diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-03-13 16:48:18 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-04-18 11:38:20 -0700 |
| commit | 8660b7d8a545227fd9ee80508aa82528ea9947d7 (patch) | |
| tree | 1273afef9df0e3f06a43ef79c9ff142894a1874e /kernel/rcu/rcu.h | |
| parent | ac367c1c621b75689f6d5cd8301d364ba2c9f292 (diff) | |
srcu: Use rcu_segcblist to track SRCU callbacks
This commit switches SRCU from custom-built callback queues to the new
rcu_segcblist structure. This change associates grace-period sequence
numbers with groups of callbacks, which will be needed for efficient
processing of per-CPU callbacks.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/rcu.h')
| -rw-r--r-- | kernel/rcu/rcu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index 0bc1313c49e2..a943b42a9cf7 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -87,6 +87,12 @@ static inline unsigned long rcu_seq_snap(unsigned long *sp) return s; } +/* Return the current value the update side's sequence number, no ordering. */ +static inline unsigned long rcu_seq_current(unsigned long *sp) +{ + return READ_ONCE(*sp); +} + /* * Given a snapshot from rcu_seq_snap(), determine whether or not a * full update-side operation has occurred. |