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tep_get_cpus(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | FILES | SEE ALSO | AUTHOR | REPORTING BUGS | LICENSE | RESOURCES | NOTES | COLOPHON 

LIBTRACEEVENT(3)           libtraceevent Manual          LIBTRACEEVENT(3)

NAME         top

       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         top

       #include <event-parse.h>

       int tep_get_cpus(struct tep_handle *tep);
       void tep_set_cpus(struct tep_handle *tep, int cpus);

DESCRIPTION         top

       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         top

       The tep_get_cpus() functions returns the number of CPUs, which
       have tracing data recorded.

EXAMPLE         top

           #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         top

           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         top

       libtraceevent(3), trace-cmd(1)

AUTHOR         top

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

REPORTING BUGS         top

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

LICENSE         top

       libtraceevent is Free Software licensed under the GNU LGPL 2.1

RESOURCES         top

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

NOTES         top

        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

COLOPHON         top

       This page is part of the libtraceevent (Linux kernel trace event
       library) project.  Information about the project can be found at
       ⟨https://www.trace-cmd.org/⟩.  If you have a bug report for this
       manual page, see ⟨https://www.trace-cmd.org/⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git⟩
       on 2025-08-11.  (At that time, the date of the most recent commit
       that was found in the repository was 2025-05-30.)  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a
       mail to man-pages@man7.org

libtraceevent 1.7.3             09/24/2023               LIBTRACEEVENT(3)

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