tep_parse_event - Man Page

Parse the event format information


#include <event-parse.h>

enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf, unsigned long size, const char *sys);
enum tep_errno tep_parse_format(struct tep_handle *tep, struct tep_event **eventp, const char *buf, unsigned long size, const char *sys);


The tep_parse_event() function parses the event format and creates an event structure to quickly parse raw data for a given event. The tep argument is the trace event parser context. The created event structure is stored in the tep context. The buf argument is a buffer with size, where the event format data is. The event format data can be taken from tracefs/events/.../.../format files. The sys argument is the system of the event.

The tep_parse_format() function does the same as tep_parse_event(). The only difference is in the extra eventp argument, where the newly created event structure is returned.

Return Value

Both tep_parse_event() and tep_parse_format() functions return 0 on success, or TEP_ERRNO__... in case of an error.


#include <event-parse.h>
struct tep_handle *tep = tep_alloc();
char *buf;
int size;
struct tep_event *event = NULL;
buf = read_file("/sys/kernel/tracing/events/ftrace/print/format", &size);
if (tep_parse_event(tep, buf, size, "ftrace") != 0) {
        /* Failed to parse the ftrace print format */

if (tep_parse_format(tep, &event, buf, size, "ftrace") != 0) {
        /* Failed to parse the ftrace print format */


        Header file to include in order to have access to the library APIs.
        Linker switch to add when building a program that uses the library.

See Also

libtraceevent(3), trace-cmd(1)


Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.

Reporting Bugs

Report bugs to <linux-trace-devel@vger.kernel.org[3]>


libtraceevent is Free Software licensed under the GNU LGPL 2.1




  1. rostedt@goodmis.org
  2. tz.stoyanov@gmail.com
  3. linux-trace-devel@vger.kernel.org

Referenced By

The man page tep_parse_format(3) is an alias of tep_parse_event(3).

07/22/2021 libtraceevent 1.2.1 libtraceevent Manual