[PATCH] docs: fix wrong proftool usage
Pavel Skripkin
paskripkin at gmail.com
Wed Apr 12 21:05:31 CEST 2023
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 at gmail.com>
---
doc/develop/trace.rst | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/doc/develop/trace.rst b/doc/develop/trace.rst
index 8425d843e9..9bbe1345d2 100644
--- a/doc/develop/trace.rst
+++ b/doc/develop/trace.rst
@@ -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!):
--
2.39.2
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