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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>
This commit is contained in:
Paul E. McKenney 2018-07-03 17:22:34 -07:00
parent 8fd119b652
commit 33dbdbf025
1 changed files with 4 additions and 4 deletions
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8
kernel/rcu/tree.c
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@ -1270,13 +1270,13 @@ static void rcu_check_gp_kthread_starvation(void)
* that don't support NMI-based stack dumps. The NMI-triggered stack * that don't support NMI-based stack dumps. The NMI-triggered stack
* traces are more accurate because they are printed by the target CPU. * 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; int cpu;
unsigned long flags; unsigned long flags;
struct rcu_node *rnp; 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); raw_spin_lock_irqsave_rcu_node(rnp, flags);
for_each_leaf_node_possible_cpu(rnp, cpu) for_each_leaf_node_possible_cpu(rnp, cpu)
if (rnp->qsmask & leaf_node_cpu_bit(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), smp_processor_id(), (long)(jiffies - rsp->gp_start),
(long)rcu_seq_current(&rsp->gp_seq), totqlen); (long)rcu_seq_current(&rsp->gp_seq), totqlen);
if (ndetected) { if (ndetected) {
rcu_dump_cpu_stacks(rsp); rcu_dump_cpu_stacks();
/* Complain about tasks blocking the grace period. */ /* Complain about tasks blocking the grace period. */
rcu_print_detail_task_stall(rsp); 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_check_gp_kthread_starvation();
rcu_dump_cpu_stacks(rsp); rcu_dump_cpu_stacks();
raw_spin_lock_irqsave_rcu_node(rnp, flags); raw_spin_lock_irqsave_rcu_node(rnp, flags);
/* Rewrite if needed in case of slow consoles. */ /* Rewrite if needed in case of slow consoles. */