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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-10-08 10:54:03 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-11-08 11:50:11 -0800 |
| commit | 7b2e6011f150c42235c4a541d20cf6891afe878a (patch) | |
| tree | a02ac239103e97847ec29183d8aaa45c385a3335 /kernel/rcutree.h | |
| parent | 489832609a1ad7189d11715d8cefb457d90182c5 (diff) | |
| download | lwn-7b2e6011f150c42235c4a541d20cf6891afe878a.tar.gz lwn-7b2e6011f150c42235c4a541d20cf6891afe878a.zip | |
rcu: Rename ->onofflock to ->orphan_lock
The ->onofflock field in the rcu_state structure at one time synchronized
CPU-hotplug operations for RCU. However, its scope has decreased over time
so that it now only protects the lists of orphaned RCU callbacks. This
commit therefore renames it to ->orphan_lock to reflect its current use.
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 | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index a240f032848e..a7c945d149cf 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -383,9 +383,8 @@ struct rcu_state { /* End of fields guarded by root rcu_node's lock. */ - raw_spinlock_t onofflock ____cacheline_internodealigned_in_smp; - /* exclude on/offline and */ - /* starting new GP. */ + raw_spinlock_t orphan_lock ____cacheline_internodealigned_in_smp; + /* Protect following fields. */ struct rcu_head *orphan_nxtlist; /* Orphaned callbacks that */ /* need a grace period. */ struct rcu_head **orphan_nxttail; /* Tail of above. */ @@ -394,7 +393,7 @@ struct rcu_state { struct rcu_head **orphan_donetail; /* Tail of above. */ long qlen_lazy; /* Number of lazy callbacks. */ long qlen; /* Total number of callbacks. */ - /* End of fields guarded by onofflock. */ + /* End of fields guarded by orphan_lock. */ struct mutex onoff_mutex; /* Coordinate hotplug & GPs. */ |