[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 <stdint.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,
	LTTNG_KERNEL_KRETPROBE     = 3,
	LTTNG_KERNEL_NOOP          = 4,    /* not hooked */
	LTTNG_KERNEL_SYSCALL       = 5,
};

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_SYM_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;
};

struct lttng_kernel_kretprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_SYM_NAME_LEN];
};

/*
 * 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_kretprobe kretprobe;
		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;
};

enum lttng_kernel_calibrate_type {
	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
};

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

#endif /* _LTTNG_KERNEL_H */
Commit	Line	Data
	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
	8	* as published by the Free Software Foundation; only version 2
	9	* of the License.
	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
	24	#include <stdint.h>
	25
	26	#include <lttng-share.h>
	27
	28	#define LTTNG_SYM_NAME_LEN 128
	29
	30	/*
	31	* LTTng DebugFS ABI structures.
	32	*
	33	* This is the kernel ABI copied from lttng-modules tree.
	34	*/
	35
	36	enum lttng_kernel_instrumentation {
	37	LTTNG_KERNEL_TRACEPOINT = 0,
	38	LTTNG_KERNEL_KPROBE = 1,
	39	LTTNG_KERNEL_FUNCTION = 2,
	40	LTTNG_KERNEL_KRETPROBE = 3,
	41	LTTNG_KERNEL_NOOP = 4, /* not hooked */
	42	LTTNG_KERNEL_SYSCALL = 5,
	43	};
	44
	45	enum lttng_kernel_context_type {
	46	LTTNG_KERNEL_CONTEXT_PID = 0,
	47	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
	48	LTTNG_KERNEL_CONTEXT_COMM = 2,
	49	LTTNG_KERNEL_CONTEXT_PRIO = 3,
	50	LTTNG_KERNEL_CONTEXT_NICE = 4,
	51	LTTNG_KERNEL_CONTEXT_VPID = 5,
	52	LTTNG_KERNEL_CONTEXT_TID = 6,
	53	LTTNG_KERNEL_CONTEXT_VTID = 7,
	54	LTTNG_KERNEL_CONTEXT_PPID = 8,
	55	LTTNG_KERNEL_CONTEXT_VPPID = 9,
	56	};
	57
	58	/* Perf counter attributes */
	59	struct lttng_kernel_perf_counter_ctx {
	60	uint32_t type;
	61	uint64_t config;
	62	char name[LTTNG_SYM_NAME_LEN];
	63	};
	64
	65	/* Event/Channel context */
	66	struct lttng_kernel_context {
	67	enum lttng_kernel_context_type ctx;
	68	union {
	69	struct lttng_kernel_perf_counter_ctx perf_counter;
	70	} u;
	71	};
	72
	73	struct lttng_kernel_kretprobe {
	74	uint64_t addr;
	75
	76	uint64_t offset;
	77	char symbol_name[LTTNG_SYM_NAME_LEN];
	78	};
	79
	80	/*
	81	* Either addr is used, or symbol_name and offset.
	82	*/
	83	struct lttng_kernel_kprobe {
	84	uint64_t addr;
	85
	86	uint64_t offset;
	87	char symbol_name[LTTNG_SYM_NAME_LEN];
	88	};
	89
	90	/* Function tracer */
	91	struct lttng_kernel_function {
	92	char symbol_name[LTTNG_SYM_NAME_LEN];
	93	};
	94
	95	struct lttng_kernel_event {
	96	char name[LTTNG_SYM_NAME_LEN];
	97	enum lttng_kernel_instrumentation instrumentation;
	98	/* Per instrumentation type configuration */
	99	union {
	100	struct lttng_kernel_kretprobe kretprobe;
	101	struct lttng_kernel_kprobe kprobe;
	102	struct lttng_kernel_function ftrace;
	103	} u;
	104	};
	105
	106	struct lttng_kernel_tracer_version {
	107	uint32_t version;
	108	uint32_t patchlevel;
	109	uint32_t sublevel;
	110	};
	111
	112	enum lttng_kernel_calibrate_type {
	113	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
	114	};
	115
	116	struct lttng_kernel_calibrate {
	117	enum lttng_kernel_calibrate_type type; /* type (input) */
	118	};
	119
	120	#endif /* _LTTNG_KERNEL_H */