+struct lttng_kernel_abi_counter_dimension {
+ uint64_t size;
+ uint64_t underflow_index;
+ uint64_t overflow_index;
+ uint8_t has_underflow;
+ uint8_t has_overflow;
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_COUNTER_CONF_PADDING1 67
+struct lttng_kernel_abi_counter_conf {
+ uint32_t arithmetic; /* enum lttng_kernel_abi_counter_arithmetic */
+ uint32_t bitness; /* enum lttng_kernel_abi_counter_bitness */
+ uint32_t number_dimensions;
+ int64_t global_sum_step;
+ struct lttng_kernel_abi_counter_dimension dimensions[LTTNG_KERNEL_ABI_COUNTER_DIMENSION_MAX];
+ uint8_t coalesce_hits;
+ char padding[LTTNG_KERNEL_ABI_COUNTER_CONF_PADDING1];
+} LTTNG_PACKED;
+
+struct lttng_kernel_abi_counter_index {
+ uint32_t number_dimensions;
+ uint64_t dimension_indexes[LTTNG_KERNEL_ABI_COUNTER_DIMENSION_MAX];
+} LTTNG_PACKED;
+
+struct lttng_kernel_abi_counter_value {
+ int64_t value;
+ uint8_t underflow;
+ uint8_t overflow;
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_COUNTER_READ_PADDING 32
+struct lttng_kernel_abi_counter_read {
+ struct lttng_kernel_abi_counter_index index;
+ int32_t cpu; /* -1 for global counter, >= 0 for specific cpu. */
+ struct lttng_kernel_abi_counter_value value; /* output */
+ char padding[LTTNG_KERNEL_ABI_COUNTER_READ_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_COUNTER_AGGREGATE_PADDING 32
+struct lttng_kernel_abi_counter_aggregate {
+ struct lttng_kernel_abi_counter_index index;
+ struct lttng_kernel_abi_counter_value value; /* output */
+ char padding[LTTNG_KERNEL_ABI_COUNTER_AGGREGATE_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_COUNTER_CLEAR_PADDING 32
+struct lttng_kernel_abi_counter_clear {
+ struct lttng_kernel_abi_counter_index index;
+ char padding[LTTNG_KERNEL_ABI_COUNTER_CLEAR_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_EVENT_NOTIFIER_NOTIFICATION_PADDING 32
+struct lttng_kernel_abi_event_notifier_notification {
+ uint64_t token;
+ uint16_t capture_buf_size;
+ char padding[LTTNG_KERNEL_ABI_EVENT_NOTIFIER_NOTIFICATION_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_ABI_CAPTURE_BYTECODE_MAX_LEN 65536
+struct lttng_kernel_abi_capture_bytecode {
+ uint32_t len;
+ uint32_t reloc_offset;
+ uint64_t seqnum;
+ char data[0];
+} LTTNG_PACKED;
+
+struct lttng_kernel_abi_tracer_version {
+ uint32_t major;
+ uint32_t minor;
+ uint32_t patchlevel;
+} LTTNG_PACKED;
+
+struct lttng_kernel_abi_tracer_abi_version {
+ uint32_t major;
+ uint32_t minor;
+} LTTNG_PACKED;
+
+struct lttng_kernel_abi_syscall_mask {
+ uint32_t len; /* in bits */
+ char mask[];
+} LTTNG_PACKED;
+
+/*
+ * kernel channel
+ */
+#define LTTNG_KERNEL_ABI_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
+struct lttng_kernel_abi_channel {
+ uint64_t subbuf_size; /* bytes */
+ uint64_t num_subbuf; /* power of 2 */
+ unsigned int switch_timer_interval; /* usec */
+ unsigned int read_timer_interval; /* usec */
+ enum lttng_event_output output; /* splice, mmap */
+
+ int overwrite; /* 1: overwrite, 0: discard */
+ char padding[LTTNG_KERNEL_ABI_CHANNEL_PADDING1];
+} LTTNG_PACKED;
+
+#define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
+struct lttng_kernel_abi_filter_bytecode {
+ uint32_t len;
+ uint32_t reloc_offset;
+ uint64_t seqnum;
+ char data[0];
+} LTTNG_PACKED;
+
+/*
+ * kernel session name
+ */
+struct lttng_kernel_abi_session_name {
+ char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN];
+} LTTNG_PACKED;
+
+/*
+ * kernel session creation datetime
+ */
+struct lttng_kernel_abi_session_creation_time {
+ char iso8601[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN];
+} LTTNG_PACKED;
+
+enum lttng_kernel_abi_tracker_type {
+ LTTNG_KERNEL_ABI_TRACKER_UNKNOWN = -1,
+
+ LTTNG_KERNEL_ABI_TRACKER_PID = 0,
+ LTTNG_KERNEL_ABI_TRACKER_VPID = 1,
+ LTTNG_KERNEL_ABI_TRACKER_UID = 2,
+ LTTNG_KERNEL_ABI_TRACKER_VUID = 3,
+ LTTNG_KERNEL_ABI_TRACKER_GID = 4,
+ LTTNG_KERNEL_ABI_TRACKER_VGID = 5,