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rcu: Switch force_qs_rnp() to for_each_leaf_node_cpu_mask()
Currently, force_qs_rnp() uses a for_each_leaf_node_possible_cpu() loop containing a check of the current CPU's bit in ->qsmask. This works, but this commit saves three lines by instead using for_each_leaf_node_cpu_mask(), which combines the functionality of for_each_leaf_node_possible_cpu() and leaf_node_cpu_bit(). This commit also replaces the use of the local variable "bit" with rdp->grpmask. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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e1350e8e0e
commit
7441e7661d
1 changed files with 5 additions and 8 deletions
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@ -2298,14 +2298,11 @@ static void force_qs_rnp(int (*f)(struct rcu_data *rdp))
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raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
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continue;
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}
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for_each_leaf_node_possible_cpu(rnp, cpu) {
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unsigned long bit = leaf_node_cpu_bit(rnp, cpu);
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if ((rnp->qsmask & bit) != 0) {
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rdp = per_cpu_ptr(&rcu_data, cpu);
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if (f(rdp)) {
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mask |= bit;
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rcu_disable_urgency_upon_qs(rdp);
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}
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for_each_leaf_node_cpu_mask(rnp, cpu, rnp->qsmask) {
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rdp = per_cpu_ptr(&rcu_data, cpu);
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if (f(rdp)) {
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mask |= rdp->grpmask;
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rcu_disable_urgency_upon_qs(rdp);
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}
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}
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if (mask != 0) {
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