1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
libtracecmd(3)
=============
NAME
----
tracecmd_set_loglevel - Set log level of the library
SYNOPSIS
--------
[verse]
--
*#include <trace-cmd.h>*
int *tracecmd_set_loglevel*(enum tep_loglevel _level_);
--
DESCRIPTION
-----------
The *tracecmd_set_loglevel()* function sets the level of the library logs that will be printed on
the console. See *libtraceevent(3)* for detailed desciription of the log levels. Setting the log
level to specific value means that logs from the previous levels will be printed too. For example
_TEP_LOG_WARNING_ will print any logs with severity _TEP_LOG_WARNING_, _TEP_LOG_ERROR_ and
_TEP_LOG_CRITICAL_. The default log level is _TEP_LOG_CRITICAL_. When a new level is set, it is
also propagated to the libtracefs and libtraceevent.
EXAMPLE
-------
[source,c]
--
#include <trace-cmd.h>
...
tracecmd_set_loglevel(TEP_LOG_ALL);
...
/* call libtracecmd, libtracefs or libtraceevent APIs and observe any logs they produce */
...
tracecmd_set_loglevel(TEP_LOG_CRITICAL);
--
FILES
-----
[verse]
--
*trace-cmd.h*
Header file to include in order to have access to the library APIs.
*-ltracecmd*
Linker switch to add when building a program that uses the library.
--
SEE ALSO
--------
*libtracefs(3)*,
*libtraceevent(3)*,
*trace-cmd(1)*
*trace-cmd.dat(5)*
AUTHOR
------
[verse]
--
*Steven Rostedt* <rostedt@goodmis.org>
*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>
--
REPORTING BUGS
--------------
Report bugs to <linux-trace-devel@vger.kernel.org>
LICENSE
-------
libtracecmd is Free Software licensed under the GNU LGPL 2.1
RESOURCES
---------
https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/
COPYING
-------
Copyright \(C) 2021 VMware, Inc. Free use of this software is granted under
the terms of the GNU Public License (GPL).
|
