linux-kernel - [PATCH 10/11] ftrace: add doc for new option record-funcproto

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Message-Id: <20190825132330.5015-11-changbin.du@gmail.com>
Date:   Sun, 25 Aug 2019 21:23:29 +0800
From:   Changbin Du <changbin.du@...il.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>
Cc:     Jonathan Corbet <corbet@....net>, Jessica Yu <jeyu@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-kbuild@...r.kernel.org,
        Changbin Du <changbin.du@...il.com>
Subject: [PATCH 10/11] ftrace: add doc for new option record-funcproto

Just add the doc for our new feature.

Signed-off-by: Changbin Du <changbin.du@...il.com>
---
 Documentation/trace/ftrace.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst
index f60079259669..c68fbbedb8bd 100644
--- a/Documentation/trace/ftrace.rst
+++ b/Documentation/trace/ftrace.rst
@@ -988,6 +988,7 @@ To see what is available, simply cat the file::
 	nolatency-format
 	record-cmd
 	norecord-tgid
+	norecord-funcproto
 	overwrite
 	nodisable_on_free
 	irq-info
@@ -1131,6 +1132,11 @@ Here are the available options:
 	mapped Thread Group IDs (TGID) mapping to pids. See
 	"saved_tgids".
 
+  record-funcproto
+	Record function parameters and return value. This option
+	is only supported by function_graph tracer on x86_64
+	platform by now.
+
   overwrite
 	This controls what happens when the trace buffer is
 	full. If "1" (default), the oldest events are
-- 
2.20.1