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docs: fix wrong proftool usage

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Guide shows incorrect usage of proftool, which is confusing. If proftool
is used w/o '-o' argument it complains like following

$ ./sandbox/tools/proftool -m sandbox/System.map -t trace dump-ftrace > trace.dat
Must provide trace data, System.map file and output file
Usage: proftool [-cmtv] <cmd> <profdata>

s/>/-o/ fixes it and proftool outputs decoded data to trace.dat

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Pavel Skripkin 2023-04-12 22:05:31 +03:00 committed by Heinrich Schuchardt
parent 962424a873
commit d53b2cfe08
1 changed files with 1 additions and 1 deletions
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doc/develop/trace.rst
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@ -100,7 +100,7 @@ Then run proftool to convert the trace information to ftrace format
.. code-block:: console
$ ./sandbox/tools/proftool -m sandbox/System.map -t trace dump-ftrace >trace.dat
$ ./sandbox/tools/proftool -m sandbox/System.map -t trace dump-ftrace -o trace.dat
Finally run kernelshark to display it (note it only works with `.dat` files!):