/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2016 Facebook
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*/
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#ifndef __PERCPU_FREELIST_H__
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#define __PERCPU_FREELIST_H__
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#include <linux/spinlock.h>
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#include <linux/percpu.h>
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struct pcpu_freelist_head {
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struct pcpu_freelist_node *first;
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raw_spinlock_t lock;
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};
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struct pcpu_freelist {
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struct pcpu_freelist_head __percpu *freelist;
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struct pcpu_freelist_head extralist;
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};
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struct pcpu_freelist_node {
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struct pcpu_freelist_node *next;
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};
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/* pcpu_freelist_* do spin_lock_irqsave. */
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void pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *);
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struct pcpu_freelist_node *pcpu_freelist_pop(struct pcpu_freelist *);
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/* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */
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void __pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *);
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struct pcpu_freelist_node *__pcpu_freelist_pop(struct pcpu_freelist *);
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void pcpu_freelist_populate(struct pcpu_freelist *s, void *buf, u32 elem_size,
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u32 nr_elems);
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int pcpu_freelist_init(struct pcpu_freelist *);
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void pcpu_freelist_destroy(struct pcpu_freelist *s);
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#endif
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