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Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent

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Pull RCU fixes from Paul E. McKenney, for two regressions
introduced in this merge window:

  - Fix bug with recent GCCs.
  - Fix false positive lockdep splat.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2015-09-28 08:03:52 +02:00
parent 9ffecb1028 19a5ecde08
commit 7c4f1c694b
2 changed files with 10 additions and 6 deletions
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kernel/rcu/tree.c
+5
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@@ -3868,6 +3868,7 @@ static void rcu_init_new_rnp(struct rcu_node *rnp_leaf)
static void __init
rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
{
static struct lock_class_key rcu_exp_sched_rdp_class;
unsigned long flags;
struct rcu_data *rdp = per_cpu_ptr(rsp->rda, cpu);
struct rcu_node *rnp = rcu_get_root(rsp);
@@ -3883,6 +3884,10 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
mutex_init(&rdp->exp_funnel_mutex);
rcu_boot_init_nocb_percpu_data(rdp);
raw_spin_unlock_irqrestore(&rnp->lock, flags);
if (rsp == &rcu_sched_state)
lockdep_set_class_and_name(&rdp->exp_funnel_mutex,
&rcu_exp_sched_rdp_class,
"rcu_data_exp_sched");
}
/*