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| author |   Jens Axboe <axboe@fb.com> | 2014-11-18 19:43:46 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-11-18 19:43:46 -0700 |
| commit | b3521729769ec71567a2e32a38609f87e781e41b (patch) | |
| tree | 66a8494968706420c3eb043caa5868702d440d18 /kernel/rcu/tree.c | |
| parent | NVMe: enable IO stats by default (diff) | |
| parent | Linux 3.18-rc5 (diff) | |
| download | linux-dev-b3521729769ec71567a2e32a38609f87e781e41b.tar.xz linux-dev-b3521729769ec71567a2e32a38609f87e781e41b.zip | |
Merge branch 'master' into for-3.19/drivers
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 133e47223095..9815447d22e0 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); |