[mirror_ubuntu-artful-kernel.git] / kernel / bpf / percpu_freelist.h

/* Copyright (c) 2016 Facebook
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#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_node {
	struct pcpu_freelist_node *next;
};

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
Commit	Line	Data
e19494ed AS	1	/* Copyright (c) 2016 Facebook
	2	*
	3	* This program is free software; you can redistribute it and/or
	4	* modify it under the terms of version 2 of the GNU General Public
	5	* License as published by the Free Software Foundation.
	6	*/
	7	#ifndef __PERCPU_FREELIST_H__
	8	#define __PERCPU_FREELIST_H__
	9	#include <linux/spinlock.h>
	10	#include <linux/percpu.h>
	11
	12	struct pcpu_freelist_head {
	13	struct pcpu_freelist_node *first;
	14	raw_spinlock_t lock;
	15	};
	16
	17	struct pcpu_freelist {
	18	struct pcpu_freelist_head __percpu *freelist;
	19	};
	20
	21	struct pcpu_freelist_node {
	22	struct pcpu_freelist_node *next;
	23	};
	24
	25	void pcpu_freelist_push(struct pcpu_freelist , struct pcpu_freelist_node );
	26	struct pcpu_freelist_node pcpu_freelist_pop(struct pcpu_freelist );
	27	void pcpu_freelist_populate(struct pcpu_freelist s, void buf, u32 elem_size,
	28	u32 nr_elems);
	29	int pcpu_freelist_init(struct pcpu_freelist *);
	30	void pcpu_freelist_destroy(struct pcpu_freelist *s);
	31	#endif