[lttng-modules.git] / ltt-debugfs-abi.h

#ifndef _LTT_DEBUGFS_ABI_H
#define _LTT_DEBUGFS_ABI_H

/*
 * ltt-debugfs-abi.h
 *
 * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * LTTng debugfs ABI header
 */

#include <linux/fs.h>

enum lttng_kernel_instrumentation {
	LTTNG_KERNEL_TRACEPOINTS,
	LTTNG_KERNEL_KPROBES,
};

/*
 * LTTng DebugFS ABI structures.
 */

struct lttng_kernel_channel {
	int overwrite;			/* 1: overwrite, 0: discard */
	uint64_t subbuf_size;
	uint64_t num_subbuf;
	unsigned int switch_timer_interval;
	unsigned int read_timer_interval;
};

struct lttng_kernel_event {
	enum lttng_kernel_instrumentation instrumentation;
	char name[];
};

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

	uint64_t offset;
	char symbol_name[];
};

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

#define LTTNG_KERNEL_SESSION		_IO(0xF6, 0x40)
#define LTTNG_KERNEL_SESSION_START	_IO(0xF6, 0x41)
#define LTTNG_KERNEL_SESSION_STOP	_IO(0xF6, 0x42)
#define LTTNG_KERNEL_CHANNEL		\
	_IOW(0xF6, 0x43, struct lttng_kernel_channel)
#define LTTNG_KERNEL_STREAM		_IO(0xF6, 0x44)
#define LTTNG_KERNEL_EVENT		\
	_IOW(0xF6, 0x45, struct lttng_kernel_event)
#define LTTNG_KERNEL_METADATA		\
	_IOW(0xF6, 0x46, struct lttng_kernel_channel)
#define LTTNG_KERNEL_KPROBE		\
	_IOW(0xF6, 0x47, struct lttng_kernel_kprobe)
#define LTTNG_KERNEL_TRACER_VERSION	\
	_IOR(0xF6, 0x48, struct lttng_kernel_tracer_version)

#endif /* _LTT_DEBUGFS_ABI_H */
Commit	Line	Data
57a13317 MD	1	#ifndef _LTT_DEBUGFS_ABI_H
	2	#define _LTT_DEBUGFS_ABI_H
	3
	4	/*
	5	* ltt-debugfs-abi.h
	6	*
	7	* Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* LTTng debugfs ABI header
	10	*/
	11
	12	#include <linux/fs.h>
	13
38d024ae MD	14	enum lttng_kernel_instrumentation {
	15	LTTNG_KERNEL_TRACEPOINTS,
	16	LTTNG_KERNEL_KPROBES,
57a13317 MD	17	};
	18
	19	/*
	20	* LTTng DebugFS ABI structures.
	21	*/
	22
38d024ae	23	struct lttng_kernel_channel {
57a13317	24	int overwrite; /* 1: overwrite, 0: discard */
80c16bcf MD	25	uint64_t subbuf_size;
80c16bcf MD	26	uint64_t num_subbuf;
57a13317 MD	27	unsigned int switch_timer_interval;
	28	unsigned int read_timer_interval;
	29	};
	30
38d024ae MD	31	struct lttng_kernel_event {
38d024ae MD	32	enum lttng_kernel_instrumentation instrumentation;
57a13317 MD	33	char name[];
	34	};
	35
38d024ae MD	36	/*
	37	* Either addr is used, or symbol_name and offset.
	38	*/
	39	struct lttng_kernel_kprobe {
80c16bcf	40	uint64_t addr;
38d024ae	41
80c16bcf	42	uint64_t offset;
38d024ae MD	43	char symbol_name[];
38d024ae MD	44	};
c099397a	45
80c16bcf MD	46	struct lttng_kernel_tracer_version {
	47	uint32_t version;
	48	uint32_t patchlevel;
	49	uint32_t sublevel;
	50	};
	51
38d024ae MD	52	#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
	53	#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x41)
	54	#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x42)
	55	#define LTTNG_KERNEL_CHANNEL \
	56	_IOW(0xF6, 0x43, struct lttng_kernel_channel)
	57	#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x44)
	58	#define LTTNG_KERNEL_EVENT \
	59	_IOW(0xF6, 0x45, struct lttng_kernel_event)
	60	#define LTTNG_KERNEL_METADATA \
	61	_IOW(0xF6, 0x46, struct lttng_kernel_channel)
	62	#define LTTNG_KERNEL_KPROBE \
	63	_IOW(0xF6, 0x47, struct lttng_kernel_kprobe)
	64	#define LTTNG_KERNEL_TRACER_VERSION \
80c16bcf	65	_IOR(0xF6, 0x48, struct lttng_kernel_tracer_version)
57a13317 MD	66
57a13317 MD	67	#endif /* _LTT_DEBUGFS_ABI_H */