rcu: Separately compile large rcu_segcblist functions

This commit creates a new kernel/rcu/rcu_segcblist.c file that
contains non-trivial segcblist functions.  Trivial functions
remain as static inline functions in kernel/rcu/rcu_segcblist.h

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 42a346b0df43..1d3475fc9496 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -573,6 +573,9 @@ config RCU_STALL_COMMON
           the tiny variants to disable RCU CPU stall warnings, while
           making these warnings mandatory for the tree variants.
 
+config RCU_NEED_SEGCBLIST
+        def_bool ( TREE_RCU || PREEMPT_RCU || TINY_SRCU || TREE_SRCU )
+
 config CONTEXT_TRACKING
        bool