_ACTIVE (1 << 0)
#define QUADD_MOD_STATE_STATUS_IS_AUTH_OPEN (1 << 1)
struct quadd_module_state {
__u64 nr_all_samples;
__u64 nr_skipped_samples;
__u32 buffer_size;
__u32 buffer_fill_size;
__u32 reserved[16]; /* reserved fields for future extensions */
};
struct quadd_module_version {
__u8 branch[32];
__u8 version[16];
__u32 samples_version;
__u32 io_version;
__u32 reserved[4]; /* reserved fields for future extensions */
};
enum {
QUADD_SEC_TYPE_EXTAB = 0,
QUADD_SEC_TYPE_EXIDX,
QUADD_SEC_TYPE_EH_FRAME,
QUADD_SEC_TYPE_EH_FRAME_HDR,
QUADD_SEC_TYPE_DEBUG_FRAME,
QUADD_SEC_TYPE_DEBUG_FRAME_HDR,
QUADD_SEC_TYPE_MAX,
};
struct quadd_sec_info {
__u64 addr;
__u64 length;
__u64 mmap_offset;
};
#define QUADD_SECTIONS_FLAG_IS_SHARED (1ULL << 0)
struct quadd_sections {
__u64 vm_start;
__u64 vm_end;
struct quadd_sec_info sec[QUADD_SEC_TYPE_MAX];
__u64 user_mmap_start;
__u32 file_hash;
__u32 pid;
__u64 flags;
};
struct quadd_mmap_rb_info {
__u32 cpu_id;
__u64 vm_start;
__u64 vm_end;
__u32 reserved[4]; /* reserved fields for future extensions */
};
#define QUADD_MMAP_HEADER_MAGIC 0x33445566
struct quadd_mmap_header {
__u32 magic;
__u32 version;
__u32 cpu_id;
__u32 samples_version;
__u32 reserved[4]; /* reserved fields for future extensions */
} __aligned(8);
enum {
QUADD_RB_STATE_NONE = 0,
QUADD_RB_STATE_ACTIVE,
QUADD_RB_STATE_STOPPED,
};
struct quadd_ring_buffer_hdr {
__u32 state;
__u32 size;
__u32 pos_read;
__u32 pos_write;
__u32 max_fill_count;
__u32 skipped_samples;
__u32 reserved[4]; /* reserved fields for future extensions */
} __aligned(8);
#pragma pack(pop)
#endif /* __UAPI_TEGRA_PROFILER_H */