rcu_prcess_callbacks() is the softirq handler for RCU which is raised from invoke_rcu_core() which is called from __call_rcu_core().
Each of these three functions checks if the cpu is online. We can remove the redundant ones. This commit removes one of these redundant check. Signed-off-by: Pranith Kumar <[email protected]> --- kernel/rcu/tree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 72e0b1f..044946e 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2563,8 +2563,6 @@ static void rcu_process_callbacks(struct softirq_action *unused) { struct rcu_state *rsp; - if (cpu_is_offline(smp_processor_id())) - return; trace_rcu_utilization(TPS("Start RCU core")); for_each_rcu_flavor(rsp) __rcu_process_callbacks(rsp); -- 2.0.0.rc2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
