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rcu/nocb: Rename nocb_gp_update_state to nocb_gp_update_state_deoffloading

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The name nocb_gp_update_state() is unenlightening, so this commit changes
it to nocb_gp_update_state_deoffloading().  This function now does what
its name says, updates state and returns true if the CPU corresponding to
the specified rcu_data structure is in the process of being de-offloaded.

Reported-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Neeraj Upadhyay <neeraju@codeaurora.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Frederic Weisbecker 2021-01-28 18:12:13 +01:00 committed by Paul E. McKenney
parent ec711bc12c
commit 55adc3e1c8
1 changed files with 5 additions and 4 deletions
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9
kernel/rcu/tree_plugin.h
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@ -2016,7 +2016,8 @@ static inline bool nocb_gp_enabled_cb(struct rcu_data *rdp)
return rcu_segcblist_test_flags(&rdp->cblist, flags);
}
static inline bool nocb_gp_update_state(struct rcu_data *rdp, bool *needwake_state)
static inline bool nocb_gp_update_state_deoffloading(struct rcu_data *rdp,
bool *needwake_state)
{
struct rcu_segcblist *cblist = &rdp->cblist;
@ -2026,7 +2027,7 @@ static inline bool nocb_gp_update_state(struct rcu_data *rdp, bool *needwake_sta
if (rcu_segcblist_test_flags(cblist, SEGCBLIST_KTHREAD_CB))
*needwake_state = true;
}
return true;
return false;
}
/*
@ -2037,7 +2038,7 @@ static inline bool nocb_gp_update_state(struct rcu_data *rdp, bool *needwake_sta
rcu_segcblist_clear_flags(cblist, SEGCBLIST_KTHREAD_GP);
if (!rcu_segcblist_test_flags(cblist, SEGCBLIST_KTHREAD_CB))
*needwake_state = true;
return false;
return true;
}
@ -2075,7 +2076,7 @@ static void nocb_gp_wait(struct rcu_data *my_rdp)
continue;
trace_rcu_nocb_wake(rcu_state.name, rdp->cpu, TPS("Check"));
rcu_nocb_lock_irqsave(rdp, flags);
if (!nocb_gp_update_state(rdp, &needwake_state)) {
if (nocb_gp_update_state_deoffloading(rdp, &needwake_state)) {
rcu_nocb_unlock_irqrestore(rdp, flags);
if (needwake_state)
swake_up_one(&rdp->nocb_state_wq);