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[lttng-tools.git] / ltt-sessiond / kernel-ctl.h
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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; either version 2
7 * of the License, or (at your option) any later version.
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
8c0faa1d 22#include "session.h"
9e78d6ae 23#include "trace.h"
f34daff7 24
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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. This is
28 * NOT an upper bound because if the real event list size is bigger, dynamic
29 * reallocation is performed.
30 */
31#define KERNEL_EVENT_LIST_SIZE 2000
32
8c0faa1d 33int kernel_create_session(struct ltt_session *session, int tracer_fd);
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34int kernel_create_channel(struct ltt_kernel_session *session, struct lttng_channel *chan);
35int kernel_create_event(struct ltt_kernel_channel *channel, struct lttng_event *ev);
e953ef25 36int kernel_disable_event(char *event_name, struct ltt_kernel_channel *channel);
aaf26714 37int kernel_open_metadata(struct ltt_kernel_session *session);
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38int kernel_open_metadata_stream(struct ltt_kernel_session *session);
39int kernel_open_channel_stream(struct ltt_kernel_channel *channel);
40int kernel_flush_buffer(struct ltt_kernel_channel *channel);
41int kernel_metadata_flush_buffer(int fd);
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42int kernel_start_session(struct ltt_kernel_session *session);
43int kernel_stop_session(struct ltt_kernel_session *session);
2ef84c95 44ssize_t kernel_list_events(int tracer_fd, char **event_list);
f3ed775e 45void kernel_wait_quiescent(int fd);
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46
47#endif /* _LTT_KERNEL_CTL_H */
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