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Subject[PATCH v2 tip/core/rcu 28/39] srcu: Make num_rcu_lvl[] array be external
Date
This commit makes the num_rcu_lvl[] array external so that SRCU can
make use of it for initializing its upcoming srcu_node tree.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/rcu/rcu.h | 1 +
kernel/rcu/tree.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 5c1798ec32f7..4303b880ac99 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -195,6 +195,7 @@ extern void resched_cpu(int cpu);
#include <linux/rcu_node_tree.h>

extern int rcu_num_lvls;
+extern int num_rcu_lvl[];
extern int rcu_num_nodes;
static bool rcu_fanout_exact;
static int rcu_fanout_leaf;
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 21140192fd76..bef5765c3f68 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -123,7 +123,7 @@ static int rcu_fanout_leaf = RCU_FANOUT_LEAF;
module_param(rcu_fanout_leaf, int, 0444);
int rcu_num_lvls __read_mostly = RCU_NUM_LVLS;
/* Number of rcu_nodes at specified level. */
-static int num_rcu_lvl[] = NUM_RCU_LVL_INIT;
+int num_rcu_lvl[] = NUM_RCU_LVL_INIT;
int rcu_num_nodes __read_mostly = NUM_RCU_NODES; /* Total # rcu_nodes in use. */
/* panic() on RCU Stall sysctl. */
int sysctl_panic_on_rcu_stall __read_mostly;
--
2.5.2
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