rcu: Remove rsp parameter from rcu_dump_cpu_stacks()

There now is only one rcu_state structure in a given build of the
Linux kernel, so there is no need to pass it as a parameter to RCU's
functions.  This commit therefore removes the rsp parameter from
rcu_dump_cpu_stacks().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 09f05083f01d15947f02cc3b4163391142d2a94d..3e252b80e0bfa8f29d2f4d48e016d55f97736c83 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -1270,13 +1270,13 @@ static void rcu_check_gp_kthread_starvation(void)
  * that don't support NMI-based stack dumps.  The NMI-triggered stack
  * traces are more accurate because they are printed by the target CPU.
  */
-static void rcu_dump_cpu_stacks(struct rcu_state *rsp)
+static void rcu_dump_cpu_stacks(void)
 {
        int cpu;
        unsigned long flags;
        struct rcu_node *rnp;
 
-       rcu_for_each_leaf_node(rsp, rnp) {
+       rcu_for_each_leaf_node(&rcu_state, rnp) {
                raw_spin_lock_irqsave_rcu_node(rnp, flags);
                for_each_leaf_node_possible_cpu(rnp, cpu)
                        if (rnp->qsmask & leaf_node_cpu_bit(rnp, cpu))
@@ -1355,7 +1355,7 @@ static void print_other_cpu_stall(struct rcu_state *rsp, unsigned long gp_seq)
               smp_processor_id(), (long)(jiffies - rsp->gp_start),
               (long)rcu_seq_current(&rsp->gp_seq), totqlen);
        if (ndetected) {
-               rcu_dump_cpu_stacks(rsp);
+               rcu_dump_cpu_stacks();
 
                /* Complain about tasks blocking the grace period. */
                rcu_print_detail_task_stall(rsp);
@@ -1418,7 +1418,7 @@ static void print_cpu_stall(struct rcu_state *rsp)
 
        rcu_check_gp_kthread_starvation();
 
-       rcu_dump_cpu_stacks(rsp);
+       rcu_dump_cpu_stacks();
 
        raw_spin_lock_irqsave_rcu_node(rnp, flags);
        /* Rewrite if needed in case of slow consoles. */