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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>
hifive-unleashed-5.1
Masami Hiramatsu 2018-08-16 18:50:47 +09:00 committed by Jonathan Corbet
parent ff7872ef6f
commit 8a2933cfe7
1 changed files with 3 additions and 0 deletions
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Documentation/trace/ftrace.rst
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@ -2987,6 +2987,9 @@ The following commands are supported:
command, it only prints out the contents of the ring buffer for the command, it only prints out the contents of the ring buffer for the
CPU that executed the function that triggered the dump. CPU that executed the function that triggered the dump.
- stacktrace:
When the function is hit, a stack trace is recorded.
trace_pipe trace_pipe
---------- ----------