diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2025-01-09 19:52:15 +0300 |
|---|---|---|
| committer | Boqun Feng <boqun.feng@gmail.com> | 2025-02-05 08:50:06 +0300 |
| commit | 73298c7cf1b901809d2a7f3636e4635839ff8033 (patch) | |
| tree | 54a0b987cdc9b43d48c1d201921bf4459214e7b2 /include | |
| parent | 81a208c56ef6a07cfde338603e891cc647b73d21 (diff) | |
| download | linux-73298c7cf1b901809d2a7f3636e4635839ff8033.tar.xz | |
rcu: Remove references to old grace-period-wait primitives
The rcu_barrier_sched(), synchronize_sched(), and synchronize_rcu_bh()
RCU API members have been gone for many years. This commit therefore
removes non-historical instances of them.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rcupdate.h | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 48e5c03df1dd..3bb554723074 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -806,11 +806,9 @@ do { \ * sections, invocation of the corresponding RCU callback is deferred * until after the all the other CPUs exit their critical sections. * - * In v5.0 and later kernels, synchronize_rcu() and call_rcu() also - * wait for regions of code with preemption disabled, including regions of - * code with interrupts or softirqs disabled. In pre-v5.0 kernels, which - * define synchronize_sched(), only code enclosed within rcu_read_lock() - * and rcu_read_unlock() are guaranteed to be waited for. + * Both synchronize_rcu() and call_rcu() also wait for regions of code + * with preemption disabled, including regions of code with interrupts or + * softirqs disabled. * * Note, however, that RCU callbacks are permitted to run concurrently * with new RCU read-side critical sections. One way that this can happen @@ -865,11 +863,10 @@ static __always_inline void rcu_read_lock(void) * rcu_read_unlock() - marks the end of an RCU read-side critical section. * * In almost all situations, rcu_read_unlock() is immune from deadlock. - * In recent kernels that have consolidated synchronize_sched() and - * synchronize_rcu_bh() into synchronize_rcu(), this deadlock immunity - * also extends to the scheduler's runqueue and priority-inheritance - * spinlocks, courtesy of the quiescent-state deferral that is carried - * out when rcu_read_unlock() is invoked with interrupts disabled. + * This deadlock immunity also extends to the scheduler's runqueue + * and priority-inheritance spinlocks, courtesy of the quiescent-state + * deferral that is carried out when rcu_read_unlock() is invoked with + * interrupts disabled. * * See rcu_read_lock() for more information. */ |