ftrace/documentation: Fix RST C code blocks (3a37b918) · Commits · 戴 / test

Some C code in the ftrace-users.rst document is missing RST C block annotation, which has to be added. Link: https://lore.kernel.org/r/20201116173502.392a769c@canb.auug.org.au Acked-by:

Documentation/trace/ftrace-uses.rst

+6 −0

Original line number	Diff line number	Diff line
		@@ -116,6 +116,8 @@ called by a callback may also be traced, and call that same callback,
		recursion protection must be used. There are two helper functions that
		can help in this regard. If you start your code with:

		.. code-block:: c

		int bit;

		bit = ftrace_test_recursion_trylock(ip, parent_ip);
		@@ -124,6 +126,8 @@ can help in this regard. If you start your code with:

		and end it with:

		.. code-block:: c

		ftrace_test_recursion_unlock(bit);

		The code in between will be safe to use, even if it ends up calling a
		@@ -145,6 +149,8 @@ protection, it is best to make sure that RCU is "watching", otherwise
		that data or critical section will not be protected as expected. In this
		case add:

		.. code-block:: c

		if (!rcu_is_watching())
		return;