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Message-Id: <20200929173646.252163-1-tz.stoyanov@gmail.com>
Date: Tue, 29 Sep 2020 20:36:46 +0300
From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@...il.com>
To: arnaldo.melo@...il.com
Cc: rostedt@...dmis.org, linux-trace-devel@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] tools lib traceevent: Man page libtraceevent debug APIs
Add a new libtraceevent man page with documentation of these debug APIs:
tep_print_printk
tep_print_funcs
tep_set_test_filters
tep_plugin_print_options
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@...il.com>
---
.../Documentation/libtraceevent-debug.txt | 95 +++++++++++++++++++
1 file changed, 95 insertions(+)
create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-debug.txt
diff --git a/tools/lib/traceevent/Documentation/libtraceevent-debug.txt b/tools/lib/traceevent/Documentation/libtraceevent-debug.txt
new file mode 100644
index 000000000000..9a2d1ffa2d72
--- /dev/null
+++ b/tools/lib/traceevent/Documentation/libtraceevent-debug.txt
@@ -0,0 +1,95 @@
+libtraceevent(3)
+================
+
+NAME
+----
+tep_print_printk, tep_print_funcs, tep_set_test_filters, tep_plugin_print_options -
+Print libtraceevent internal information.
+
+SYNOPSIS
+--------
+[verse]
+--
+*#include <event-parse.h>*
+*#include <trace-seq.h>*
+
+void *tep_print_printk*(struct tep_handle pass:[*]tep);
+void *tep_print_funcs*(struct tep_handle pass:[*]tep);
+void *tep_set_test_filters*(struct tep_handle pass:[*]tep, int test_filters);
+void *tep_plugin_print_options*(struct trace_seq pass:[*]s);
+--
+
+DESCRIPTION
+-----------
+The _tep_print_printk()_ function prints the printk string formats that were
+stored for this tracing session. The _tep_ argument is trace event parser context.
+
+The _tep_print_funcs()_ function prints the stored function name to address mapping
+for this tracing session. The _tep_ argument is trace event parser context.
+
+The _tep_set_test_filters()_ function sets a flag to test a filter string. If this
+flag is set, when _tep_filter_add_filter_str()_ API as called, it will print the filter
+string instead of adding it. The _tep_ argument is trace event parser context.
+The _test_filters_ argument is the test flag that will be set.
+
+The _tep_plugin_print_options()_ function writes a list of the registered plugin options
+into _s_.
+
+EXAMPLE
+-------
+[source,c]
+--
+#include <event-parse.h>
+#include <trace-seq.h>
+...
+struct tep_handle *tep = tep_alloc();
+...
+ tep_print_printk(tep);
+...
+ tep_print_funcs(tep);
+...
+struct tep_event_filter *filter = tep_filter_alloc(tep);
+ tep_set_test_filters(tep, 1);
+ tep_filter_add_filter_str(filter, "sche d/sched_wakeup:target_cpu==1");
+ tep_set_test_filters(tep, 0);
+ tep_filter_free(filter);
+...
+struct trace_seq seq;
+trace_seq_init(&seq);
+
+ tep_plugin_print_options(&s);
+...
+--
+
+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@...dmis.org>, author of *libtraceevent*.
+*Tzvetomir Stoyanov* <tz.stoyanov@...il.com>, author of this man page.
+--
+REPORTING BUGS
+--------------
+Report bugs to <linux-trace-devel@...r.kernel.org>
+
+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
--
2.26.2
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