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authorPaul E. McKenney <paulmck@kernel.org>2023-03-20 03:29:20 +0300
committerPaul E. McKenney <paulmck@kernel.org>2023-04-04 18:34:47 +0300
commit2b4be54830681cc023877d3b33a9b7ae9122e551 (patch)
treef181c0d5b2d3ed87844e993d00cee40aa8550114 /kernel/rcu/tasks.h
parentfe15c26ee26efa11741a7b632e9f23b01aca4cc6 (diff)
downloadlinux-2b4be54830681cc023877d3b33a9b7ae9122e551.tar.xz
rcu-tasks: Fix warning for unused tasks_rcu_exit_srcu
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>
Diffstat (limited to 'kernel/rcu/tasks.h')
-rw-r--r--kernel/rcu/tasks.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index bfb5e1549f2b..185358c2f08d 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -136,8 +136,10 @@ static struct rcu_tasks rt_name = \
.kname = #rt_name, \
}
+#ifdef CONFIG_TASKS_RCU
/* Track exiting tasks in order to allow them to be waited for. */
DEFINE_STATIC_SRCU(tasks_rcu_exit_srcu);
+#endif
/* Avoid IPIing CPUs early in the grace period. */
#define RCU_TASK_IPI_DELAY (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB) ? HZ / 2 : 0)