---
name: "tep_get_cpus"
section: "3"
platform: "linux"
package: "libtraceevent"
version: "1:1.9.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/tep_get_cpus"
---

# tep\_get\_cpus(3)

Get / set the number of CPUs, which have a tracing buffer representing it. Note, the buffer may be empty.

## NAME

tep\_get\_cpus, tep\_set\_cpus - Get / set the number of CPUs, which have a tracing buffer representing it. Note, the buffer may be empty.

## SYNOPSIS

```
#include <event-parse.h>
int tep_get_cpus(struct tep_handle *tep);
void tep_set_cpus(struct tep_handle *tep, int cpus);
```

## DESCRIPTION

The **tep\_get\_cpus()** function gets the number of CPUs, which have a tracing buffer representing it. The *tep* argument is trace event parser context.

The **tep\_set\_cpus()** function sets the number of CPUs, which have a tracing buffer representing it. The *tep* argument is trace event parser context. The *cpu* argument is the number of CPUs with tracing data.

## RETURN VALUE

The **tep\_get\_cpus()** functions returns the number of CPUs, which have tracing data recorded.

## EXAMPLE

```
#include <event-parse.h>
...
struct tep_handle *tep = tep_alloc();
...
        tep_set_cpus(tep, 5);
...
        printf("We have tracing data for %d CPUs", tep_get_cpus(tep));
```

## FILES

```
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)](/libtraceevent/3.md), [**trace-cmd**(1)](/trace-cmd/1.md)

## AUTHOR

```
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**\[3\]\>

## LICENSE

libtraceevent is Free Software licensed under the GNU LGPL 2.1

## RESOURCES

**https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/**

## NOTES

- 1\.

  rostedt@goodmis.org

  mailto:rostedt@goodmis.org

- 2\.

  tz.stoyanov@gmail.com

  mailto:tz.stoyanov@gmail.com

- 3\.

  linux-trace-devel@vger.kernel.org

  mailto:linux-trace-devel@vger.kernel.org