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rcu: Remove redundant check of cpu_online()
Because invoke_cpu_core() checks whether the current CPU is online, there is no need for __call_rcu_core() to redundantly check it. There should not be any performance degradation because the called function is visible to the compiler. This commit therefore removes the redundant check. Signed-off-by: Yao Dongdong <yaodongdong@huawei.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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@ -2741,7 +2741,7 @@ static void __call_rcu_core(struct rcu_state *rsp, struct rcu_data *rdp,
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* If called from an extended quiescent state, invoke the RCU
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* core in order to force a re-evaluation of RCU's idleness.
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*/
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if (!rcu_is_watching() && cpu_online(smp_processor_id()))
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if (!rcu_is_watching())
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invoke_rcu_core();
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/* If interrupts were disabled or CPU offline, don't invoke RCU core. */
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