Set default number of metadata subbuffers to 2
[lttng-tools.git] / include / lttng-share.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
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6 * as published by the Free Software Foundation; only version 2
7 * of the License.
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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 _LTTNG_SHARE_H
20#define _LTTNG_SHARE_H
21
62d3069f 22#include <asm/types.h>
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23#include <stdint.h>
24
25typedef uint32_t u32;
26typedef uint64_t u64;
27
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28typedef __s64 s64;
29
f3ed775e 30/* Default channel attributes */
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31#define DEFAULT_CHANNEL_NAME "channel0"
32#define DEFAULT_CHANNEL_OVERWRITE 0 /* usec */
7d452e12 33/* DEFAULT_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
b389abbe 34#define DEFAULT_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
7d452e12 35/* DEFAULT_CHANNEL_SUBBUF_NUM must always be a power of 2 */
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36#define DEFAULT_CHANNEL_SUBBUF_NUM 8
37#define DEFAULT_CHANNEL_SWITCH_TIMER 0 /* usec */
38#define DEFAULT_CHANNEL_READ_TIMER 200 /* usec */
39#define DEFAULT_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
40
41#define DEFAULT_METADATA_SUBBUF_SIZE 4096
91c06b6f 42#define DEFAULT_METADATA_SUBBUF_NUM 2
e6ddca71 43
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44/* Kernel has different defaults */
45
46/* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
47#define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE 262144 /* bytes */
48/* DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2 */
49#define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM 4
50/* See lttng-kernel.h enum lttng_kernel_output for channel output */
51#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_EVENT_SPLICE
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52
53/*
54 * lttng user-space instrumentation type
55 */
56enum lttng_ust_instrumentation {
57 LTTNG_UST_TRACEPOINT,
58 LTTNG_UST_MARKER,
59};
60
9bda164d 61#endif /* _LTTNG_SHARE_H */
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