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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@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2015-09-29 15:29:21 -07:00
parent 886ef5a18a
commit 1307f21487
1 changed files with 15 additions and 17 deletions
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32
kernel/rcu/tree.c
View File

@ -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;
raw_spin_unlock_irqrestore(&rnp->lock, flags);
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;