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/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2016 Facebook
*/
#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_head extralist;
};
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
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