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| author | Tejun Heo <tj@kernel.org> | 2014-11-22 09:32:08 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-11-22 09:32:08 -0500 |
| commit | cceb9bd63373061ad7b75c321808a2fb11c86545 (patch) | |
| tree | a70d939eabed2e19538707402441644dfc26990e /kernel/rcu/tree.c | |
| parent | 56e4dea81a55c338eede625f715c7fa21f1a28c4 (diff) | |
| parent | 8a84e01e147f44111988f9d8ccd2eaa30215a0f2 (diff) | |
| download | op-kernel-dev-cceb9bd63373061ad7b75c321808a2fb11c86545.zip op-kernel-dev-cceb9bd63373061ad7b75c321808a2fb11c86545.tar.gz | |
Merge branch 'master' into for-3.19
Pull in to receive 54ef6df3f3f1 ("rcu: Provide counterpart to
rcu_dereference() for non-RCU situations").
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 133e472..9815447 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3299,11 +3299,16 @@ static void _rcu_barrier(struct rcu_state *rsp) continue; rdp = per_cpu_ptr(rsp->rda, cpu); if (rcu_is_nocb_cpu(cpu)) { - _rcu_barrier_trace(rsp, "OnlineNoCB", cpu, - rsp->n_barrier_done); - atomic_inc(&rsp->barrier_cpu_count); - __call_rcu(&rdp->barrier_head, rcu_barrier_callback, - rsp, cpu, 0); + if (!rcu_nocb_cpu_needs_barrier(rsp, cpu)) { + _rcu_barrier_trace(rsp, "OfflineNoCB", cpu, + rsp->n_barrier_done); + } else { + _rcu_barrier_trace(rsp, "OnlineNoCB", cpu, + rsp->n_barrier_done); + atomic_inc(&rsp->barrier_cpu_count); + __call_rcu(&rdp->barrier_head, + rcu_barrier_callback, rsp, cpu, 0); + } } else if (ACCESS_ONCE(rdp->qlen)) { _rcu_barrier_trace(rsp, "OnlineQ", cpu, rsp->n_barrier_done); |
