Clarify README about the GNU gold linker requirement
[lttng-tools.git] / src / bin / lttng-sessiond / kernel.h
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
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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.
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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
d14d33bf 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
12 *
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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.
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16 */
17
18#ifndef _LTT_KERNEL_CTL_H
19#define _LTT_KERNEL_CTL_H
20
8c0faa1d 21#include "session.h"
62499ad6 22#include "trace-kernel.h"
f34daff7 23
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24/*
25 * Default size for the event list when kernel_list_events is called. This size
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26 * value is based on the initial LTTng 2.0 version set of tracepoints.
27 *
28 * This is NOT an upper bound because if the real event list size is bigger,
29 * dynamic reallocation is performed.
2ef84c95 30 */
6725fe19 31#define KERNEL_EVENT_INIT_LIST_SIZE 64
2ef84c95 32
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33int kernel_add_channel_context(struct ltt_kernel_channel *chan,
34 struct lttng_kernel_context *ctx);
8c0faa1d 35int kernel_create_session(struct ltt_session *session, int tracer_fd);
b082db07 36int kernel_create_channel(struct ltt_kernel_session *session,
fdd9eb17 37 struct lttng_channel *chan);
19e70852 38int kernel_create_event(struct lttng_event *ev, struct ltt_kernel_channel *channel);
26cc6b4e 39int kernel_disable_channel(struct ltt_kernel_channel *chan);
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40int kernel_disable_event(struct ltt_kernel_event *event);
41int kernel_enable_event(struct ltt_kernel_event *event);
d36b8583 42int kernel_enable_channel(struct ltt_kernel_channel *chan);
a4b92340 43int kernel_open_metadata(struct ltt_kernel_session *session);
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44int kernel_open_metadata_stream(struct ltt_kernel_session *session);
45int kernel_open_channel_stream(struct ltt_kernel_channel *channel);
46int kernel_flush_buffer(struct ltt_kernel_channel *channel);
47int kernel_metadata_flush_buffer(int fd);
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48int kernel_start_session(struct ltt_kernel_session *session);
49int kernel_stop_session(struct ltt_kernel_session *session);
9f19cc17 50ssize_t kernel_list_events(int tracer_fd, struct lttng_event **event_list);
f3ed775e 51void kernel_wait_quiescent(int fd);
d0254c7c 52int kernel_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
096102bd 53int kernel_validate_version(int tracer_fd);
2f77fc4b 54void kernel_destroy_session(struct ltt_kernel_session *ksess);
fb5f35b6 55void kernel_destroy_channel(struct ltt_kernel_channel *kchan);
20fe2104 56
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57int init_kernel_workarounds(void);
58
20fe2104 59#endif /* _LTT_KERNEL_CTL_H */
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