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    Subject[PATCH v3 tip/core/rcu 28/40] 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 9397a6693d70..346948b51b0b 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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