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rcu: Remove superfluous rdp fetch 

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>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Frederic Weisbecker 2021-01-06 23:07:15 +01:00 committed by Paul E. McKenney
parent a38fd87484
commit d3ad5bbc4d
1 changed files with 0 additions and 1 deletions
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1
kernel/rcu/tree.c
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@ -648,7 +648,6 @@ static noinstr void rcu_eqs_enter(bool user)
instrumentation_begin(); instrumentation_begin();
trace_rcu_dyntick(TPS("Start"), rdp->dynticks_nesting, 0, atomic_read(&rdp->dynticks)); 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)); WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !user && !is_idle_task(current));
rdp = this_cpu_ptr(&rcu_data);
rcu_prepare_for_idle(); rcu_prepare_for_idle();
rcu_preempt_deferred_qs(current); rcu_preempt_deferred_qs(current);