/* Copyright (c) 2016 Facebook * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ #ifndef __PERCPU_FREELIST_H__ #define __PERCPU_FREELIST_H__ #include <linux/spinlock.h> #include <linux/percpu.h> struct pcpu_freelist_head { struct pcpu_freelist_node *first; raw_spinlock_t lock; }; struct pcpu_freelist { struct pcpu_freelist_head __percpu *freelist; }; struct pcpu_freelist_node { struct pcpu_freelist_node *next; }; /* pcpu_freelist_* do spin_lock_irqsave. */ void pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); struct pcpu_freelist_node *pcpu_freelist_pop(struct pcpu_freelist *); /* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */ void __pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); struct pcpu_freelist_node *__pcpu_freelist_pop(struct pcpu_freelist *); void pcpu_freelist_populate(struct pcpu_freelist *s, void *buf, u32 elem_size, u32 nr_elems); int pcpu_freelist_init(struct pcpu_freelist *); void pcpu_freelist_destroy(struct pcpu_freelist *s); #endif