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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-05-29 09:34:56 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 21:33:22 +0200 |
| commit | 24ebbca8ecdd5129d7f829a7cb5146aaeb531f77 (patch) | |
| tree | b7a4bb8044dcd1e13119113c77d2a4b96ba25a43 /kernel/rcutree.h | |
| parent | rcu: Move _rcu_barrier()'s rcu_head structures to rcu_data structures (diff) | |
| download | linux-24ebbca8ecdd5129d7f829a7cb5146aaeb531f77.tar.xz linux-24ebbca8ecdd5129d7f829a7cb5146aaeb531f77.zip | |
rcu: Move rcu_barrier_cpu_count 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_cpu_count global
variable to a new ->barrier_cpu_count 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>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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 586d93c978f2..c57ef0b7f097 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. */ + atomic_t barrier_cpu_count; /* # CPUs waiting on. */ raw_spinlock_t fqslock; /* Only one task forcing */ /* quiescent states. */ unsigned long jiffies_force_qs; /* Time at which to invoke */ |