2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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.
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.
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.
18 #ifndef _LTT_KERNEL_CTL_H
19 #define _LTT_KERNEL_CTL_H
23 #include "trace-kernel.h"
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.
29 * This is NOT an upper bound because if the real event list size is bigger,
30 * dynamic reallocation is performed.
32 #define KERNEL_EVENT_INIT_LIST_SIZE 64
34 int kernel_add_channel_context(struct ltt_kernel_channel
*chan
,
35 struct ltt_kernel_context
*ctx
);
36 int kernel_create_session(struct ltt_session
*session
, int tracer_fd
);
37 int kernel_create_channel(struct ltt_kernel_session
*session
,
38 struct lttng_channel
*chan
);
39 int kernel_create_event(struct lttng_event
*ev
, struct ltt_kernel_channel
*channel
);
40 int kernel_disable_channel(struct ltt_kernel_channel
*chan
);
41 int kernel_disable_event(struct ltt_kernel_event
*event
);
42 int kernel_enable_event(struct ltt_kernel_event
*event
);
43 int kernel_enable_channel(struct ltt_kernel_channel
*chan
);
44 int kernel_enable_syscall(const char *syscall_name
,
45 struct ltt_kernel_channel
*channel
);
46 int kernel_disable_syscall(const char *syscall_name
,
47 struct ltt_kernel_channel
*channel
);
48 int kernel_open_metadata(struct ltt_kernel_session
*session
);
49 int kernel_open_metadata_stream(struct ltt_kernel_session
*session
);
50 int kernel_open_channel_stream(struct ltt_kernel_channel
*channel
);
51 int kernel_flush_buffer(struct ltt_kernel_channel
*channel
);
52 int kernel_metadata_flush_buffer(int fd
);
53 int kernel_start_session(struct ltt_kernel_session
*session
);
54 int kernel_stop_session(struct ltt_kernel_session
*session
);
55 ssize_t
kernel_list_events(int tracer_fd
, struct lttng_event
**event_list
);
56 void kernel_wait_quiescent(int fd
);
57 int kernel_calibrate(int fd
, struct lttng_kernel_calibrate
*calibrate
);
58 int kernel_validate_version(int tracer_fd
);
59 void kernel_destroy_session(struct ltt_kernel_session
*ksess
);
60 void kernel_destroy_channel(struct ltt_kernel_channel
*kchan
);
61 int kernel_snapshot_record(struct ltt_kernel_session
*ksess
,
62 struct snapshot_output
*output
, int wait
,
63 uint64_t nb_packets_per_stream
);
64 int kernel_syscall_mask(int chan_fd
, char **syscall_mask
, uint32_t *nr_bits
);
66 int init_kernel_workarounds(void);
68 #endif /* _LTT_KERNEL_CTL_H */
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