a7817395316463cdd12cd291afa1c003a707ab1c
[lttng-tools.git] / ltt-sessiond / kernel-ctl.h
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 */
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