e64392019c
Create man pages for libtraceevent APIs: tep_event_common_fields(), tep_event_fields() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-22-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.421670142@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
106 lines
2.3 KiB
Plaintext
106 lines
2.3 KiB
Plaintext
libtraceevent(3)
|
|
================
|
|
|
|
NAME
|
|
----
|
|
tep_event_common_fields, tep_event_fields - Get a list of fields for an event.
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
--
|
|
*#include <event-parse.h>*
|
|
|
|
struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_);
|
|
struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_);
|
|
--
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
The _tep_event_common_fields()_ function returns an array of pointers to common
|
|
fields for the _event_. The array is allocated in the function and must be freed
|
|
by free(). The last element of the array is NULL.
|
|
|
|
The _tep_event_fields()_ function returns an array of pointers to event specific
|
|
fields for the _event_. The array is allocated in the function and must be freed
|
|
by free(). The last element of the array is NULL.
|
|
|
|
RETURN VALUE
|
|
------------
|
|
Both _tep_event_common_fields()_ and _tep_event_fields()_ functions return
|
|
an array of pointers to tep_format_field structures in case of success, or
|
|
NULL in case of an error.
|
|
|
|
EXAMPLE
|
|
-------
|
|
[source,c]
|
|
--
|
|
#include <event-parse.h>
|
|
...
|
|
struct tep_handle *tep = tep_alloc();
|
|
...
|
|
int i;
|
|
struct tep_format_field **fields;
|
|
struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
|
|
if (event != NULL) {
|
|
fields = tep_event_common_fields(event);
|
|
if (fields != NULL) {
|
|
i = 0;
|
|
while (fields[i]) {
|
|
/*
|
|
walk through the list of the common fields
|
|
of the kvm_exit event
|
|
*/
|
|
i++;
|
|
}
|
|
free(fields);
|
|
}
|
|
fields = tep_event_fields(event);
|
|
if (fields != NULL) {
|
|
i = 0;
|
|
while (fields[i]) {
|
|
/*
|
|
walk through the list of the event specific
|
|
fields of the kvm_exit event
|
|
*/
|
|
i++;
|
|
}
|
|
free(fields);
|
|
}
|
|
}
|
|
...
|
|
--
|
|
|
|
FILES
|
|
-----
|
|
[verse]
|
|
--
|
|
*event-parse.h*
|
|
Header file to include in order to have access to the library APIs.
|
|
*-ltraceevent*
|
|
Linker switch to add when building a program that uses the library.
|
|
--
|
|
|
|
SEE ALSO
|
|
--------
|
|
_libtraceevent(3)_, _trace-cmd(1)_
|
|
|
|
AUTHOR
|
|
------
|
|
[verse]
|
|
--
|
|
*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
|
|
*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
|
|
--
|
|
REPORTING BUGS
|
|
--------------
|
|
Report bugs to <linux-trace-devel@vger.kernel.org>
|
|
|
|
LICENSE
|
|
-------
|
|
libtraceevent is Free Software licensed under the GNU LGPL 2.1
|
|
|
|
RESOURCES
|
|
---------
|
|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
|