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

/*
 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 * Copyright (C) 2011 EfficiOS Inc.
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _LTTNG_KERNEL_OLD_H
#define _LTTNG_KERNEL_OLD_H

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

/*
 * 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	2	* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
21cf9b6b	3	* Copyright (C) 2011 EfficiOS Inc.
4dbc372b	4	*
ab5be9fa	5	* SPDX-License-Identifier: GPL-2.0-only
4dbc372b	6	*
4dbc372b JD	7	*/
	8
	9	#ifndef _LTTNG_KERNEL_OLD_H
	10	#define _LTTNG_KERNEL_OLD_H
	11
	12	#include <stdint.h>
c9e313bc	13	#include <common/lttng-kernel.hpp>
4dbc372b JD	14
	15	/*
	16	* LTTng DebugFS ABI structures.
	17	*
	18	* This is the kernel ABI copied from lttng-modules tree.
	19	*/
	20
	21	/* Perf counter attributes */
b8e2fb80	22	struct lttng_kernel_abi_old_perf_counter_ctx {
4dbc372b JD	23	uint32_t type;
4dbc372b JD	24	uint64_t config;
b8e2fb80	25	char name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	26	};
	27
	28	/* Event/Channel context */
b8e2fb80 FD	29	#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1 16
	30	#define LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
	31	struct lttng_kernel_abi_old_context {
	32	enum lttng_kernel_abi_context_type ctx;
	33	char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING1];
4dbc372b JD	34
4dbc372b JD	35	union {
b8e2fb80 FD	36	struct lttng_kernel_abi_old_perf_counter_ctx perf_counter;
b8e2fb80 FD	37	char padding[LTTNG_KERNEL_ABI_OLD_CONTEXT_PADDING2];
4dbc372b JD	38	} u;
	39	};
	40
b8e2fb80	41	struct lttng_kernel_abi_old_kretprobe {
4dbc372b JD	42	uint64_t addr;
	43
	44	uint64_t offset;
b8e2fb80	45	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	46	};
	47
	48	/*
	49	* Either addr is used, or symbol_name and offset.
	50	*/
b8e2fb80	51	struct lttng_kernel_abi_old_kprobe {
4dbc372b JD	52	uint64_t addr;
	53
	54	uint64_t offset;
b8e2fb80	55	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	56	};
	57
	58	/* Function tracer */
b8e2fb80 FD	59	struct lttng_kernel_abi_old_function {
b8e2fb80 FD	60	char symbol_name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
4dbc372b JD	61	};
4dbc372b JD	62
b8e2fb80 FD	63	#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1 16
	64	#define LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2 LTTNG_KERNEL_ABI_SYM_NAME_LEN + 32
	65	struct lttng_kernel_abi_old_event {
	66	char name[LTTNG_KERNEL_ABI_SYM_NAME_LEN];
	67	enum lttng_kernel_abi_instrumentation instrumentation;
	68	char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING1];
4dbc372b JD	69
	70	/* Per instrumentation type configuration */
	71	union {
b8e2fb80 FD	72	struct lttng_kernel_abi_old_kretprobe kretprobe;
	73	struct lttng_kernel_abi_old_kprobe kprobe;
	74	struct lttng_kernel_abi_old_function ftrace;
	75	char padding[LTTNG_KERNEL_ABI_OLD_EVENT_PADDING2];
4dbc372b JD	76	} u;
	77	};
	78
b8e2fb80	79	struct lttng_kernel_abi_old_tracer_version {
4dbc372b JD	80	uint32_t major;
	81	uint32_t minor;
	82	uint32_t patchlevel;
	83	};
	84
4dbc372b JD	85	/*
	86	* kernel channel
	87	*/
b8e2fb80 FD	88	#define LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
b8e2fb80 FD	89	struct lttng_kernel_abi_old_channel {
4dbc372b JD	90	int overwrite; /* 1: overwrite, 0: discard */
	91	uint64_t subbuf_size; /* bytes */
	92	uint64_t num_subbuf; /* power of 2 */
	93	unsigned int switch_timer_interval; /* usec */
	94	unsigned int read_timer_interval; /* usec */
	95	enum lttng_event_output output; /* splice, mmap */
	96
b8e2fb80	97	char padding[LTTNG_KERNEL_ABI_OLD_CHANNEL_PADDING1];
4dbc372b JD	98	};
	99
	100	#endif /* _LTTNG_KERNEL_OLD_H */