NAME

       tep_get_page_size, tep_set_page_size, tep_get_sub_buffer_size - Get / set the size of a
       memory page on the machine, where the trace is generated

SYNOPSIS

       #include <event-parse.h>

       int tep_get_page_size(struct tep_handle *tep);
       void tep_set_page_size(struct tep_handle *tep, int page_size);
       int tep_get_sub_buffer_size(struct tep_handle *tep);

DESCRIPTION

       The tep_get_page_size() function returns the size of a memory page on the machine, where
       the trace is generated. The tep argument is trace event parser context.

       The tep_set_page_size() function stores in the tep context the size of a memory page on
       the machine, where the trace is generated. The tep argument is trace event parser context.
       The page_size argument is the size of a memory page, in bytes.

       The tep_get_sub_buffer_size() returns the size of each "sub buffer" of the ring buffer.
       The Linux kernel ring buffer is broken up into sections called sub buffers. This returns
       the size of those buffers.

RETURN VALUE

       The tep_get_page_size() function returns size of the memory page, in bytes.

       The tep_get_sub_buffer_size() function returns the number of bytes each sub buffer is made
       up of.

EXAMPLE

           #include <unistd.h>
           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
                   int page_size = getpagesize();

                   tep_set_page_size(tep, page_size);

                   printf("The page size for this machine is %d\n", tep_get_page_size(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), trace-cmd(1)

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