Commit-ID: c5b5539506f86469dca08310657ca93bbb6c00a5
Gitweb: http://git.kernel.org/tip/c5b5539506f86469dca08310657ca93bbb6c00a5
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 9 Mar 2015 16:58:41 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Wed, 27 May 2015 12:58:37 -0700
rcu: Remove dead code from force_qs_rnp()
Because force_qs_rnp() is invoked only from the force-quiescent-state
code which runs only in the context of the grace-period kthread, a grace
period must always be in progress throughout force_qs_rnp()'s execution.
This commit therefore removes the rcu_gp_in_progress() check and the
associated dead code.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index f2e888c..e338a12 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2720,10 +2720,6 @@ static void force_qs_rnp(struct rcu_state *rsp,
mask = 0;
raw_spin_lock_irqsave(&rnp->lock, flags);
smp_mb__after_unlock_lock();
- if (!rcu_gp_in_progress(rsp)) {
- raw_spin_unlock_irqrestore(&rnp->lock, flags);
- return;
- }
if (rnp->qsmask == 0) {
if (rcu_state_p == &rcu_sched_state ||
rsp != rcu_state_p ||
--
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