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/Linux-v4.19/kernel/bpf/
Dcpumap.c407 struct bpf_cpu_map_entry *old_rcpu; in __cpu_map_entry_replace() local
409 old_rcpu = xchg(&cmap->cpu_map[key_cpu], rcpu); in __cpu_map_entry_replace()
410 if (old_rcpu) { in __cpu_map_entry_replace()
411 call_rcu(&old_rcpu->rcu, __cpu_map_entry_free); in __cpu_map_entry_replace()
412 INIT_WORK(&old_rcpu->kthread_stop_wq, cpu_map_kthread_stop); in __cpu_map_entry_replace()
413 schedule_work(&old_rcpu->kthread_stop_wq); in __cpu_map_entry_replace()