relayd: create stream files relative to a session's trace chunk
[lttng-tools.git] / src / bin / lttng-sessiond / kernel.h
... / ...
CommitLineData
1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18#ifndef _LTT_KERNEL_CTL_H
19#define _LTT_KERNEL_CTL_H
20
21#include "session.h"
22#include "snapshot.h"
23#include "trace-kernel.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_INIT_LIST_SIZE 64
33#define KERNEL_TRACKER_PIDS_INIT_LIST_SIZE 64
34
35int kernel_add_channel_context(struct ltt_kernel_channel *chan,
36 struct ltt_kernel_context *ctx);
37int kernel_create_session(struct ltt_session *session, int tracer_fd);
38int kernel_create_channel(struct ltt_kernel_session *session,
39 struct lttng_channel *chan);
40int kernel_create_event(struct lttng_event *ev, struct ltt_kernel_channel *channel,
41 char *filter_expression, struct lttng_filter_bytecode *filter);
42int kernel_disable_channel(struct ltt_kernel_channel *chan);
43int kernel_disable_event(struct ltt_kernel_event *event);
44int kernel_enable_event(struct ltt_kernel_event *event);
45int kernel_enable_channel(struct ltt_kernel_channel *chan);
46int kernel_track_pid(struct ltt_kernel_session *session, int pid);
47int kernel_untrack_pid(struct ltt_kernel_session *session, int pid);
48int kernel_open_metadata(struct ltt_kernel_session *session);
49int kernel_open_metadata_stream(struct ltt_kernel_session *session);
50int kernel_open_channel_stream(struct ltt_kernel_channel *channel);
51int kernel_flush_buffer(struct ltt_kernel_channel *channel);
52int kernel_metadata_flush_buffer(int fd);
53int kernel_start_session(struct ltt_kernel_session *session);
54int kernel_stop_session(struct ltt_kernel_session *session);
55ssize_t kernel_list_events(int tracer_fd, struct lttng_event **event_list);
56void kernel_wait_quiescent(int fd);
57int kernel_validate_version(int tracer_fd,
58 struct lttng_kernel_tracer_version *kernel_tracer_version,
59 struct lttng_kernel_tracer_abi_version *kernel_tracer_abi_version);
60void kernel_destroy_session(struct ltt_kernel_session *ksess);
61void kernel_destroy_channel(struct ltt_kernel_channel *kchan);
62enum lttng_error_code kernel_snapshot_record(
63 struct ltt_kernel_session *ksess,
64 const struct consumer_output *output, int wait,
65 uint64_t nb_packets_per_stream);
66int kernel_syscall_mask(int chan_fd, char **syscall_mask, uint32_t *nr_bits);
67enum lttng_error_code kernel_rotate_session(struct ltt_session *session);
68
69int init_kernel_workarounds(void);
70ssize_t kernel_list_tracker_pids(struct ltt_kernel_session *session,
71 int **_pids);
72int kernel_supports_ring_buffer_snapshot_sample_positions(int tracer_fd);
73
74enum lttng_error_code kernel_create_channel_subdirectories(
75 const struct ltt_kernel_session *ksess);
76
77#endif /* _LTT_KERNEL_CTL_H */
This page took 0.023537 seconds and 4 git commands to generate.