LXR linux/kernel/bpf/percpu

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/* Copyright (c) 2016 Facebook
   3 */
   4#ifndef __PERCPU_FREELIST_H__
   5#define __PERCPU_FREELIST_H__
   6#include <linux/spinlock.h>
   7#include <linux/percpu.h>
   8
   9struct pcpu_freelist_head {
  10        struct pcpu_freelist_node *first;
  11        raw_spinlock_t lock;
  12};
  13
  14struct pcpu_freelist {
  15        struct pcpu_freelist_head __percpu *freelist;
  16};
  17
  18struct pcpu_freelist_node {
  19        struct pcpu_freelist_node *next;
  20};
  21
  22/* pcpu_freelist_* do spin_lock_irqsave. */
  23void pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *);
  24struct pcpu_freelist_node *pcpu_freelist_pop(struct pcpu_freelist *);
  25/* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */
  26void __pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *);
  27struct pcpu_freelist_node *__pcpu_freelist_pop(struct pcpu_freelist *);
  28void pcpu_freelist_populate(struct pcpu_freelist *s, void *buf, u32 elem_size,
  29                            u32 nr_elems);
  30int pcpu_freelist_init(struct pcpu_freelist *);
  31void pcpu_freelist_destroy(struct pcpu_freelist *s);
  32#endif
  33