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| author | Ingo Molnar <mingo@kernel.org> | 2015-09-28 09:03:52 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-28 09:03:52 +0300 |
| commit | 7c4f1c694bf84eac538bee3e411aed10ae617d46 (patch) | |
| tree | d477facbaca91d72e4244d54f325286b13bcee11 /kernel | |
| parent | 9ffecb10283508260936b96022d4ee43a7798b4c (diff) | |
| parent | 19a5ecde086a6a5287978b12ae948fa691b197b7 (diff) | |
| download | linux-7c4f1c694bf84eac538bee3e411aed10ae617d46.tar.xz | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcu/tree.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 9f75f25cc5d9..775d36cc0050 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -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"); } /* |