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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-05-28 23:57:46 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 12:33:21 -0700 |
| commit | 06668efa9180f4824fe846a8ff96338c18646bc7 (patch) | |
| tree | 2bda53825cb3437af82bc1db4a4114ee8e29e954 /kernel/rcutree.h | |
| parent | 037b64ed0bf2405a1a01542164d3418564b44fff (diff) | |
| download | linux-06668efa9180f4824fe846a8ff96338c18646bc7.tar.gz linux-06668efa9180f4824fe846a8ff96338c18646bc7.tar.bz2 linux-06668efa9180f4824fe846a8ff96338c18646bc7.zip | |
rcu: Move _rcu_barrier()'s rcu_head structures to rcu_data structures
In order for multiple flavors of RCU to each concurrently run one
rcu_barrier(), each flavor needs its own per-CPU set of rcu_head
structures. This commit therefore moves _rcu_barrier()'s set of
per-CPU rcu_head structures from per-CPU variables to the existing
per-CPU and per-RCU-flavor rcu_data structures.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.h')
| -rw-r--r-- | kernel/rcutree.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index 049896a835d9..586d93c978f2 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -314,6 +314,9 @@ struct rcu_data { unsigned long n_rp_need_fqs; unsigned long n_rp_need_nothing; + /* 6) _rcu_barrier() callback. */ + struct rcu_head barrier_head; + int cpu; struct rcu_state *rsp; }; |