[deliverable/lttng-modules.git] / lttng-abi-old.h

#ifndef _LTTNG_ABI_OLD_H
#define _LTTNG_ABI_OLD_H

/*
 * lttng-abi-old.h
 *
 * LTTng old ABI header (without support for compat 32/64 bits)
 *
 * 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>
#include "lttng-abi.h"

/*
 * LTTng DebugFS ABI structures.
 */
#define LTTNG_KERNEL_OLD_CHANNEL_PADDING	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_old_channel {
	int overwrite;				/* 1: overwrite, 0: discard */
	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 */
	char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING];
};

struct lttng_kernel_old_kretprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
};

/*
 * Either addr is used, or symbol_name and offset.
 */
struct lttng_kernel_old_kprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
};

struct lttng_kernel_old_function_tracer {
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
};

/*
 * For syscall tracing, name = '\0' means "enable all".
 */
#define LTTNG_KERNEL_OLD_EVENT_PADDING1	16
#define LTTNG_KERNEL_OLD_EVENT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_old_event {
	char name[LTTNG_KERNEL_SYM_NAME_LEN];	/* event name */
	enum lttng_kernel_instrumentation instrumentation;
	char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];

	/* Per instrumentation type configuration */
	union {
		struct lttng_kernel_old_kretprobe kretprobe;
		struct lttng_kernel_old_kprobe kprobe;
		struct lttng_kernel_old_function_tracer ftrace;
		char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
	} u;
};

struct lttng_kernel_old_tracer_version {
	uint32_t major;
	uint32_t minor;
	uint32_t patchlevel;
};

struct lttng_kernel_old_calibrate {
	enum lttng_kernel_calibrate_type type;	/* type (input) */
};

struct lttng_kernel_old_perf_counter_ctx {
	uint32_t type;
	uint64_t config;
	char name[LTTNG_KERNEL_SYM_NAME_LEN];
};

#define LTTNG_KERNEL_OLD_CONTEXT_PADDING1	16
#define LTTNG_KERNEL_OLD_CONTEXT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_old_context {
	enum lttng_kernel_context_type ctx;
	char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];

	union {
		struct lttng_kernel_old_perf_counter_ctx perf_counter;
		char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
	} u;
};

/* LTTng file descriptor ioctl */
#define LTTNG_KERNEL_OLD_SESSION		_IO(0xF6, 0x40)
#define LTTNG_KERNEL_OLD_TRACER_VERSION		\
	_IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
#define LTTNG_KERNEL_OLD_TRACEPOINT_LIST	_IO(0xF6, 0x42)
#define LTTNG_KERNEL_OLD_WAIT_QUIESCENT		_IO(0xF6, 0x43)
#define LTTNG_KERNEL_OLD_CALIBRATE		\
	_IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)

/* Session FD ioctl */
#define LTTNG_KERNEL_OLD_METADATA		\
	_IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
#define LTTNG_KERNEL_OLD_CHANNEL		\
	_IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
#define LTTNG_KERNEL_OLD_SESSION_START		_IO(0xF6, 0x52)
#define LTTNG_KERNEL_OLD_SESSION_STOP		_IO(0xF6, 0x53)

/* Channel FD ioctl */
#define LTTNG_KERNEL_OLD_STREAM			_IO(0xF6, 0x60)
#define LTTNG_KERNEL_OLD_EVENT			\
	_IOW(0xF6, 0x61, struct lttng_kernel_old_event)

/* Event and Channel FD ioctl */
#define LTTNG_KERNEL_OLD_CONTEXT		\
	_IOW(0xF6, 0x70, struct lttng_kernel_old_context)

/* Event, Channel and Session ioctl */
#define LTTNG_KERNEL_OLD_ENABLE			_IO(0xF6, 0x80)
#define LTTNG_KERNEL_OLD_DISABLE		_IO(0xF6, 0x81)

