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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
CPU that executed the function that triggered the dump.
- stacktrace:
When the function is hit, a stack trace is recorded.
trace_pipe
----------