+++ /dev/null
-#ifndef _LTTNG_ABI_H
-#define _LTTNG_ABI_H
-
-/*
- * lttng-abi.h
- *
- * LTTng ABI header
- *
- * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/fs.h>
-
-/*
- * Major/minor version of ABI exposed to lttng tools. Major number
- * should be increased when an incompatible ABI change is done.
- */
-#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
-#define LTTNG_MODULES_ABI_MINOR_VERSION 0
-
-#define LTTNG_KERNEL_SYM_NAME_LEN 256
-
-enum lttng_kernel_instrumentation {
- LTTNG_KERNEL_TRACEPOINT = 0,
- LTTNG_KERNEL_KPROBE = 1,
- LTTNG_KERNEL_FUNCTION = 2,
- LTTNG_KERNEL_KRETPROBE = 3,
- LTTNG_KERNEL_NOOP = 4, /* not hooked */
- LTTNG_KERNEL_SYSCALL = 5,
-};
-
-/*
- * LTTng consumer mode
- */
-enum lttng_kernel_output {
- LTTNG_KERNEL_SPLICE = 0,
- LTTNG_KERNEL_MMAP = 1,
-};
-
-/*
- * LTTng DebugFS ABI structures.
- */
-#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
-struct lttng_kernel_channel {
- uint64_t subbuf_size; /* in bytes */
- uint64_t num_subbuf;
- unsigned int switch_timer_interval; /* usecs */
- unsigned int read_timer_interval; /* usecs */
- enum lttng_kernel_output output; /* splice, mmap */
- int overwrite; /* 1: overwrite, 0: discard */
- char padding[LTTNG_KERNEL_CHANNEL_PADDING];
-} __attribute__((packed));
-
-struct lttng_kernel_kretprobe {
- uint64_t addr;
-
- uint64_t offset;
- char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-} __attribute__((packed));
-
-/*
- * Either addr is used, or symbol_name and offset.
- */
-struct lttng_kernel_kprobe {
- uint64_t addr;
-
- uint64_t offset;
- char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-} __attribute__((packed));
-
-struct lttng_kernel_function_tracer {
- char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-} __attribute__((packed));
-
-/*
- * For syscall tracing, name = "*" means "enable all".
- */
-#define LTTNG_KERNEL_EVENT_PADDING1 16
-#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
-struct lttng_kernel_event {
- char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
- enum lttng_kernel_instrumentation instrumentation;
- char padding[LTTNG_KERNEL_EVENT_PADDING1];
-
- /* Per instrumentation type configuration */
- union {
- struct lttng_kernel_kretprobe kretprobe;
- struct lttng_kernel_kprobe kprobe;
- struct lttng_kernel_function_tracer ftrace;
- char padding[LTTNG_KERNEL_EVENT_PADDING2];
- } u;
-} __attribute__((packed));
-
-struct lttng_kernel_tracer_version {
- uint32_t major;
- uint32_t minor;
- uint32_t patchlevel;
-} __attribute__((packed));
-
-struct lttng_kernel_tracer_abi_version {
- uint32_t major;
- uint32_t minor;
-} __attribute__((packed));
-
-enum lttng_kernel_calibrate_type {
- LTTNG_KERNEL_CALIBRATE_KRETPROBE,
-};
-
-struct lttng_kernel_calibrate {
- enum lttng_kernel_calibrate_type type; /* type (input) */
-} __attribute__((packed));
-
-struct lttng_kernel_syscall_mask {
- uint32_t len; /* in bits */
- char mask[];
-} __attribute__((packed));
-
-enum lttng_kernel_context_type {
- LTTNG_KERNEL_CONTEXT_PID = 0,
- LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
- LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
- LTTNG_KERNEL_CONTEXT_PRIO = 3,
- LTTNG_KERNEL_CONTEXT_NICE = 4,
- LTTNG_KERNEL_CONTEXT_VPID = 5,
- LTTNG_KERNEL_CONTEXT_TID = 6,
- LTTNG_KERNEL_CONTEXT_VTID = 7,
- LTTNG_KERNEL_CONTEXT_PPID = 8,
- LTTNG_KERNEL_CONTEXT_VPPID = 9,
- LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
- LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
-};
-
-struct lttng_kernel_perf_counter_ctx {
- uint32_t type;
- uint64_t config;
- char name[LTTNG_KERNEL_SYM_NAME_LEN];
-} __attribute__((packed));
-
-#define LTTNG_KERNEL_CONTEXT_PADDING1 16
-#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
-struct lttng_kernel_context {
- enum lttng_kernel_context_type ctx;
- char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
-
- union {
- struct lttng_kernel_perf_counter_ctx perf_counter;
- char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
- } u;
-} __attribute__((packed));
-
-#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
-struct lttng_kernel_filter_bytecode {
- uint32_t len;
