Commit-ID: 1307f2148719cc9e9d12f5fa7d5b3b61ec5aef72
Gitweb: http://git.kernel.org/tip/1307f2148719cc9e9d12f5fa7d5b3b61ec5aef72
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Tue, 29 Sep 2015 15:29:21 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Fri, 4 Dec 2015 12:26:51 -0800
rcu: Invert sync_rcu_exp_select_cpus() "if" statement
This commit saves a couple lines of code and reduces indentation
by inverting the sense of an "if" statement in the function
sync_rcu_exp_select_cpus().
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 30 ++++++++++++++----------------
1 file changed, 14 insertions(+), 16 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index a4a0475..00f07d6 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3716,24 +3716,22 @@ retry_ipi:
ret = smp_call_function_single(cpu, func, rsp, 0);
if (!ret) {
mask_ofl_ipi &= ~mask;
- } else {
- /* Failed, raced with offline. */
- raw_spin_lock_irqsave_rcu_node(rnp, flags);
- if (cpu_online(cpu) &&
- (rnp->expmask & mask)) {
- raw_spin_unlock_irqrestore(&rnp->lock,
- flags);
- schedule_timeout_uninterruptible(1);
- if (cpu_online(cpu) &&
- (rnp->expmask & mask))
- goto retry_ipi;
- raw_spin_lock_irqsave_rcu_node(rnp,
- flags);
- }
- if (!(rnp->expmask & mask))
- mask_ofl_ipi &= ~mask;
+ continue;
+ }
+ /* Failed, raced with offline. */
+ raw_spin_lock_irqsave_rcu_node(rnp, flags);
+ if (cpu_online(cpu) &&
+ (rnp->expmask & mask)) {
raw_spin_unlock_irqrestore(&rnp->lock, flags);
+ schedule_timeout_uninterruptible(1);
+ if (cpu_online(cpu) &&
+ (rnp->expmask & mask))
+ goto retry_ipi;
+ raw_spin_lock_irqsave_rcu_node(rnp, flags);
}
+ if (!(rnp->expmask & mask))
+ mask_ofl_ipi &= ~mask;
+ raw_spin_unlock_irqrestore(&rnp->lock, flags);
}
/* Report quiescent states for those that went offline. */
mask_ofl_test |= mask_ofl_ipi;
--
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