[v4,31/46] tools/lib/traceevent: Man page for tep_filter_match()

Commit Message

Tzvetomir Stoyanov March 8, 2019, 1:36 p.m. UTC

Create man page for tep_filter_match()
as part of the libtraceevent APIs.

Signed-off-by: Tzvetomir Stoyanov <[e-mail]>
---
 .../libtraceevent-filter_match.txt            | 96 +++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt

Patch

diff --git a/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt b/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt
new file mode 100644
index 000000000000..af5e6d2a5986
--- /dev/null
+++ b/tools/lib/traceevent/Documentation/libtraceevent-filter_match.txt
@@ -0,0 +1,96 @@ 
+libtraceevent(3)
+================
+
+NAME
+----
+tep_filter_match - Tests if a record matches a filter.
+
+SYNOPSIS
+--------
+[verse]
+--
+*#include <event-parse.h>*
+
+enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_);
+--
+
+DESCRIPTION
+-----------
+The _tep_filter_match()_ function tests if a _record_ matches given _filter_.
+
+RETURN VALUE
+------------
+The _tep_filter_match()_ function returns _tep_errno_, according to the result:
+[verse]
+--
+_pass:[TEP_ERRNO__FILTER_MATCH]_	- filter found for event, the record matches.
+_pass:[TEP_ERRNO__FILTER_MISS]_		- filter found for event, the record does not match.
+_pass:[TEP_ERRNO__FILTER_NOT_FOUND]_	- no filter found for record's event.
+_pass:[TEP_ERRNO__NO_FILTER]_		- no rules in the filter.
+--
+or any other _tep_errno_, if an error occurred during the test.
+
+EXAMPLE
+-------
+[source,c]
+--
+#include <event-parse.h>
+...
+struct tep_handle *tep = tep_alloc();
+struct tep_event_filter *filter = tep_filter_alloc(tep);
+...
+void process_record(struct tep_record *record)
+{
+	switch (tep_filter_match(filter, record)) {
+	case TEP_ERRNO__FILTER_MATCH:
+		/* The filter matches the record */
+		break;
+	case TEP_ERRNO__FILTER_MISS:
+		/* The filter does not match the record */
+		break;
+	case TEP_ERRNO__FILTER_NOT_FOUND:
+		/* No filter found for record's event */
+		break;
+	case TEP_ERRNO__NO_FILTER:
+		/* There are no rules in the filter */
+		break
+	default:
+		/* An error occurred during the test */
+		break;
+	}
+}
+...
+--
+
+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* <[e-mail]>, author of *libtraceevent*.
+*Tzvetomir Stoyanov* <[e-mail]>, author of this man page.
+--
+REPORTING BUGS
+--------------
+Report bugs to  <[e-mail]>
+
+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