1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/* 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>
#include <asm/rqspinlock.h>
struct pcpu_freelist_head {
struct pcpu_freelist_node *first;
rqspinlock_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
|
