[linux-2.6-block.git] / kernel / bpf / percpu_freelist.h

/* 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_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
Commit	Line	Data
25763b3c	1	/* SPDX-License-Identifier: GPL-2.0-only */
e19494ed	2	/* Copyright (c) 2016 Facebook
e19494ed AS	3	*/
	4	#ifndef __PERCPU_FREELIST_H__
	5	#define __PERCPU_FREELIST_H__
	6	#include <linux/spinlock.h>
	7	#include <linux/percpu.h>
	8
	9	struct pcpu_freelist_head {
	10	struct pcpu_freelist_node *first;
	11	raw_spinlock_t lock;
	12	};
	13
	14	struct pcpu_freelist {
	15	struct pcpu_freelist_head __percpu *freelist;
	16	};
	17
	18	struct pcpu_freelist_node {
	19	struct pcpu_freelist_node *next;
	20	};
	21
a89fac57	22	/* pcpu_freelist_* do spin_lock_irqsave. */
e19494ed AS	23	void pcpu_freelist_push(struct pcpu_freelist , struct pcpu_freelist_node );
e19494ed AS	24	struct pcpu_freelist_node pcpu_freelist_pop(struct pcpu_freelist );
a89fac57 AS	25	/* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */
	26	void __pcpu_freelist_push(struct pcpu_freelist , struct pcpu_freelist_node );
	27	struct pcpu_freelist_node __pcpu_freelist_pop(struct pcpu_freelist );
e19494ed AS	28	void pcpu_freelist_populate(struct pcpu_freelist s, void buf, u32 elem_size,
	29	u32 nr_elems);
	30	int pcpu_freelist_init(struct pcpu_freelist *);
	31	void pcpu_freelist_destroy(struct pcpu_freelist *s);
	32	#endif