linux - kernel/bpf/percpu

34 lines · 1.1 KiB

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	#include <asm/rqspinlock.h>
9
10	struct pcpu_freelist_head {
11	struct pcpu_freelist_node *first;
12	rqspinlock_t lock;
13	};
14
15	struct pcpu_freelist {
16	struct pcpu_freelist_head __percpu *freelist;
17	struct pcpu_freelist_head extralist;
18	};
19
20	struct pcpu_freelist_node {
21	struct pcpu_freelist_node *next;
22	};
23
24	/* pcpu_freelist_* do spin_lock_irqsave. */
25	void pcpu_freelist_push(struct pcpu_freelist , struct pcpu_freelist_node );
26	struct pcpu_freelist_node pcpu_freelist_pop(struct pcpu_freelist );
27	/* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */
28	void __pcpu_freelist_push(struct pcpu_freelist , struct pcpu_freelist_node );
29	struct pcpu_freelist_node __pcpu_freelist_pop(struct pcpu_freelist );
30	void pcpu_freelist_populate(struct pcpu_freelist s, void buf, u32 elem_size,
31	u32 nr_elems);
32	int pcpu_freelist_init(struct pcpu_freelist *);
33	void pcpu_freelist_destroy(struct pcpu_freelist *s);
34	#endif