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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
	Clark Williams <williams@redhat.com>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	Tzvetomir Stoyanov <tstoyanov@vmware.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jiri Olsa <jolsa@redhat.com>,
	linux-trace-devel@vger.kernel.org,
	Steven Rostedt <rostedt@goodmis.org>,
	Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 40/73] tools lib traceevent: Man page for tep_read_number_field()
Date: Fri, 17 May 2019 16:35:38 -0300
Message-ID: <20190517193611.4974-41-acme@kernel.org> (raw)
In-Reply-To: <20190517193611.4974-1-acme@kernel.org>

From: Tzvetomir Stoyanov <tstoyanov@vmware.com>

Create man page for libtraceevent API tep_read_number_field().

Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-21-tstoyanov@vmware.com
Link: http://lkml.kernel.org/r/20190510200109.219394901@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 .../libtraceevent-field_read.txt              | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-field_read.txt

diff --git a/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt b/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt
new file mode 100644
index 000000000000..64e9e25d3fd9
--- /dev/null
+++ b/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt
@@ -0,0 +1,81 @@
+libtraceevent(3)
+================
+
+NAME
+----
+tep_read_number_field - Reads a number from raw data.
+
+SYNOPSIS
+--------
+[verse]
+--
+*#include <event-parse.h>*
+
+int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_);
+--
+
+DESCRIPTION
+-----------
+The _tep_read_number_field()_ function reads the value of the _field_ from the
+raw _data_ and stores it in the _value_. The function sets the _value_ according
+to the endianness of the raw data and the current machine and stores it in
+_value_.
+
+RETURN VALUE
+------------
+The _tep_read_number_field()_ function retunrs 0 in case of success, or -1 in
+case of an error.
+
+EXAMPLE
+-------
+[source,c]
+--
+#include <event-parse.h>
+...
+struct tep_handle *tep = tep_alloc();
+...
+struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start");
+...
+void process_record(struct tep_record *record)
+{
+	unsigned long long pid;
+	struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid");
+
+	if (tep_read_number_field(field_pid, record->data, &pid) != 0) {
+		/* Failed to get "common_pid" value */
+	}
+}
+...
+--
+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@goodmis.org>, author of *libtraceevent*.
+*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
+--
+REPORTING BUGS
+--------------
+Report bugs to  <linux-trace-devel@vger.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
-- 
2.20.1


  parent reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190517193611.4974-1-acme@kernel.org>
2019-05-17 19:35 ` [PATCH 21/73] tools lib traceevent: Introduce man pages Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 22/73] tools lib traceevent: Add support for man pages with multiple names Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 23/73] tools lib traceevent: Man pages for tep_handler related APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 24/73] tools lib traceevent: Man page for header_page APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 25/73] tools lib traceevent: Man page for get/set cpus APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 26/73] tools lib traceevent: Man page for file endian APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 27/73] tools lib traceevent: Man page for host " Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 28/73] tools lib traceevent: Man page for page size APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 29/73] tools lib traceevent: Man page for tep_strerror() Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 30/73] tools lib traceevent: Man pages for event handler APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 31/73] tools lib traceevent: Man pages for function related libtraceevent APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 32/73] tools lib traceevent: Man pages for registering print function Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 33/73] tools lib traceevent: Man page for tep_read_number() Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 34/73] tools lib traceevent: Man pages for event find APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 35/73] tools lib traceevent: Man page for list events APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 36/73] tools lib traceevent: Man pages for libtraceevent event get APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 37/73] tools lib traceevent: Man pages for find field APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 38/73] tools lib traceevent: Man pages for get field value APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 39/73] tools lib traceevent: Man pages for print field APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` Arnaldo Carvalho de Melo [this message]
2019-05-17 19:35 ` [PATCH 41/73] tools lib traceevent: Man pages for event fields APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 42/73] tools lib traceevent: Man pages for event filter APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 43/73] tools lib traceevent: Man pages for parse event APIs Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 44/73] tools lib traceevent: Man page for tep_parse_header_page() Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 45/73] tools lib traceevent: Man pages for APIs used to extract common fields from a record Arnaldo Carvalho de Melo
2019-05-17 19:35 ` [PATCH 46/73] tools lib traceevent: Man pages for trace sequences APIs Arnaldo Carvalho de Melo

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