[lttng-tools.git] / src / common / lttng-kernel-old.h

/*
 * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _LTTNG_KERNEL_OLD_H
#define _LTTNG_KERNEL_OLD_H

#include <stdint.h>
#include <common/lttng-kernel.h>

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

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

/* Event/Channel context */
#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1  16
#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2  LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
struct lttng_kernel_abi_old_context {
	enum lttng_kernel_abi_context_type ctx;
	char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1];

	union {
		struct lttng_kernel_abi_old_perf_counter_ctx perf_counter;
		char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2];
	} u;
};

struct lttng_kernel_abi_old_kretprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
};

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

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
};

/* Function tracer */
struct lttng_kernel_abi_old_function {
	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
};

#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1    16
#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2    LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
struct lttng_kernel_abi_old_event {
	char name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
	enum lttng_kernel_abi_instrumentation instrumentation;
	char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1];

	/* Per instrumentation type configuration */
	union {
		struct lttng_kernel_abi_old_kretprobe kretprobe;
		struct lttng_kernel_abi_old_kprobe kprobe;
		struct lttng_kernel_abi_old_function ftrace;
		char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2];
	} u;
};

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

/*
 * kernel channel
 */
#define LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
struct lttng_kernel_abi_old_channel {
	int overwrite;                      /* 1: overwrite, 0: discard */
	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 */

	char padding[LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1];
};

#endif /* _LTTNG_KERNEL_OLD_H */
Commit	Line	Data
4dbc372b	1	/*
ab5be9fa MJ	2	* Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
	3	* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	4	* Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
4dbc372b	5	*
ab5be9fa	6	* SPDX-License-Identifier: GPL-2.0-only
4dbc372b	7	*
4dbc372b JD	8	*/
	9
	10	#ifndef _LTTNG_KERNEL_OLD_H
	11	#define _LTTNG_KERNEL_OLD_H
	12
	13	#include <stdint.h>
	14	#include <common/lttng-kernel.h>
	15
	16	/*
	17	* LTTng DebugFS ABI structures.
	18	*
	19	* This is the kernel ABI copied from lttng-modules tree.
	20	*/
	21
	22	/* Perf counter attributes */
2d6bae7e	23	struct lttng_kernel_abi_old_perf_counter_ctx {
4dbc372b JD	24	uint32_t type;
4dbc372b JD	25	uint64_t config;
2d6bae7e	26	char name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	27	};
	28
	29	/* Event/Channel context */
2d6bae7e FD	30	#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1 16
	31	#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
	32	struct lttng_kernel_abi_old_context {
	33	enum lttng_kernel_abi_context_type ctx;
	34	char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1];
4dbc372b JD	35
4dbc372b JD	36	union {
2d6bae7e FD	37	struct lttng_kernel_abi_old_perf_counter_ctx perf_counter;
2d6bae7e FD	38	char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2];
4dbc372b JD	39	} u;
	40	};
	41
2d6bae7e	42	struct lttng_kernel_abi_old_kretprobe {
4dbc372b JD	43	uint64_t addr;
	44
	45	uint64_t offset;
2d6bae7e	46	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	47	};
	48
	49	/*
	50	* Either addr is used, or symbol_name and offset.
	51	*/
2d6bae7e	52	struct lttng_kernel_abi_old_kprobe {
4dbc372b JD	53	uint64_t addr;
	54
	55	uint64_t offset;
2d6bae7e	56	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	57	};
	58
	59	/* Function tracer */
2d6bae7e FD	60	struct lttng_kernel_abi_old_function {
2d6bae7e FD	61	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	62	};
4dbc372b JD	63
2d6bae7e FD	64	#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1 16
	65	#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2 LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
	66	struct lttng_kernel_abi_old_event {
	67	char name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
	68	enum lttng_kernel_abi_instrumentation instrumentation;
	69	char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1];
4dbc372b JD	70
	71	/* Per instrumentation type configuration */
	72	union {
2d6bae7e FD	73	struct lttng_kernel_abi_old_kretprobe kretprobe;
	74	struct lttng_kernel_abi_old_kprobe kprobe;
	75	struct lttng_kernel_abi_old_function ftrace;
	76	char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2];
4dbc372b JD	77	} u;
	78	};
	79
2d6bae7e	80	struct lttng_kernel_abi_old_tracer_version {
4dbc372b JD	81	uint32_t major;
	82	uint32_t minor;
	83	uint32_t patchlevel;
	84	};
	85
4dbc372b JD	86	/*
	87	* kernel channel
	88	*/
2d6bae7e FD	89	#define LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
2d6bae7e FD	90	struct lttng_kernel_abi_old_channel {
4dbc372b JD	91	int overwrite; /* 1: overwrite, 0: discard */
	92	uint64_t subbuf_size; /* bytes */
	93	uint64_t num_subbuf; /* power of 2 */
	94	unsigned int switch_timer_interval; /* usec */
	95	unsigned int read_timer_interval; /* usec */
	96	enum lttng_event_output output; /* splice, mmap */
	97
2d6bae7e	98	char padding[LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1];
4dbc372b JD	99	};
	100
	101	#endif /* _LTTNG_KERNEL_OLD_H */