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rcu/nocb: Check rdp_gp->nocb_timer in __call_rcu_nocb_wake()
Currently, only rdp_gp->nocb_timer is used, for nocb_timer of no-rdp_gp structure, the timer_pending() is always return false, this commit therefore need to check rdp_gp->nocb_timer in __call_rcu_nocb_wake(). Signed-off-by: Zqiang <qiang.zhang1211@gmail.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
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@ -564,6 +564,7 @@ static void __call_rcu_nocb_wake(struct rcu_data *rdp, bool was_alldone,
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long lazy_len;
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long len;
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struct task_struct *t;
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struct rcu_data *rdp_gp = rdp->nocb_gp_rdp;
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// If we are being polled or there is no kthread, just leave.
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t = READ_ONCE(rdp->nocb_gp_kthread);
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@ -608,7 +609,7 @@ static void __call_rcu_nocb_wake(struct rcu_data *rdp, bool was_alldone,
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smp_mb(); /* Enqueue before timer_pending(). */
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if ((rdp->nocb_cb_sleep ||
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!rcu_segcblist_ready_cbs(&rdp->cblist)) &&
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!timer_pending(&rdp->nocb_timer)) {
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!timer_pending(&rdp_gp->nocb_timer)) {
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rcu_nocb_unlock(rdp);
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wake_nocb_gp_defer(rdp, RCU_NOCB_WAKE_FORCE,
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TPS("WakeOvfIsDeferred"));
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