Create a man page for tep_get_header_page_size(),
as part of the libtraceevent API.
Signed-off-by: Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx>
---
.../libtraceevent-header_size.txt | 73 +++++++++++++++++++
tools/lib/traceevent/event-parse-api.c | 4 +-
2 files changed, 75 insertions(+), 2 deletions(-)
create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-header_size.txt
diff --git a/tools/lib/traceevent/Documentation/libtraceevent-header_size.txt b/tools/lib/traceevent/Documentation/libtraceevent-header_size.txt
new file mode 100644
index 000000000000..8edf49d2a709
--- /dev/null
+++ b/tools/lib/traceevent/Documentation/libtraceevent-header_size.txt
@@ -0,0 +1,73 @@
+libtraceevent(3)
+================
+
+NAME
+----
+tep_get_header_page_size - Get the size of a long integer, in kernel context.
+
+SYNOPSIS
+--------
+[verse]
+--
+*#include <event-parse.h>*
+
+int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_);
+
+--
+DESCRIPTION
+-----------
+The _tep_get_header_page_size()_ function returns the size of a long integer,
+in kernel context. The _tep_ argument is trace event parser context.
+This information is retrieved from /sys/kernel/debug/tracing/events/header_page,
+ "commit" field.
+
+RETURN VALUE
+------------
+The _tep_get_header_page_size()_ function returns the size of a long integer,
+in bytes
+
+EXAMPLE
+-------
+[source,c]
+--
+#include <event-parse.h>
+...
+struct tep_handle *tep = tep_alloc();
+...
+ int lsize = tep_get_header_page_size(tep);
+ printf ("The size of a long in kernel context is %d bytes", lsize);
+...
+--
+
+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* <rostedt@xxxxxxxxxxx>, author of *libtraceevent*.
+*Tzvetomir Stoyanov* <tz.stoyanov@xxxxxxxxx>, author of this man page.
+--
+REPORTING BUGS
+--------------
+Report bugs to <linux-trace-devel@xxxxxxxxxxxxxxx>
+
+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
diff --git a/tools/lib/traceevent/event-parse-api.c b/tools/lib/traceevent/event-parse-api.c
index c0bbd7864f53..9137862261a5 100644
--- a/tools/lib/traceevent/event-parse-api.c
+++ b/tools/lib/traceevent/event-parse-api.c
@@ -100,10 +100,10 @@ tep_data2host8(struct tep_handle *pevent, unsigned long long data)
}
/**
- * tep_get_header_page_size - get size of the header page
+ * tep_get_header_page_size - get the size of a long integer, in kernel context
* @pevent: a handle to the tep_handle
*
- * This returns size of the header page
+ * This returns the size of a long integer, in kernel context
* If @pevent is NULL, 0 is returned.
*/
int tep_get_header_page_size(struct tep_handle *pevent)
--
2.17.2
|