docs: tracing: Add stacktrace filter command

Add a description of stacktrace filter command. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
mariux64 · Aug 31, 2018 · 8a2933c · 8a2933c
1 parent ff7872e
commit 8a2933c
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst
@@ -2987,6 +2987,9 @@ The following commands are supported:
   command, it only prints out the contents of the ring buffer for the
   CPU that executed the function that triggered the dump.
 
+- stacktrace:
+  When the function is hit, a stack trace is recorded.
+
 trace_pipe
 ----------