[lttng-tools.git] / include / lttng-kernel.h

/*
 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
 *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *                      David Goulet <david.goulet@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; only version 2
 * of the License.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _LTTNG_KERNEL_H
#define _LTTNG_KERNEL_H

#include "lttng-share.h"

#define LTTNG_SYM_NAME_LEN  128

/*
 * LTTng DebugFS ABI structures.
 *
 * This is the kernel ABI copied from lttng-modules tree.
 */

enum lttng_kernel_instrumentation {
	LTTNG_KERNEL_TRACEPOINT    = 0,
	LTTNG_KERNEL_KPROBE        = 1,
	LTTNG_KERNEL_FUNCTION      = 2,
};

enum lttng_kernel_context_type {
	LTTNG_KERNEL_CONTEXT_PID            = 0,
	LTTNG_KERNEL_CONTEXT_PERF_COUNTER   = 1,
	LTTNG_KERNEL_CONTEXT_COMM           = 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,
};

/* Perf counter attributes */
struct lttng_kernel_perf_counter_ctx {
	uint32_t type;
	uint64_t config;
	char name[LTTNG_SYMBOL_NAME_LEN];
};

/* Event/Channel context */
struct lttng_kernel_context {
	enum lttng_kernel_context_type ctx;
	union {
		struct lttng_kernel_perf_counter_ctx perf_counter;
	} u;
};

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

	uint64_t offset;
	char symbol_name[LTTNG_SYM_NAME_LEN];
};

/* Function tracer */
struct lttng_kernel_function {
	char symbol_name[LTTNG_SYM_NAME_LEN];
};

struct lttng_kernel_event {
	char name[LTTNG_SYM_NAME_LEN];
	enum lttng_kernel_instrumentation instrumentation;
	/* Per instrumentation type configuration */
	union {
		struct lttng_kernel_kprobe kprobe;
		struct lttng_kernel_function ftrace;
	} u;
};

struct lttng_kernel_tracer_version {
	uint32_t version;
	uint32_t patchlevel;
	uint32_t sublevel;
};

#endif /* _LTTNG_KERNEL_H */
Commit	Line	Data
93128a92 DG	1	/*
	2	* Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
	3	* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	4	* David Goulet <david.goulet@polymtl.ca>
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
82a3637f DG	8	* as published by the Free Software Foundation; only version 2
82a3637f DG	9	* of the License.
93128a92 DG	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	19	*/
	20
	21	#ifndef _LTTNG_KERNEL_H
	22	#define _LTTNG_KERNEL_H
	23
9bda164d	24	#include "lttng-share.h"
93128a92	25
9cb98350 JD	26	#define LTTNG_SYM_NAME_LEN 128
9cb98350 JD	27
7d29a247 DG	28	/*
	29	* LTTng DebugFS ABI structures.
	30	*
	31	* This is the kernel ABI copied from lttng-modules tree.
	32	*/
	33
9cb98350	34	enum lttng_kernel_instrumentation {
e6ddca71 DG	35	LTTNG_KERNEL_TRACEPOINT = 0,
	36	LTTNG_KERNEL_KPROBE = 1,
	37	LTTNG_KERNEL_FUNCTION = 2,
	38	};
	39
7d29a247 DG	40	enum lttng_kernel_context_type {
	41	LTTNG_KERNEL_CONTEXT_PID = 0,
	42	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
	43	LTTNG_KERNEL_CONTEXT_COMM = 2,
	44	LTTNG_KERNEL_CONTEXT_PRIO = 3,
	45	LTTNG_KERNEL_CONTEXT_NICE = 4,
	46	LTTNG_KERNEL_CONTEXT_VPID = 5,
	47	LTTNG_KERNEL_CONTEXT_TID = 6,
	48	LTTNG_KERNEL_CONTEXT_VTID = 7,
	49	LTTNG_KERNEL_CONTEXT_PPID = 8,
	50	LTTNG_KERNEL_CONTEXT_VPPID = 9,
	51	};
	52
	53	/* Perf counter attributes */
	54	struct lttng_kernel_perf_counter_ctx {
	55	uint32_t type;
	56	uint64_t config;
	57	char name[LTTNG_SYMBOL_NAME_LEN];
	58	};
	59
	60	/* Event/Channel context */
	61	struct lttng_kernel_context {
	62	enum lttng_kernel_context_type ctx;
	63	union {
	64	struct lttng_kernel_perf_counter_ctx perf_counter;
	65	} u;
9cb98350 JD	66	};
9cb98350 JD	67
93128a92	68	/*
7d29a247	69	* Either addr is used, or symbol_name and offset.
93128a92	70	*/
7d29a247 DG	71	struct lttng_kernel_kprobe {
	72	uint64_t addr;
	73
	74	uint64_t offset;
	75	char symbol_name[LTTNG_SYM_NAME_LEN];
	76	};
9cb98350	77
f05b5f07	78	/* Function tracer */
7d29a247	79	struct lttng_kernel_function {
9cb98350	80	char symbol_name[LTTNG_SYM_NAME_LEN];
93128a92 DG	81	};
93128a92 DG	82
9cb98350	83	struct lttng_kernel_event {
f3ed775e	84	char name[LTTNG_SYM_NAME_LEN];
9cb98350 JD	85	enum lttng_kernel_instrumentation instrumentation;
	86	/* Per instrumentation type configuration */
	87	union {
7d29a247 DG	88	struct lttng_kernel_kprobe kprobe;
7d29a247 DG	89	struct lttng_kernel_function ftrace;
9cb98350	90	} u;
93128a92 DG	91	};
93128a92 DG	92
9cb98350 JD	93	struct lttng_kernel_tracer_version {
	94	uint32_t version;
	95	uint32_t patchlevel;
	96	uint32_t sublevel;
93128a92 DG	97	};
	98
	99	#endif /* _LTTNG_KERNEL_H */