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[RFC,1/8] rcu: Remove superfluous rdp fetch

Message ID 20210109020536.127953-2-frederic@kernel.org
State New
Headers show
Series rcu/sched: Fix ignored rescheduling after rcu_eqs_enter() v3 | expand

Commit Message

Frederic Weisbecker Jan. 9, 2021, 2:05 a.m. UTC 
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar<mingo@kernel.org>
---
 kernel/rcu/tree.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 40e5e3dd253e..fef90c467670 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -643,7 +643,6 @@  static noinstr void rcu_eqs_enter(bool user)
 	instrumentation_begin();
 	trace_rcu_dyntick(TPS("Start"), rdp->dynticks_nesting, 0, atomic_read(&rdp->dynticks));
 	WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !user && !is_idle_task(current));
-	rdp = this_cpu_ptr(&rcu_data);
 	do_nocb_deferred_wakeup(rdp);
 	rcu_prepare_for_idle();
 	rcu_preempt_deferred_qs(current);