From ff015030c939f0bec68fa9b8898da3aaa7fe55ea Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 12 Jun 2012 13:16:58 -0700 Subject: [PATCH] rcu: RCU_SAVE_DYNTICK code no longer ever dead Before RCU had unified idle, the RCU_SAVE_DYNTICK leg of the switch statement in force_quiescent_state() was dead code for CONFIG_NO_HZ=n kernel builds. With unified idle, the code is never dead. This commit therefore removes the "if" statement designed to make gcc aware of when the code was and was not dead. Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett --- kernel/rcutree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/rcutree.c b/kernel/rcutree.c index b61c3ffc80e9..967b4bed2cf3 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1747,8 +1747,6 @@ static void force_quiescent_state(struct rcu_state *rsp, int relaxed) break; /* grace period idle or initializing, ignore. */ case RCU_SAVE_DYNTICK: - if (RCU_SIGNAL_INIT != RCU_SAVE_DYNTICK) - break; /* So gcc recognizes the dead code. */ raw_spin_unlock(&rnp->lock); /* irqs remain disabled */ -- 2.20.1