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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-05-29 05:18:53 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 12:33:22 -0700 |
| commit | 7be7f0be907224445acc62b3884c892f38b7ff40 (patch) | |
| tree | 9802c524d04374e6a4e5c5b9d3a0d3c9085ef2fd /kernel/rcutree.h | |
| parent | 7db74df88b52844f4e966901e2972bba725e6766 (diff) | |
| download | linux-7be7f0be907224445acc62b3884c892f38b7ff40.tar.gz linux-7be7f0be907224445acc62b3884c892f38b7ff40.tar.bz2 linux-7be7f0be907224445acc62b3884c892f38b7ff40.zip | |
rcu: Move rcu_barrier_mutex to rcu_state structure
In order to allow each RCU flavor to concurrently execute its
rcu_barrier() function, it is necessary to move the relevant
state to the rcu_state structure. This commit therefore moves the
rcu_barrier_mutex global variable to a new ->barrier_mutex field
in the rcu_state structure.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutree.h')
| -rw-r--r-- | kernel/rcutree.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index d1ca4424122b..7641aec3e59c 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -400,6 +400,7 @@ struct rcu_state { struct task_struct *rcu_barrier_in_progress; /* Task doing rcu_barrier(), */ /* or NULL if no barrier. */ + struct mutex barrier_mutex; /* Guards barrier fields. */ atomic_t barrier_cpu_count; /* # CPUs waiting on. */ struct completion barrier_completion; /* Wake at barrier end. */ raw_spinlock_t fqslock; /* Only one task forcing */ |