- uint32_t reloc_offset;
- uint64_t seqnum;
- char data[0];
-} __attribute__((packed));
-
-/* LTTng file descriptor ioctl */
-#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
-#define LTTNG_KERNEL_TRACER_VERSION \
- _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
-#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
-#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
-#define LTTNG_KERNEL_CALIBRATE \
- _IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
-#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
-#define LTTNG_KERNEL_TRACER_ABI_VERSION \
- _IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
-
-/* Session FD ioctl */
-#define LTTNG_KERNEL_METADATA \
- _IOW(0xF6, 0x54, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_CHANNEL \
- _IOW(0xF6, 0x55, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
-#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
-#define LTTNG_KERNEL_SESSION_TRACK_PID \
- _IOR(0xF6, 0x58, int32_t)
-#define LTTNG_KERNEL_SESSION_UNTRACK_PID \
- _IOR(0xF6, 0x59, int32_t)
-#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
-#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
-
-/* Channel FD ioctl */
-#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
-#define LTTNG_KERNEL_EVENT \
- _IOW(0xF6, 0x63, struct lttng_kernel_event)
-#define LTTNG_KERNEL_SYSCALL_MASK \
- _IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
-
-/* Event and Channel FD ioctl */
-#define LTTNG_KERNEL_CONTEXT \
- _IOW(0xF6, 0x71, struct lttng_kernel_context)
-
-/* Event, Channel and Session ioctl */
-#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
-#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
-
-/* Event FD ioctl */
-#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
-
-/* LTTng-specific ioctls for the lib ringbuffer */
-/* returns the timestamp begin of the current sub-buffer */
-#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
-/* returns the timestamp end of the current sub-buffer */
-#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
-/* returns the number of events discarded */
-#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
-/* returns the packet payload size */
-#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
-/* returns the actual packet size */
-#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
-/* returns the stream id */
-#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
-/* returns the current timestamp */
-#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
-/* returns the packet sequence number */
-#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
-/* returns the stream instance id */
-#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
-
-#ifdef CONFIG_COMPAT
-/* returns the timestamp begin of the current sub-buffer */
-#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
- LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
-/* returns the timestamp end of the current sub-buffer */
-#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
- LTTNG_RING_BUFFER_GET_TIMESTAMP_END
-/* returns the number of events discarded */
-#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
- LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
-/* returns the packet payload size */
-#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
- LTTNG_RING_BUFFER_GET_CONTENT_SIZE
-/* returns the actual packet size */
-#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
- LTTNG_RING_BUFFER_GET_PACKET_SIZE
-/* returns the stream id */
-#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
- LTTNG_RING_BUFFER_GET_STREAM_ID
-/* returns the current timestamp */
-#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
- LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
-/* returns the packet sequence number */
-#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM \
- LTTNG_RING_BUFFER_GET_SEQ_NUM
-/* returns the stream instance id */
-#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID \
- LTTNG_RING_BUFFER_INSTANCE_ID
-#endif /* CONFIG_COMPAT */
-
-#endif /* _LTTNG_ABI_H */
projects / lttng-modules.git / blobdiff