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The tasks_rcu_exit_srcu variable is used only by kernels built with CONFIG_TASKS_RCU=y, but is defined for all kernesl with CONFIG_TASKS_RCU_GENERIC=y. Therefore, in kernels built with CONFIG_TASKS_RCU_GENERIC=y but CONFIG_TASKS_RCU=n, this gives a "defined but not used" warning. This commit therefore moves this variable under CONFIG_TASKS_RCU. Link: https://lore.kernel.org/oe-kbuild-all/202303191536.XzMSyzTl-lkp@intel.com/ Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.