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rcu/nocb: Rename __wake_nocb_leader() to __wake_nocb_gp()

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This commit adjusts naming to account for the new distinction between
callback and grace-period no-CBs kthreads.  While in the area, it also
updates local variables.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
This commit is contained in:
Paul E. McKenney 2019-03-31 16:11:57 -07:00
parent 5d62c08c5f
commit 5f675ba6eb
1 changed files with 9 additions and 9 deletions
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18
kernel/rcu/tree_plugin.h
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@ -1524,24 +1524,24 @@ bool rcu_is_nocb_cpu(int cpu)
* Kick the GP kthread for this NOCB group. Caller holds ->nocb_lock
* and this function releases it.
*/
static void __wake_nocb_leader(struct rcu_data *rdp, bool force,
unsigned long flags)
static void __wake_nocb_gp(struct rcu_data *rdp, bool force,
unsigned long flags)
__releases(rdp->nocb_lock)
{
struct rcu_data *rdp_leader = rdp->nocb_gp_rdp;
struct rcu_data *rdp_gp = rdp->nocb_gp_rdp;
lockdep_assert_held(&rdp->nocb_lock);
if (!READ_ONCE(rdp_leader->nocb_gp_kthread)) {
if (!READ_ONCE(rdp_gp->nocb_gp_kthread)) {
raw_spin_unlock_irqrestore(&rdp->nocb_lock, flags);
return;
}
if (rdp_leader->nocb_gp_sleep || force) {
if (rdp_gp->nocb_gp_sleep || force) {
/* Prior smp_mb__after_atomic() orders against prior enqueue. */
WRITE_ONCE(rdp_leader->nocb_gp_sleep, false);
WRITE_ONCE(rdp_gp->nocb_gp_sleep, false);
del_timer(&rdp->nocb_timer);
raw_spin_unlock_irqrestore(&rdp->nocb_lock, flags);
smp_mb(); /* ->nocb_gp_sleep before swake_up_one(). */
swake_up_one(&rdp_leader->nocb_gp_wq);
swake_up_one(&rdp_gp->nocb_gp_wq);
} else {
raw_spin_unlock_irqrestore(&rdp->nocb_lock, flags);
}
@ -1556,7 +1556,7 @@ static void wake_nocb_gp(struct rcu_data *rdp, bool force)
unsigned long flags;
raw_spin_lock_irqsave(&rdp->nocb_lock, flags);
__wake_nocb_leader(rdp, force, flags);
__wake_nocb_gp(rdp, force, flags);
}
/*
@ -1988,7 +1988,7 @@ static void do_nocb_deferred_wakeup_common(struct rcu_data *rdp)
}
ndw = READ_ONCE(rdp->nocb_defer_wakeup);
WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_NOT);
__wake_nocb_leader(rdp, ndw == RCU_NOCB_WAKE_FORCE, flags);
__wake_nocb_gp(rdp, ndw == RCU_NOCB_WAKE_FORCE, flags);
trace_rcu_nocb_wake(rcu_state.name, rdp->cpu, TPS("DeferredWake"));
}