[lttng-tools.git] / ltt-sessiond / kernel-ctl.h

/*
 * Copyright (C) 2011 - 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 _LTT_KERNEL_CTL_H
#define _LTT_KERNEL_CTL_H

#include "session.h"
#include "trace.h"

/*
 * Default size for the event list when kernel_list_events is called. This size
 * value is based on the initial LTTng 2.0 version set of tracepoints.
 *
 * This is NOT an upper bound because if the real event list size is bigger,
 * dynamic reallocation is performed.
 */
#define KERNEL_EVENT_LIST_SIZE 80

int kernel_add_channel_context(struct ltt_kernel_channel *chan,
		struct lttng_kernel_context *ctx);
int kernel_add_event_context(struct ltt_kernel_event *event,
		struct lttng_kernel_context *ctx);
int kernel_create_session(struct ltt_session *session, int tracer_fd);
int kernel_create_channel(struct ltt_kernel_session *session,
		struct lttng_channel *chan, char *path);
int kernel_create_event(struct lttng_event *ev, struct ltt_kernel_channel *channel);
int kernel_disable_channel(struct ltt_kernel_channel *chan);
int kernel_disable_event(struct ltt_kernel_event *event);
int kernel_enable_event(struct ltt_kernel_event *event);
int kernel_enable_channel(struct ltt_kernel_channel *chan);
int kernel_open_metadata(struct ltt_kernel_session *session, char *path);
int kernel_open_metadata_stream(struct ltt_kernel_session *session);
int kernel_open_channel_stream(struct ltt_kernel_channel *channel);
int kernel_flush_buffer(struct ltt_kernel_channel *channel);
int kernel_metadata_flush_buffer(int fd);
int kernel_start_session(struct ltt_kernel_session *session);
int kernel_stop_session(struct ltt_kernel_session *session);
ssize_t kernel_list_events(int tracer_fd, struct lttng_event **event_list);
void kernel_wait_quiescent(int fd);
int kernel_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);

#endif /* _LTT_KERNEL_CTL_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; only version 2
	7	* of the License.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
	19	#ifndef _LTT_KERNEL_CTL_H
	20	#define _LTT_KERNEL_CTL_H
	21
	22	#include "session.h"
	23	#include "trace.h"
	24
	25	/*
	26	* Default size for the event list when kernel_list_events is called. This size
	27	* value is based on the initial LTTng 2.0 version set of tracepoints.
	28	*
	29	* This is NOT an upper bound because if the real event list size is bigger,
	30	* dynamic reallocation is performed.
	31	*/
	32	#define KERNEL_EVENT_LIST_SIZE 80
	33
	34	int kernel_add_channel_context(struct ltt_kernel_channel *chan,
	35	struct lttng_kernel_context *ctx);
	36	int kernel_add_event_context(struct ltt_kernel_event *event,
	37	struct lttng_kernel_context *ctx);
	38	int kernel_create_session(struct ltt_session *session, int tracer_fd);
	39	int kernel_create_channel(struct ltt_kernel_session *session,
	40	struct lttng_channel chan, char path);
	41	int kernel_create_event(struct lttng_event ev, struct ltt_kernel_channel channel);
	42	int kernel_disable_channel(struct ltt_kernel_channel *chan);
	43	int kernel_disable_event(struct ltt_kernel_event *event);
	44	int kernel_enable_event(struct ltt_kernel_event *event);
	45	int kernel_enable_channel(struct ltt_kernel_channel *chan);
	46	int kernel_open_metadata(struct ltt_kernel_session session, char path);
	47	int kernel_open_metadata_stream(struct ltt_kernel_session *session);
	48	int kernel_open_channel_stream(struct ltt_kernel_channel *channel);
	49	int kernel_flush_buffer(struct ltt_kernel_channel *channel);
	50	int kernel_metadata_flush_buffer(int fd);
	51	int kernel_start_session(struct ltt_kernel_session *session);
	52	int kernel_stop_session(struct ltt_kernel_session *session);
	53	ssize_t kernel_list_events(int tracer_fd, struct lttng_event **event_list);
	54	void kernel_wait_quiescent(int fd);
	55	int kernel_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
	56
	57	#endif /* _LTT_KERNEL_CTL_H */