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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-03-09 16:58:41 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 12:58:37 -0700 |
| commit | c5b5539506f86469dca08310657ca93bbb6c00a5 (patch) | |
| tree | 96b79812e7a7b35d8c4d06c518443c6a397712af | |
| parent | 0a0ba1c93f8a0ff28bacec0d1d018081e762e2f0 (diff) | |
| download | blackbird-op-linux-c5b5539506f86469dca08310657ca93bbb6c00a5.tar.gz blackbird-op-linux-c5b5539506f86469dca08310657ca93bbb6c00a5.zip | |
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@linux.vnet.ibm.com>
| -rw-r--r-- | kernel/rcu/tree.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index f2e888c8ec5a..e338a12c3a1b 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 || |
