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rcu: Shrink each possible cpu krcp
CPUs can go offline shortly after kfree_call_rcu() has been invoked, which can leave memory stranded until those CPUs come back online. This commit therefore drains the kcrp of each CPU, not just the ones that happen to be online. Acked-by: Joel Fernandes <joel@joelfernandes.org> Signed-off-by: Zqiang <qiang.zhang@windriver.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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parent
53922270d2
commit
70060b8770
1 changed files with 3 additions and 3 deletions
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@ -3450,7 +3450,7 @@ kfree_rcu_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
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unsigned long count = 0;
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/* Snapshot count of all CPUs */
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for_each_online_cpu(cpu) {
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for_each_possible_cpu(cpu) {
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struct kfree_rcu_cpu *krcp = per_cpu_ptr(&krc, cpu);
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count += READ_ONCE(krcp->count);
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@ -3465,7 +3465,7 @@ kfree_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
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int cpu, freed = 0;
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unsigned long flags;
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for_each_online_cpu(cpu) {
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for_each_possible_cpu(cpu) {
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int count;
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struct kfree_rcu_cpu *krcp = per_cpu_ptr(&krc, cpu);
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@ -3498,7 +3498,7 @@ void __init kfree_rcu_scheduler_running(void)
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int cpu;
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unsigned long flags;
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for_each_online_cpu(cpu) {
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for_each_possible_cpu(cpu) {
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struct kfree_rcu_cpu *krcp = per_cpu_ptr(&krc, cpu);
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raw_spin_lock_irqsave(&krcp->lock, flags);
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