#endif /* _LTTNG_ABI_OLD_H */
Commit	Line	Data
	1	#ifndef _LTTNG_ABI_OLD_H
	2	#define _LTTNG_ABI_OLD_H
	3
	4	/*
	5	* lttng-abi-old.h
	6	*
	7	* LTTng old ABI header (without support for compat 32/64 bits)
	8	*
	9	* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* This library is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU Lesser General Public
	13	* License as published by the Free Software Foundation; only
	14	* version 2.1 of the License.
	15	*
	16	* This library is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* Lesser General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU Lesser General Public
	22	* License along with this library; if not, write to the Free Software
	23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	24	*/
	25
	26	#include <linux/fs.h>
	27	#include "lttng-abi.h"
	28
	29	/*
	30	* LTTng DebugFS ABI structures.
	31	*/
	32	#define LTTNG_KERNEL_OLD_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
	33	struct lttng_kernel_old_channel {
	34	int overwrite; /* 1: overwrite, 0: discard */
	35	uint64_t subbuf_size; /* in bytes */
	36	uint64_t num_subbuf;
	37	unsigned int switch_timer_interval; /* usecs */
	38	unsigned int read_timer_interval; /* usecs */
	39	enum lttng_kernel_output output; /* splice, mmap */
	40	char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING];
	41	};
	42
	43	struct lttng_kernel_old_kretprobe {
	44	uint64_t addr;
	45
	46	uint64_t offset;
	47	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	48	};
	49
	50	/*
	51	* Either addr is used, or symbol_name and offset.
	52	*/
	53	struct lttng_kernel_old_kprobe {
	54	uint64_t addr;
	55
	56	uint64_t offset;
	57	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	58	};
	59
	60	struct lttng_kernel_old_function_tracer {
	61	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	62	};
	63
	64	/*
	65	* For syscall tracing, name = '\0' means "enable all".
	66	*/
	67	#define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
	68	#define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	69	struct lttng_kernel_old_event {
	70	char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
	71	enum lttng_kernel_instrumentation instrumentation;
	72	char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];
	73
	74	/* Per instrumentation type configuration */
	75	union {
	76	struct lttng_kernel_old_kretprobe kretprobe;
	77	struct lttng_kernel_old_kprobe kprobe;
	78	struct lttng_kernel_old_function_tracer ftrace;
	79	char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
	80	} u;
	81	};
	82
	83	struct lttng_kernel_old_tracer_version {
	84	uint32_t major;
	85	uint32_t minor;
	86	uint32_t patchlevel;
	87	};
	88
	89	struct lttng_kernel_old_calibrate {
	90	enum lttng_kernel_calibrate_type type; /* type (input) */
	91	};
	92
	93	struct lttng_kernel_old_perf_counter_ctx {
	94	uint32_t type;
	95	uint64_t config;
	96	char name[LTTNG_KERNEL_SYM_NAME_LEN];
	97	};
	98
	99	#define LTTNG_KERNEL_OLD_CONTEXT_PADDING1 16
	100	#define LTTNG_KERNEL_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	101	struct lttng_kernel_old_context {
	102	enum lttng_kernel_context_type ctx;
	103	char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];
	104
	105	union {
	106	struct lttng_kernel_old_perf_counter_ctx perf_counter;
	107	char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
	108	} u;
	109	};
	110
	111	/* LTTng file descriptor ioctl */
	112	#define LTTNG_KERNEL_OLD_SESSION _IO(0xF6, 0x40)
	113	#define LTTNG_KERNEL_OLD_TRACER_VERSION \
	114	_IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
	115	#define LTTNG_KERNEL_OLD_TRACEPOINT_LIST _IO(0xF6, 0x42)
	116	#define LTTNG_KERNEL_OLD_WAIT_QUIESCENT _IO(0xF6, 0x43)
	117	#define LTTNG_KERNEL_OLD_CALIBRATE \
	118	_IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)
	119
	120	/* Session FD ioctl */
	121	#define LTTNG_KERNEL_OLD_METADATA \
	122	_IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
	123	#define LTTNG_KERNEL_OLD_CHANNEL \
	124	_IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
	125	#define LTTNG_KERNEL_OLD_SESSION_START _IO(0xF6, 0x52)
	126	#define LTTNG_KERNEL_OLD_SESSION_STOP _IO(0xF6, 0x53)
	127
	128	/* Channel FD ioctl */
	129	#define LTTNG_KERNEL_OLD_STREAM _IO(0xF6, 0x60)
	130	#define LTTNG_KERNEL_OLD_EVENT \
	131	_IOW(0xF6, 0x61, struct lttng_kernel_old_event)
	132
	133	/* Event and Channel FD ioctl */
	134	#define LTTNG_KERNEL_OLD_CONTEXT \
	135	_IOW(0xF6, 0x70, struct lttng_kernel_old_context)
	136
	137	/* Event, Channel and Session ioctl */
	138	#define LTTNG_KERNEL_OLD_ENABLE _IO(0xF6, 0x80)
	139	#define LTTNG_KERNEL_OLD_DISABLE _IO(0xF6, 0x81)
	140
	141	#endif /* _LTTNG_ABI_OLD_H */